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LIU Xuefeng, LI Xiaomei, ZHANG Guowu, ZHANG Peijian, LIU Guo, HUANG Min, CHEN Yinxia
2022,30(5):613-622, DOI: 10.11926/jtsb.4517
Abstract:
In order to understand the genetic diversity of Jacaranda mimosifolia germplasm resources, 168 germplasms of Jacaranda mimosifolia were restriction-site associated DNA sequencing (RAD-seq), and then the phylogenetic tree was constructed, principal component (PCA), population structure and genetic diversity were analyzed. The results showed that the mean alignment rates to the reference genomes were 81.02% with an average sequencing depth of 23.18×. After cleaned and filtered, a total of 45 552 SNPs were obtained. All tested germplasms could be clustered into two groups, those from Sichuan-Chongqing region were in one group, and the rest were in another group. Jacaranda mimosifolia has a high genetic diversity at the SNP level. Among them, nucleotide diversity (π) and expected heterozygosity (He) in YNKM population is the largest, showing the highest genetic diversity. Therefore, Jacaranda mimosifolia from Sichuan-Chongqing region showed relatively close genetic relationship, suggesting that they might from the same ancestor, and those from other regions might be randomly introduced and cultivated.
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LAI Chengchun, ZHANG Fumin, LAI Gongti, PAN Hong, ZHANG Jing, PAN Ruo, QUE Qiuxia, HUANG Xiangui, FAN Lihua
2022,30(5):623-635, DOI: 10.11926/jtsb.4566
Abstract:
To reveal the effects of shoot pinching on the growth, sucrose and starch metabolism in ‘Kyoho’ grape (Vitis vinifera×V. labrusca) and its mechanism, the phenotype of leaves and stems, accumulation characteristics of soluble solids, sucrose and starch in fruits, and expression of genes related to sucrose and starch metabolism were studied by different ways of shoot pinching. The results showed that shoot pinching inhibited leaf growth and stem enlargement of ‘Kyoho’, but promoted the rapid growth of inflorescence in early stage, and increasing fruit weight, ear weight, plant yield and soluble solid content. The contents of sucrose in leaves, sucrose and starch in stems increased in late stage under 2-leaf pinching, and the expression of SPS, NI and CWI in sucrose metabolism enhanced, while that of AMY in starch metabolism inhibited. Therefore, it was suggested that 2-leaf pinching could regulate the expression of SPS, NI, CWI and AMY genes, and promoted sucrose synthesis and starch accumulation, laying a nutritional foundation for fruit ripening, germination and flowering.
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JIANG Huawu, WU Pingzhi, YANG Tianshun, LI Jiating, GAO Jingyang, CHEN Honghua, WANG Xirui, CHEN Yaping, LI Meiru, WU Guojiang
2022,30(5):636-644, DOI: 10.11926/jtsb.4510
Abstract:
Tiger nut (Cyperus esculentus) originated from the Mediterranean Coast in North Africa. It is a special oil crop that stores oil in tuber tissues. In order to popularize the cultivation of tiger nut, it is urgent to study the basic biological characteristics of cultivated tiger nut lines in China. Therefore, the germplasm lines from the main planting areas of tiger nut in China were collected. After field planting, some characters of tuber and plant and their correlation among lines were compared and analyzed. According to tuber size and tuber shape, these cultivated tiger nut lines could be divided into three basic types, namely long tuber, big tuber and round tuber. Under the field planting conditions, the flowering rates of each lines ware very few, and there was no significant difference in the number of tuber buds and tuber rings among these lines. However, these three types of tiger nut have great differences in oil content, leaf and plant morphology, and tillering characters. The leaf length-width ratio was significantly positively correlated with the tuber height-width ratio, but the correlation between leaf morphology and tuber oil content was not significant. These would provide important reference for field planting and variety breeding of tiger nuts.
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LIN Qingxia, YANG Junguo, WANG Lili, SONG Zhenshuo, CHEN Lin
2022,30(5):645-654, DOI: 10.11926/jtsb.4514
Abstract:
In order to investigate the effects of different membrane separation processes on product quality, biochemical components and antioxidant activity in vitro, the water extract of Oolong tea was separated by ceramic membrane (500 nm) and ultrafiltration membrane (20, 10, 5, 3.5 kD), and tea powder was prepared by spray drying. The quality of tea powder prepared by different membrane separation processes was evaluated through sensory quality and physical properties, and the main biochemical components of tea powder were analyzed and compared. Meanwhile, the antioxidant activity of tea powder in vitro was evaluated by DPPH radical scavenging capacity, the ferric ion reducing antioxidant power (FRAP), hydroxyl radical scavenging capacity and anti- superoxide anion activity. The results showed that the sensory quality and antioxidant activity of ceramic membrane were the highest. The 500 nm ceramic membrane can effectively separate and enrich tea polyphenols (TPs), free amino acids (FAAs), caffeine (CAF), soluble sugar (SPS) and other substances, but also achieve the effect of impurity removal. The water extract of Oolong tea separated by ceramic membrane and then separated by ultrafiltration membrane, TPs, CAF, SPS, catechin components have no separation and enrichment effect. Ultra- filtration membranes with molecular weight less than 10 kDa can effectively separate and enrich free amino acids. The 500 nm ceramic membrane interception solution had the highest SPS content, but the worst sensory quality and the lowest antioxidant activity. Therefore, considering the three factors of quality, efficiency and energy saving, the comprehensive quality of tea powder prepared by 500 nm ceramic membrane through liquid is the best.
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XU Haiyan, WANG Shan, PENG Xiujuan, CHEN Yanbin, HOU Minna, LIU Yanhong, WANG Qing, LIU Feng
2022,30(5):655-662, DOI: 10.11926/jtsb.4515
Abstract:
In order to understand the changes of polysaccharide content in Gentiana apiata before and after flowering, the extraction process of polysaccharides was optimized by response surface method, and the antioxidant activities of polysaccharides were determined. The results showed that the content of polysaccharide in G. apiata after flowering was higher than that before flowering. The optimal extraction process were extraction 3 h, the solid-liquid ratio of 1∶16, the alcohol precipitation ratio of 1∶10, and the centrifugal speed at 1 537×g. Under optimal extraction conditions, the extraction rate of polysaccharide was 5.13%, close to the predicted value of 5.42%. Polysaccharides had certain antioxidant capacity to DPPH and ABTS, which was higher than that of Vitamin C and butylated hydroxytoluene. Therefore, it was suggested that G. apiatacan also could be used as antioxidant in food and health care products except for medicine.
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LI Chengxun, XU Xiaoyu, LI Aiping, ZHENG Kaibin
2022,30(5):663-675, DOI: 10.11926/jtsb.4596
Abstract:
In order to clarify the pharmacodynamic basis of water extract from Vicia faba flowers, the chemical constituents were analyzed and identified by ultra performance liquid chromatography electrospray ion source quadrupole time of flight mass spectrometry (UPLC-ESI-QTOF-MS), and the antioxidant activity was determined. The results showed that 178 components were identified from the water extract, and the relative contents of 107 components were more than 0.01%. The components with higher relative content included scutellarein 7-neohesperidoside, indoxyl glucuronide, spirolide E, rutin, propylene glycol alginate, kaempferol 3-α-d- galactoside, xanthurenic acid, and so on. The main components of flower water extract were flavonoids and alkaloids, with 16 and 19 kinds, and their relative contents were 36.53% and 34.33%, respectively. The IC50 of flower water extract for scavenging DPPH and ABTS+ free radical was 26.5 and 25.0 µg/mL, respectively. Therefore, flavonoids and alkaloids were the main substance basis of V. faba flower, and the water extract had strong antioxidant activity, indicating V. faba flowers had high application value.
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YIN Hongxiang, ZHANG Kaiyuan, REN Zixuan, ZHAO Jiawen, JIANG Guihua, CHEN Rong
2022,30(5):676-686, DOI: 10.11926/jtsb.4494
Abstract:
In order to understand the correlation between characters of single nucleotide polymorphism (SNP) of internal transcribed spacer (ITS) sequences and composition of steroidal saponins of Paris polyphylla var. yunnanensis, the effect of SNP on the quality stability of medicinal materials, the ITS sequences of 37 samples were compared by MegAlign, and then classified according to SNP loci. In addition, 7 steroidal saponins (polyphyllin Ⅰ, Ⅱ, Ⅴ, Ⅵ, Ⅶ, H, dioscin) in samples were determined by HPLC-DAD. The steroidal saponin composition characteristics of each genotype were statistical analysis by SPSS 25.0 & SIMCA-P 15.0. The results showed that there were 40 double-allelic polymorphic sites in ITS sequences of P. polyphylla var. yunnanensis, including 32 base conversion sites and 8 base inversion sites. According to SNP characteristics, 37 samples were divided into two genotypes: YN-I and YN-II. Six kinds of steroidal saponins (polyphyllin Ⅰ, Ⅱ, Ⅵ, Ⅶ, H, dioscin) were widely distributed in samples, while polyphyllin Ⅴ was relatively rare. The mean total content of pharmacopoeia index components in YN-I and YN-II were 1.070% and 0.93%, which the sample pass rate were 68.42% and 77.78%, respectively. The mean total content of 7 steroidal saponins were 1.65% and 1.32%, respectively. ANOVA analysis showed that there was significant differentiation of steroidal saponins profile between two genotypes, while there was no significant difference in the index components of pharmacopoeia, so the medicinal value of two genotypes should be equivalent. Cluster analysis (CA) and principal component analysis (PCA) showed the dispersion of YN-I was higher than that of YN-II, indicating the quality of medicinal materials of YN-II was more stable and the individual differences in steroidal saponins synthesis and accumulation in YN-II was smaller than YN-I. Therefore, the SNP characteristics of YN-II were of great significance for the screen of molecular genetic markers in the breeding of Paris polyphylla var. yunnanensis.
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YU Zhicheng, HE Xuejiao, LIN Xiuxiang, CHEN Zhendong, ZOU Longyun
2022,30(5):687-696, DOI: 10.11926/jtsb.4534
Abstract:
In order to clarify the pigment composition and color mechanism of petals of Melastoma, the anthocyanins in 5 species were determined, the structure and distribution of petal epidermal cells were observed, and the influence of pH value, soluble sugar and soluble protein content on flower color was analyzed. The results showed that the petals of Melastoma had not chlorophyll and carotenoid, violet color mainly contained anthocyanin and flavonoids, and flavonoids in white color. The anthocyanins distributed in upper and lower epidermis of M. candidum and M. sanguinrum petals, and aslo in palisade tissue of M. malabathiricum, but the petals of M. candidum f. albiflorum and M. malabathricum var. alba had no pigment accumulation. The cells in upper epidermis of violet Melastoma show conical protrusions, which in white Melastoma show irregular flat shape, and those in lower epidermis of both colors show irregular flat shape. The brightness (L*) of flower color decreased with the deepening of petal color, which was negatively correlated with the redness (a*) and positively with the blueness (b*). The anthocyanin content had significantly negative correlation with L* and b*, and as well as pH and a*. Therefore, anthocyanin was the main determinant of flower color in genus Melastoma, anthocyanin content, pigment distribution and shape of upper epidermis cells were the main factors that cause color diversity.
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HUANG Yan, PANG Xingchen, CHEN Jingfeng, WANG Lihui, WU Yongbin
2022,30(5):697-707, DOI: 10.11926/jtsb.4524
Abstract:
In order to understand the main factors of soil affecting wetland plant diversity, 18 sample plots were selected from 9 wetland types in Guangfo area. The wetland community species composition, plant diversity and soil factors were studied through field work and laboratory experiment. Furthermore, the correlations among community distribution, plant diversity and soil factors were analyzed by variance, canonical redundancy analysis (RDA) and canonical correspondence analysis (CCA). The results showed that there were 312 wetland species, belonging to 90 families and 198 genera, with Gramineae, Cyperaceae and Compositae as the dominant families. In addition, herbs are the most abundant in wetland plants, accounting for 79.17%. The principal component analysis showed that the level of soil nutrients in offshore and coastal wetlands was high. Moreover, the RDA analysis showed that soil factors with a great impact on plant diversity were soil organic matter, total nitrogen, total phosphorus, total potassium and alkali hydrolyzable nitrogen. From CCA, the main influencing factors of soil environmental factors on wetland herb community distribution are pH, available potassiumand available phosphorus. In conclusion, wetland ecosystem was more complex and fragile than terrestrial ecosystem, and the relationship between plant community and soil environmental factors was also more complex. The species distribution pattern, community diversity, community structure, soil conditions and their relationship of wetland vegetation are more obviously affected by the human disturbance.
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WANG Xu, LIU Jingkun, LUO Shuixing, ZHAO Kunkun, LI Xinjian
2022,30(5):708-717, DOI: 10.11926/jtsb.4519
Abstract:
Leaf functional traits are closely related to plant growth strategies and resource utilization ability. In order to explore the adaptation strategies of psammophytes to environment in Hainan Island, the leaf functional traits of Vitex trifolia, Clerodendrum inerme, Lantana camara, Eupatorium odoratum, Stachytarpheta jamaicensis and Ipomoea pes-caprae and their relationships with soil chemical properties were analyzed. The results showed that the leaf functional traits of tropical psammophytes were different among species, which were affected not only by species but also by soil factors. The specific leaf area of species were in the order of herb>shrub>vine. The N/P ratio of leaves ranged from 7.78 to 10.85, suggesting that the growth of tropical psammophytes was restricted by soil N. The variation coefficient of Na content in leaves was the highest, ranging from 18.46% to 76.36%, indicating that species had a great difference in the absorption of Na+, which would affect its natural distribution in coastal sandy land. The specific leaf area, leaf dry matter content had negative correlations with K and Na contents in leaves, as well as N/P ratio of leaves with Na content in soil, Na content in leaves with soil organic carbon, total P and total K, implying that sandy plants adapted to salt stress through specific leaf area change. Therefore, applying soil fertilizer would be an important measure for rapid restoration of coastal sandy vegetation, and the Na+ content in leaves could be used as the main index for salt-tolerance screening of sandy plants in tropical coast.
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BAI Xiaojie, SHEN Kaiping, MU Jun, WENG Tao, ZANG Lipeng, REN Wenda, HAN Xu, LI Qing, TAN Qiyu, HE Yuejun
2022,30(5):718-726, DOI: 10.11926/jtsb.4548
Abstract:
In order to understand the growth characteristics and survival status of the endangered Camellia luteoflora, an inventory of C. luteoflora resources was carried out in Chishui Alsophila National Nature Reserve, Guizhou Province. The height and ground diameter of each plant were investigated by sampling method, and the population number and structural characteristics were statistically analyzed. The population was divided into specific age groups with 0.5 cm diameter interval and classified into 5 diameter class from I to XV. A static life table was drawn to analyze the survival potential and development trend of the population. The results showed that a total of 545 individuals of C. luteoflora were found in the survey, the number varied greatly in different niches, ranging from 24 to 120. The number of individuals with ground diameter less than 0.5 cm and height less than 0.5 m were very few, and the maximum population was maintained with average ground diameter of 0.5- 2 cm. The mortality and extinction rates of I-II age class (0-1.0 cm) population increased sharply, while the life expectancy decreased sharply. The mortality and life expectancy of II-XV age class (≥0.5 cm) population tended to be flat, while the extinction rates fluctuated greatly but generally tended to be flat. The population structure and survival curve showed that the population was close to Deevey-I type, belonging to the declining population. Therefore, the seedling number of C. luteoflora population was seriously insufficient, the population self-renewal was difficult, the existing population interference pressure was large, showing obvious population decline trend, it was urgented to strengthen the population conservation.
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FENG Xinxin, LIU Zhixian, GU Wenqiang, LIU Jianxun, YU Jinchang, LIAO Wenbo, ZHONG Yuting, HUANG Xiaofeng
2022,30(5):727-734, DOI: 10.11926/jtsb.4559
Abstract:
In order to realize the status and ornamental value of wild germplasm resource of Rhodoleia (Hamamelidaceae) in China, a detailed field survey and recourse collection of 6 species of Rhodoleia was conducted. Based on cultivation experiments, a comprehensive evaluation index system was established by linear weighted synthesis method, and the potential in landscape application of Rhodoleia species were evaluated. The result showed that the comprehensive value of R. championii, R. stenopetala, R. parvipetala was high (Grade I with score>2.0), that of R. henryi was medium (Grade II with score 1.5-2.0), and that of R. forrestii and R. macrocarpa was low (Grade III with score<1.5). As excellent local arbors with gorgeous flower, R. championii, R. stenopetala, and R. parvipetala bear very high application potential in ornamental value, cultivation adaptability and novelty of development, which is worth further investigation and utilization.
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LI Yali, FU Lin, LEI Yuyang, LI Yuanqiu, CHEN Hongfeng
2022,30(5):735-741, DOI: 10.11926/jtsb.4523
Abstract:
In order to improve the morphological description of Firmiana danxiaensis, the macroscopic morphological characteristics of plants in four distribution points on Danxia and Karst landforms were compared. Specimens were collected at the three known distribution points (Danxia Mountain, Nanxiong, and Yingde) and the newly discovered distribution point (Shixing) during the flowering and fruiting periods. The results showed that there were obvious differences from the original description in petiole, leaf, inflorescence, stamens, follicle, calyx, etc. The original description lacked aborted stamens, aborted ovary, color changes in calyx, pericarp and seed coat during development. Therefore, the morphological description of F. danxiaensis was revised or supplemented, and pictures were also provided.
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ZENG Danqi, HE Chunmei, YU Zhenming, SI Can, CHEN Jing, HUANG Lei, Li Dongmei, DUAN Jun
2022,30(5):742-752, DOI: 10.11926/jtsb.4520
Abstract:
WOX (WUSCHEL-related homeobox) transcription factors (TFs) are closely associated with plant development, including embryogenesis, somatic embryogenesis, flower and root development, the initiation and maintenance of callus, and stem cell maintenance in plants. Increasing studies demonstrated that WOX TFs play a crucial role in plant development. Studied on the regulatory mechanisms of WOX in plant development provide a breakthrough in promoting plant development and constructing excellent plant phenotypes. The regulation of WOX TFs in plant development was reviewed, and the developmental processes by integrating WOX and epigenetic regulation were discussed, which aimed at providing inspiration for the mechanism of WOX TFs in regulating plant development.
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HE Qinqin, WENG Tao, LIU Bangyou, LUO Xiaohong, MU Jun, CHEN Jin, AN Mingtai, YAN Lingbin
2022,30(5):753-762, DOI: 10.11926/jtsb.4513
Abstract:
Cyatheaceae is an ancient relict plant. The existing natural communities of Alsophila spinulosa are very rare. Cyatheaceae distributes in high temperature, humidity and light spots, often in patches at the edges of evergreen broad-leaved forests. Currently, the main problems facing the conservation of A. spinulosa are ecological tourism, deforestation, environmental pollution, illegal picking and mining of medicinal materials, etc., which lead to the disturbance and fragmentation of habitat and the number decrease of A. spinulosa. The conservation methods of A. spinulosa mainly include in situ conservation and ex situ conservation, and the application of molecular biology technology in breeding is increasing gradually. The distribution and diversity of A. spinulosa are restricted by biological and abiotic factors, and the growth and distribution are greatly affected by biological factors, especially the interspecific relationship. The conservation of A. spinulosa from the perspective of interspecific relationship may be an effective way in the new era. The interspecific relationships between Cyatheaceae plants with microbial, other plants and animals were discussed, as well as the factors causing the extinction of A. spinulosa and the related conservation strategies and effects in recent years, which would provid a theoretical basis for the effective utilization and protection of A. spinulosa.
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2022,30(5):763-764, DOI: 10.11926/jtsb.4710
Abstract:
Volume 30,2022 Issue 5
Plant Physiology and Molecular Biology
Phytochemistry and Chemical Biolgy
Plant Ecology and Natural resource Management
Plant Systematics and Biogeography
Research Progress
海外撷英
Volume 30,2022 Issue 5
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WANG Lin, YI Qi-fei, SONG Xian-li, GUO Fei-li, LU Zhen-hua, XING Fu-wu
2014,22(6):558-566, DOI: 10.11926/j.issn.1005-3395.2014.06.003
Abstract:
In order to understand the landscape restoration of landfill in Big Taipa Hill, Macau, the species composition, vertical structure, floristic components, and community appearance were investigated by using sampling method. The results showed that there were 83 vascular plants in 12 plots of 1200 m2. The floristic composition of the community was dominated by Pantropical genera, account for 38.98%. The community appearance was determined by the micro- and meso-phanerophyte with herbaceous, simple and micromonophylls. The indexes of the landfill community were similar to that of nature plant community, indicated that the restoration of landfill was good. Based on the current situation of landfill, some preferred species for landscape restoration were selected, and suggestions were given for improving landscape. It was recommended that the landscape restoration should be carried out in stages. To get faster and better landscape restoration, proper manual intervention should be taken at different stages of community succession.
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HU Chao, TIAN Huai-zhen, DONG Quan-ying
2012,20(6):602-604, DOI: 10.3969/j.issn.1005-3395.2012.06.011
Abstract:
Anoectochilus lylei Rolfe ex Downie is newly reported to Chinese flora. The detailed morphological descriptions and photoes are also provided. This species is characterized by the white “Y”-shaped lips, epichiles lobes linear-oblong, mesochile with 1-3 short irregular denticles and the spur with 2 peltate calli inside.
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1997,5(3):69-73, DOI: 10.3969/j.issn.1005-3395.1997.3.015
Abstract:
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ZHANG Na, QIAO Yu-na, LIU Xing-zhao, CHU Guo-wei, ZHANG De-qiang, YAN Jun-hua
2010,18(5):502-510, DOI: 10.3969/j.issn.1005-3395.2010.05.006
Abstract:
The characteristics of five nutrient elements (K, Ca, Mg, N and P) in precipitation, throughfall and stemflow were studied in an monsoon broad-leaved evergreen forest at Dinghushan, Guangdong Province. Based on the precipitation allocation principles, the variation and input characteristics of these nutrients were calculated. The results showed that the contents of nutrient elements were in order as rainfall < throughfall < stemfall, in which the contents of K+ and total nitrogen (TN) were the highest, and those of total phosphorus (TP), HPO42- and total organic phosphorus (TOP) were the lowest. The biggest variation coefficient (Cv) of ion contents in precipitation was 1.282 for total organic nitrogen (TON), and the smallest was 0.502 for NO3-, while those in throughfall were 2.357 for TOP and 0.621 for TN, respectively. There were no significant relation between tree species and the contents of element (P>0.05). The annual inputs of nutrient elements from throughfall and stemflow into the soil were in the order as: TN>K+> Ca2+>Mg2+>TP. The annual input of Ca2+ from throughfall and stemflow were higher than that from litterfall decomposition. It concluded that rainfall was an important factor in transferring nutrient elements from forest canopy to soils.
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2014,22(4):323-334, DOI: 10.3969/j.issn.1005-3395.2014.04.001
Abstract:
Both herbarium and field observations have shown that Delphinium pseudothibeticum W. T. Wang & M. J. Warnock described from Mo-ting (= Mao-ding) Shan, Deqen, northwestern Yunnan, China, is identical with D. ceratophorum Franch. var. brevicorniculatum W. T. Wang, and that both D. motingshanicum W. T. Wang & M. J. Warnock and D. caeruleum Jacq. ex Camb. var. crassicalcaratum W. T. Wang & M. J. Warnock, also described from Mo-ting Shan, are identical with D. beesianum W. W. Smith (D. motingshanicum is no more than a gigantic form of D. beesianum). Delphinum ceratophorum var. brevicorniculatum is currently known only from Deqen, while D. beesianum is a very common species in northwestern Yunnan. Delphinium pseudothibeticum, D. motingshanicum and D. caeruleum var. crassicalcaratum are all synonymized.
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WANG Qing-bing, ZHANG Jian-feng, CHEN Guang-cai
2013,21(5):479-488, DOI: 10.396/j.issn.1005-3395.2013.05.016
Abstract:
The isotope tracer technology is a kind of method by adding exogenous elements or substance as a tracer co-operating in organism completely, which used to indicate the change process of elements or substance in organism. Nitrogen stable isotope tracer technology can reveal essentially the mechanism of ecological process, so it becomes one of important tools for ecology research. In order to understand the advances in application of nitrogen stable isotope technique in nitrogen cycle of plant-soil system, nitrogen cycle based on 15N tracer technique was reviewed. The nitrogen stable isotope technique in solving ecology problems was prospected and some existing shortcomings are also discussed.
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2003,11(2):190-196, DOI: 10.3969/j.issn.1005-3395.2003.2.021
Abstract:
Recent studies on plant responses to elevated CO2 is reviewed. Increase in atmospheric CO2 concentration affects not only global climate but also plant morphology, water use, protein synthesis, photosynthesis, resistance, growth, biomass and so on. Elevated CO2 has effects of promoting the growth of plant roots and seedlings, making the leaf thick, lowering the stomatal density, stomatal conductance and transpiration, enhancing the water use efficiency, crop yield and biomass, intensifying the biosynthesis of ethylene and antioxygen competence. High CO2 concentration together with other environmental factors affect plants. Plants with different photosynthetic pathways (C3, C4 and CAM) and different vegetation types (natural and artificial vegetation) exhibite different responses to high CO2 concentration. Short-term exposure to elevated CO2 enhances photosynthesis while long-term inhibits. Experimental conditions such as air pressure, temperature, water availability, nutrition status, oxygen, light intensity even growth space also have great effect on the results of the experiments.
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MA San-mei, LIN Wen-le, YANG Wei-dong
2010,18(5):497-501, DOI: 10.3969/j.issn.1005-3395.2010.05.005
Abstract:
The changes in stomatal distribution, density and stomatal index of Canna generalis Bailey flower at different development stages were studied. The results showed that stomata distributed in upper and lower epidermis of petal, bract and calyx. Stomatal density and stomatal index on upper epidermis of petal, bract and calyx were smaller than those on lower surface. With the development of flower, the stomatal density and stomatal index on the petal, bract and calyx increased firstly and then decreased.
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Li Meiru, Liu Hongxian, Wang Yirou
1997,5(3):74-82, DOI: 10.3969/j.issn.1005-3395.1997.3.016
Abstract:
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XIE Xian-qiang, WU Ping, LIN Li-dong, LIU Mei-fang, WEI Xiao-yi*
2007,15(5):450-454, DOI: 10.3969/j.issn.1005-3395.2007.5.015
Abstract:
Twelve chemical constituents were isolated from Polygonum chinense Linn. On the bases of spectral data, they were identified as syringic acid (1), apigenin (2), 3,3′-di-O-methylellagic acid (3), gallic acid (4), protocatechuic acid (5), isorhamnetin (6), caffeic acid (7), quercetin (8), luteolin (9), gallicin (10), avicularin (quercetin-3-O-α-L-arabinofuranoside)(11) and 3,4,8,9,10-pentahydroxy -6H-dibenzo [b,d]pyran-6-one (12). All these compounds except 4 and 8 were reported from the species for the first time.
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2014,22(2):107-120, DOI: 10.3969/j.issn.1005-3395.2014.02.001
Abstract:
We point out that the inclusion of east China's Jiangsu Province in the distribution of Ligularia przewalskii, a species actually occurring only in Gansu, Qinghai, Nei Mongol (Inner Mongolia), Ningxia, Shaanxi, Shanxi, and Sichuan, most likely is a result of misinterpreting "Kansu (= Gansu)" as "Kiangsu (= Jiangsu)". This inadvertent error first appeared in Flora Reipublicae Popularis Sinicae 77(1), and was widely perpetuated in subsequent publications. Critical comments are made on some problems apparent in floristic works (particularly regional Floras at provincial level) of China.
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HUANG Jun-zhe, GU Song*，HUANG Ya-nan, ZHENG Qiang, TIAN Jun-ying，JIANG Sha*
2007,15(3):219-223, DOI: 10.3969/j.issn.1005-3395.2007.3.006
Abstract:
The development of primary vascular tissues of root-stem transitional region was studied in Robinia pseudoacacia L. seedlings of 1-12 days using sequential paraffin section. The primary vascular tissues of roots are connected with the cotyledons via the hypocotyl. The results support the viewpoints of Esau et al. that the whole seedling of Robinia pseudoacacia L. is divided into two systems of the root-hypocotyl-cotyledon and the epicotyl, and there is only a simple linkage between the vascular tissues of stem and the hypocotyl without any transition.
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LIN Juan， ZHOU Xuan-wei， TANG Ke-xuan， CHEN Fang
2004,12(3):285-290, DOI: 10.3969/j.issn.1005-3395.2004.3.018
Abstract:
This paper briefly reviews the studies of medicinal plant Jatropha curcas on the following aspects: morphology and habitat; effective components including terpens, flavons, fats, coumarins, sterols, etc.; toxicity and pharmacological activities; medicinal use; and application prospects.
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YI Qi-fei， XING Fu-wu*， HUANG Xiang-xu， CHEN Hong-feng， WANG Fa-guo
2005,13(1):65-69, DOI: 10.3969/j.issn.1005-3395.2005.1.013
Abstract:
Fifteen medicinal Bulbophyllum species in China are presented. The local names, distribution, habitat, and folk medicinal uses are given. Bulbophyllum species used as folk herbs are mostly distributed in south and south-west China, in particular, in Yunnan Province. Some species such as B. kwangtungense, B. odoratissimum and B. ambrosia are common in Guangdong and Guangxi. Some suggestions for the conservation and reasonableutilization of the plant resources are made.
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LI Wei, MEI Wen-li, ZUO Wen-jian, WANG Hao, DAI Hao-fu
2014,22(2):201-212, DOI: 10.3969/j.issn.1005-3395.2014.02.015
Abstract:
The chemical constituents of Aquilaria sinensis mainly include flavonoids, benzophenones, lignans, phenylpropanoids, terpenoids, alkaloids, steroids, phenolic compounds. Some of them have anti-tumor, antibacterial, anti-inflammatory, analgesic, and laxative activities. The chemical constituents isolated from A. sinensis were reviewed, and the biological activities of some compounds were also introduced. These would provide scientific basis for development and utilization of A. sinensis.
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YANG Xiao-hong, CHEN Xiao-yang, LIU Ke-feng
2006,14(3):256-262, DOI: 10.3969/j.issn.1005-3395.2006.3.016
Abstract:
Cytokinins are important plant hormones and can delay plant senescence, In this review three approaches in study of the effects of cytokinins on plant senecence are presented： the analysis of endogenous cytokinins during senescence； the application of exogenous cytokinins； and the research on transgenic plants with cytokinin biosynthesis or biodegradation genes. The mechanisms of cytokinins in retarding of senescence was discussed in relation to saccharides, lipid oxidation, as well as to other hormones.
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CHEN Xin-jian， LIU Guo-shun， CHEN Zhan-kuan， ZHI Yu-bao， YI Ming-lin， LIU Hong-xian
2002,10(1):83-98, DOI: 10.3969/j.issn.1005-3395.2002.1.018
Abstract:
This review contents a brief retrospection of physiological functions of plant hormone，ethylene The progresses concerned three important enzymes：SAMS，ACS and ACO in ethylene biosyn-thetic pathway are highlighted The possible methods to control endogenous ethylene’s productionin fruits or flowem by genetic engineering are outlined．
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2004,12(3):280-284, DOI: 10.3969/j.issn.1005-3395.2004.3.017
Abstract:
The development of annona fruit production is restricted due to the difficulty in fresh-keeping of the fruits during storage and transportation. This paper reviews postharvest physiology of annonas, including respiration and ethylene production, relevant enzymes, fruit softening, fruit browning, and postharvest pathology.
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MA Guo-hua，HE Yue-min，ZHANG Jing-feng，CHEN Fu-1ian
2005,13(3):233-238, DOI: 10.3969/j.issn.1005-3395.2005.3.008
Abstract:
Semi-parasitism in the sandalwood(Santalum album L．) seedlings was studied on the basis of propagation of different host plant species． The sandalwood plants can grow normally without host plant during seed germ ination and early seedling stage． However， the subsequent growth needs suitable host plant for roots to be parasitized． The experiment indicated that host plant species had great impact on the growth of sandalwood seedlings and their root haustoria， which revealed the differences in haustorium number， size and adhesiveness．Based on our preliminary study， host plants species， such as Hibiscus rosa—sinensis and Phyllanthus reticulatus were found good for the growth of sandalwood seedlings． It was observed that the sandalwood roots lacked root hairs， but its vessels were well developed， which is benefit for absorption of water an d nutrition from the host roots．The process ofroot semi-parasitism ofsandalwood in Hibiscus was also investigated．
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CHEN Rong, ZHANG Xin-hua, MA Guo-hua*
2014,22(1):53-60, DOI: 10.3969/j.issn.1005-3395.2014.01.009
Abstract:
In order to understand the parasitic relationship between Santalum album L. and leguminous plants, eleven leguminous species were planted with S. album. The leaf photosynthetic characters, height and base diameter of S. album and its haustoria number and size were studied. The results showed that number and size of haustoria, height and base diameter of S. album had significant differences among different hosts. The excellent hosts for S. album were Calliandra haematocephala, Caesalpinia sappan, Acacia confusa and Erythrina corallodendron, and Acacia mangium, Dalbergia odorifera and Cassia surattensis were just general hosts, while Delonix regia, Ormosia pinnata, Leucaena leucocephala and Bauhinia blakeana were unsuitable hosts. Meanwhile, the height and diameter, leaf photosynthesis characters of S. album had close relation with number of haustoria parasitized on roots of leguminous plants. So, the plantation of S. album should choose appropriate host plant.
