首页 > 过刊浏览>2020年第28卷第4期 >339-346. DOI:10.11926/jtsb.4170
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丛枝菌根真菌促进南美蟛蜞菊生长及对难溶磷的吸收
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国家自然科学基金项目（31700342，31600326，31770446）；江苏大学高级人才科研启动基金项目（15JDG032）；江苏高校水处理技术与材料协同创新中心项目资助


Arbuscular Mycorrhizal Fungi Promote the Growth of Wedelia trilobata and the Absorption of Insoluble Phosphorus
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    摘要:

    为了解2种丛枝菌根真菌（AMF）摩西管柄囊霉（Funneliformis mosseae，FM）和地表球囊霉（Glomus versiforme，GV）对入侵植物南美蟛蜞菊（Wedelia trilobata）的生长和对难溶性磷酸盐利用的影响，采用沙培盆栽方式，研究了南美蟛蜞菊在接种AMF与添加难溶性磷酸盐的生长和磷含量的变化。结果表明，在磷限制环境下FM对南美蟛蜞菊的侵染率达55%~69%，GV的侵染率达到63%~80%。添加难溶性磷酸盐后，2种AMF均促进了南美蟛蜞菊茎的伸长（FM：+46%；GV：+65%）、总生物量的增加（FM：+27.2%；GV：+40%）和磷含量的增加（FM：+36.6%；GV：+40.7%）。对比FM，GV对植物利用难溶性磷有更显著的促进作用。因此，南美蟛蜞菊与2种AMF形成的共生体系可以促进植物生长和对营养资源的利用，提高对难溶性磷的吸收效率可能使得南美蟛蜞菊在营养贫乏的环境中更好地建立种群。

    Abstract:

    The aim was to understand the effect of two arbuscular mycorrhizal fungi (AMF), such as Funneliformis mosseae (FM) and Glomus versiforme (GV), on the growth and phosphorus uptake of Wedelia trilobata. The changes in the growth and total P concentration of W. trilobata leaves were studied after inoculated AMF and added insoluble phosphate by sand culture pot planting. The results showed that F. mosseae and G. versiforme could establish symbiosis relationships with W. trilobata with infection rate of 55%-69% and 63%-80%, respectively. When insoluble phosphate were supplied, both F. mosseae and G. versiforme were able to promote the stem elongation (FM:+46%; GV:+65%), total biomass (FM:+27.2%; GV:+40%) and enhance phosphorus content (FM:+36.6%; GV:+40.7%) of W. trilobata. Compared to F. mosseae, G. versiforme was better in enhancing insoluble phosphorus uptake by W. trilobata. Therefore, it was suggested that the symbiosis between W. trilobata and AMF could significantly facilitate the plant growth and enhance the efficiency of insoluble phosphate uptake, which could be benefit the survival of W. trilobata in harsh environment.

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李琴,陈琪,贺芙蓉,BHARANI Manoharan,戴志聪,祁珊珊,杜道林.丛枝菌根真菌促进南美蟛蜞菊生长及对难溶磷的吸收[J].热带亚热带植物学报,2020,28(4):339~346

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  • 收稿日期:2019-10-29
  • 最后修改日期:2019-12-24
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