首页 | 本刊简介 | 编委会 | 投稿征稿 | 期刊订阅 | 下载中心 | English
 
   
  论文快速检索

请输入关键词

 

 

   
  信息公告
访问总次数
16056272
今日访问
66
当前在线
0人
 
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1441次   下载 35 本文二维码信息
码上扫一扫!
分享到: 微信 更多
丛枝菌丝网络介导苜蓿植株间机械损伤信号的传递
李莎1, 斯那永宗2, 徐若1, 字淑慧1, 范林元3, 刘涛1
1.云南农业大学云南与生物技术学院, 昆明 650201;2.德钦县升平镇人民政府农业综合服务中心, 云南 迪庆 674599;3.云南省林木种苗站, 昆明 650201
摘要:  为了解植株间的菌丝网络(common mycorrhizal networks,CMNs)的功能,对丛枝菌根菌丝网络在紫花苜蓿(Medicago sativa)机械损伤信号传递中的作用进行了研究。结果表明,与经机械损伤处理的供体植株有CMNs连接的受体植株叶片中挥发物的数量和种类都显著高于无CMNs连接的植株;供体植株经机械损伤处理后,有CMNs连接的受体植株的超氧化物歧化酶(SOD)等抗逆酶活性都显著升高。这表明机械损伤诱导的防御信号可通过地下菌丝网络传递给邻近植株,激活邻近植株防御系统,使邻近未受机械损伤的苜蓿植株改变挥发性气体,并改变其防御酶活性,用以修复损伤带来的伤害。
关键词:  紫花苜蓿  菌丝网络  防御信号  防御酶
DOI:10.11926/jtsb.4308
分类号:
基金项目:国家自然科学基金项目(81473310)资助
Defense Signal Transmission between Alfalfa Plants through Underground Mycorrhizal Network
LI Sha1, SINA Yong-zong2, XU Ruo1, ZI Shu-hui1, FAN Lin-yuan3, LIU Tao1
1.College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China;2.Agricultural Comprehensive Service Center of Shengping Town People's Government of Deqin County, Diqin 674599, Yunnan, China;3.Yunnan Forest Seedling Station, Kunming 650201, China
Abstract:  In order to understand the function of common mycorrhizal networks (CMNs) among plants, its role in mechanical damage signal transduction of Medicago sativa was studied. The results showed that analyzed whether the damage signal of donor plants could be transmitted to the neighboring recipient plants through CMNs. The number and kinds of volatile compounds in leaves of recipient plants connected with CMNs were significantly higher than those connected without CMNs. The activities of defense enzyme also increased significantly in recipient plants connected with CMNs. Therefore, it was suggested that the defense signals induced by mechanical damage could be transmitted to neighboring plants through CMNs, which activates the defense system of neighboring plants, so that the nearby alfalfa plants without mechanical damage changed the volatile gas and the defense enzyme activity, so as to repair the damage caused by the damage.
Key words:  Medicago sativa  Mycorrhizal network  Defense signal  Defense enzyme

Copyright 2007 版权所有 中国科学院华南植物园《热带亚热带植物学报》编辑部
地址: 广州市天河区兴科路723号 中国科学院华南植物园 《热带亚热带植物学报》编辑部 邮编:510650 电话: 86 (0)20-3725 2514  传真: E-mail: jtsb@scib.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09084417号-2