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
15321933
今日访问
2097
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 144次   下载 111 本文二维码信息
码上扫一扫!
分享到: 微信 更多
瘤菌根菌对铁皮石斛根系形态的影响及其共生关系的研究
王伟英, 邹晖, 戴艺民, 林江波
福建省农业科学院亚热带农业研究所, 福建 漳州 363005
摘要:  为了解瘤菌根菌(Epulorhiza sp.)与铁皮石斛(Dendrobium officinale)根系的共生关系及其对根系农艺性状的影响,用液体培养瘤菌根菌浇灌无菌盆栽铁皮石斛苗根部共培养,观察石斛根的表型和超微结构变化,并用分子检测鉴定菌丝是否定殖根中。结果表明,瘤菌根菌菌丝能侵入根的皮层细胞,诱导生成菌丝团形成共生关系。共生后的菌丝能提高IAA含量,诱导根系结构发生改变生成侧根,增大了根系体积,促进根系的生长并显著提高根系活力。瘤菌根菌与铁皮石斛根共培养后建立共生关系形成菌根且能定殖于根中,诱导根系结构的变化,侧根的形成对石斛生长具有重要作用。
关键词:  铁皮石斛  瘤菌根菌  根系形态  共生关系
DOI:10.11926/jtsb.4093
分类号:
基金项目:福建省农业科学院科技创新基金(PC2018-13);福建省科技厅公益类项目(2016R1012-5)资助
Effect of Epulorhiza sp. on Root Morphology of Dendrobium officinale and Their Symbiotic Relationship
WANG Wei-ying, ZOU Hui, DAI Yi-min, LIN Jiang-bo
Subtropical Agriculture Research Institute, Fujian Academy of Agricultural Sciences, Zhangzhou 363005, Fujian, China
Abstract:  In order to understand the symbiotic relationship between Epulorhiza sp. and the roots of Dendrobium officinale, and also to make certain the influence of Epulorhiza sp. on root morphology, the roots of D. officinale were irrigated with liquid cultured Epulorhiza sp., the changes in phenotype and ultrastructure of roots were observed after three months. The results showed that the cortical cells of root were invaded by mycelia, which induced the formation of mycelium group to form a symbiotic relationship between Epulorhiza sp. and the roots. The content of IAA in root increased after co-cultured with Epulorhiza sp., and the lateral roots were induced for increasing root volume, as well as the root vitality was significantly improved. Therefore, Epulorhiza sp. co-cultured with the roots of D. officinale not only could generate mycorrhizal to establish a symbiotic relationship, but also the symbiotic mycelium could colonize in roots, induced the changes in root structure, and the formation of lateral root played an important role in growth of D. officinale.
Key words:  Dendrobium officinale  Epulorhiza sp.  Root morphology  Symbiotic relationship

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