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园艺学报 ›› 2013, Vol. 40 ›› Issue (10): 2058-2066.

• 综述 • 上一篇    下一篇

RNA分子在植物韧皮部长距离运输的研究进展

李苹芳,羊杏平*,徐锦华,刘 广,姚协丰,高长洲,朱凌丽   

  1. (江苏省农业科学院蔬菜研究所,南京 210014)
  • 收稿日期:2014-04-09 出版日期:2013-10-25 发布日期:2013-10-25

Advances in Long Distance Transport of RNA Molecules in Plant Phloem

LI Ping-fang,YANG Xing-ping*,XU Jin-hua, LIU Guang, YAO Xie-feng, GAO Chang-zhou,and ZHU Ling-li   

  1. (Institute of Vegetable Crops,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)
  • Received:2014-04-09 Online:2013-10-25 Published:2013-10-25

摘要: RNA分子存在于植物韧皮部筛分子中,且能进行长距离运输,这是植物界一个突破性的发现。现已发现有3类RNA存在于韧皮液内,包括外源类病毒或RNA病毒,植物内源mRNA和非编码小RNA。韧皮液内RNA分子的长距离移动可作为系统信号分子介导植物生长发育的调控。本文就韧皮液的取样方法,韧皮液内存在的RNA分子及其介导的信号调控和运输机制等进行了综述。

关键词: 长距离运输, 韧皮液, 病毒, mRNA, miRNA, siRNA

Abstract: The presence ofRNA molecules in plant phloem sieve elements which can do long-distance transport is an important discovery in plant kingdom. And it has been discovered that there are three kinds of RNA molecules in phloem sap including exogenous viroids or virus RNA,plant endogenous mRNA and small non-protein-coding RNA(snRNA). Long-distance transport of RNAs in phloem sap can function as signal molecules in mediating plant growth and development. In this paper,the methods of how to collect phloem sap,the RNA molecules in plant phloem sap and the signaling pathways as well as the mechanisms by which how they are transported are discussed and summarized.

Key words: long-distance transport, phloem sap, virus, mRNA, miRNA, siRNA

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