Rice gene expression profiles responding to larval feeding of the striped stem borer at the 1st to 2nd instar stage
文献类型: 外文期刊
第一作者: Zhang, Yong-Jun
作者: Zhang, Yong-Jun;Cao, Guang-Chun;Gu, Shao-Hua;Wu, Kong-Ming;Guo, Yu-Yuan;Sun, Yang;Gao, Xi-Wu
作者机构:
关键词: allene oxide cyclase (AOC);proteinase inhibitor (PI);real-time quantitative PCR (RT-qPCR);striped stem borer (SSB);suppression subtractive hybridization (SSH);terpene synthase (TPS)
期刊名称:INSECT SCIENCE ( 影响因子:3.262; 五年影响因子:3.206 )
ISSN: 1672-9609
年卷期: 2011 年 18 卷 3 期
页码:
收录情况: SCI
摘要: The objective of this study was to identify rice genes that are in response to the striped stem borer (SSB) (Chilo suppressalis Walker) feeding at the first to second larval stage. Using combined suppression subtractive hybridization (SSH) and dot blot approaches, we analyzed the induced defense genes that took place during the first 72 h of infesting intact rice (Oryza sativa L.) plants in sheath tissues with SSB larvae. By sequencing the whole SSH library, 39 expressed sequence tags involved in disease stress, insect stress or other stress responses were identified to be up-regulated by SSB larvae feeding. Among these genes, rice allene oxide cyclase (AOC), terpene synthase (TPS) and four proteinase inhibitor (PI) genes were up-regulated by SSB larvae feeding. Real-time quantitative reverse transcription polymerase chain reaction analysis showed that four rice PI genes were already up-regulated at 6 h, and reached peaks between 6 h to 12 h. In addition, the transcription of gene involving in jasmonate signaling pathway such as allene oxide cyclase (AOC) concerning rice early defense response to SSB feeding was activated after rice feeding by SSB for 2 h. Although the expression of rice terpene synthase (TPS) gene, involved in the biosynthesis of monoterpenes or diterpenes, was already up-regulated at 7 h, a significant increase in the expression was delayed until 12 h and reached its peak at 24 h. The present study identified six SSB-response genes and their expression patterns, which provides evidence and information to understand insect stress-response in plants.
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