Expression of rice gene OsMSR4 confers decreased ABA sensitivity and improved drought tolerance in Arabidopsis thaliana

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• 作者：Xuming Yin (1)
  Lifang Huang (1)
  Xin Zhang (2)
  Manling Wang (1)
  Guoyun Xu (1)
  Xinjie Xia (1)
  
  1. Laboratory for Agro-ecological Process in Subtropical Region ; Institute of Subtropical Agriculture ; Chinese Academy of Sciences ; Hunan ; 410125 ; People鈥檚 Republic of China
  2. Graduate School of the Chinese Academy of Sciences ; Beijing ; 100049 ; People鈥檚 Republic of China
  
• 关键词：Small heat shock protein gene ; Drought ; ABA ; Arabidopsis ; OsMSR4
• 刊名：Plant Growth Regulation
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：75
• 期：2
• 页码：549-556
• 全文大小：1,100 KB
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• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Physiology
  
• 出版者：Springer Netherlands
• ISSN：1573-5087

文摘

The small heat shock proteins (sHSPs) are most prevalent in plants and are believed to play an important role in stress tolerance. Our microarray and qRT-PCR analyses of rice plants showed that the gene Oryza sativa Multi-Stress-Responsive 4 (OsMSR-4) is induced by heat, drought, and cold in different tissues at various developmental stages. OsMSR-4 encodes a Class III sHSP. Its expression in Arabidopsis thaliana conferred enhanced tolerance to drought accompanied by altered expression of other stress-related genes. Under drought conditions, levels of free proline were higher in transgenic plants than in the wild-type. The transgenics also showed decreased sensitivity to abscisic acid (ABA) during the seed germination and post-germination stages. Our study provides evidence that OsMSR4 has a key role in regulating plant responses to ABA and drought.