《植物生理学报》 2012, 48(7): 637-642

扩展蛋白与植物抗逆性关系研究进展

赵美荣¹, 李永春¹, 王玮^2,*

1赤峰学院生命科学学院, 内蒙古赤峰024000; 2山东农业大学生命科学学院, 作物生物学国家重点实验室, 山东泰安271018

通信作者：王玮；E-mail: wangw@sdau.edu.cn；Tel: 0538-8246166

摘　要：

扩展蛋白是一种细胞壁蛋白, 可调节细胞壁的松弛和伸展。目前研究表明, 扩展蛋白几乎参与调节植物生长发育的 整个进程。扩展蛋白还与植物的多种抗性反应有关, 在植物对干旱、高盐以及病虫害等生物胁迫和非生物胁迫响应方面 起着重要的调节作用。干旱胁迫下扩展蛋白基因的表达与植物的抗旱性有一定的关系; 植物的耐盐性受到扩展蛋白基因 表达的影响; 淹水促进植物的伸长生长与扩展蛋白的表达密切相关; 扩展蛋白调节细胞壁松弛为植物抗病性研究提供了新 的思路。

关键词：扩展蛋白; 细胞壁; 胁迫响应

收稿：2012-03-23   修定：2012-04-20

资助：国家自然科学基金(30671259)。

Research Progress on Relationship between Expansin and Plant Resistance

ZHAO Mei-Rong¹, LI Yong-Chun¹, WANG Wei^2,*

¹College of Life Sciences, Chifeng University, Chifeng, Inner Mongolia 024000, China; ²State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, Shandong 271018, China

Corresponding author: WANG Wei; E-mail: wangw@sdau.edu.cn; Tel: 0538-8246166

Abstract:

As a cell wall protein, expansin causes cell wall loosening and extension. The advancements of expansins support that expansins play an important role in physiological process of plant growth. Many studies suggested that expansin was involved in plant response to some biotic or abiotic stress, such as drought, salt and diseases. Under drought stress, the expression of expansin gene is related to drought resistance. Salt resistance is affected by expansin gene expression. Submergence induced elongation results from expansin accumulation. Cell wall loosening regulated by expansin provide a new way for plant disease resistance.

Key words: expansin; cell wall; stress response