养分胁迫对籽粒灌浆期水稻叶片衰老影响的蛋白质组学分析

谢金水, 邵彩虹, 唐秀英, 石庆华,

doi:10.3969/j.issn.1001-7216.2011.02.004

中国水稻科学 >

2011 , Vol. 25 >Issue 2: 143 - 149

DOI: https://doi.org/10.3969/j.issn.1001-7216.2011.02.004

研究报告

养分胁迫对籽粒灌浆期水稻叶片衰老影响的蛋白质组学分析

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(¹江西农业大学农学院, 江西南昌 330045; ²江西省农业科学院土壤肥料与资源环境研究所, 江西南昌 330200; ﹟共同第一作者; *通讯联系人, E-mail: shiqh@nc.jx.cn)

收稿日期: 2010-05-07

修回日期: 2010-06-08

网络出版日期: 2011-03-11

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Proteomics Analysis of Nutrient Stress Effect on Rice Leaf Senescence at Grain Filling Stage

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(¹College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China; ²Soil and Fertilizer ＆ Resource and Environment Institute，Jiangxi Academy of Agricultural Sciences，Nanchang 330200, China; ﹟These authors contributed equally to this paper; *Corresponding author, E-mail: shiqh@nc.jx.cn)

Received date: 2010-05-07

Revised date: 2010-06-08

Online published: 2011-03-11

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摘要

采用蛋白质组学分析技术，对养分胁迫下杂交水稻威优916功能叶片蛋白质组差异表达进行研究，以揭示养分胁迫影响籽粒灌浆期水稻衰老的分子机理。经双向电泳分离，从功能叶中获得34个差异表达蛋白质，其中26个蛋白质功能得到鉴定，包括11个参与光合作用蛋白质，4个参与呼吸作用蛋白质，10个参与抗氧化及信号传导蛋白质和1个未知功能蛋白质。分析结果表明，养分胁迫下，灌浆期水稻叶片光合作用及呼吸作用显著下降；清除活性氧类蛋白质表达量下调，活性氧生成蛋白质及胁迫信号传导蛋白质表达量上调，水稻抗性减弱，叶片中活性氧积累，水稻衰老加剧。

关键词： 水稻; 养分胁迫; 功能叶; 衰老; 蛋白质组学

本文引用格式

谢金水, 邵彩虹, 唐秀英, 石庆华, . 养分胁迫对籽粒灌浆期水稻叶片衰老影响的蛋白质组学分析[J]. 中国水稻科学, 2011 , 25(2) : 143 -149 . DOI: 10.3969/j.issn.1001-7216.2011.02.004

Abstract

In order to reveal the molecular senescence mechanism of rice under nutrient stress at grain filling stage, the protein expression profile of functional leaves in hybrid rice Weiyou 916 was investigated by the approach of proteomics. Proteins were extracted from rice flag leaf and separated by two-dimensional gel electrophoresis. Thirty-four differentially expressed proteins were obtained, among which 26 were identified by matrix-assisted laser desorption/ionization-time of flight mass spectrometry, and categorized into four groups of functions: 11 proteins were associated with photosynthesis, four proteins were associated with respiration, 10 proteins were related to antioxidative pathways and signal transmitting and one protein was putative protein. The functions of these 26 proteins were analyzed and the conclusion could be drawn from the following results: under nutrient stress conditions, photosynthesis and respiration of rice leaf declined significantly; proteins associated with antioxidative pathways decreased in expression abundance, and proteins associated with active oxygen synthesis and signaling showed drastical increase in expression abundance, which resulted in reduced resistance and accumulated active oxygen, consequently accelerated rice senescence process.

Key words： rice; nutrient stress; functional leaf; senescence; proteomics

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