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Analysis of thylakoid membrane protein and photosynthesis-related key enzymes in super high-yield hybrid rice LYPJ grown in field condition during senescence stage

文献类型： 外文期刊

作者： Wang, Yuwen 1 ; Yu, Jing 1 ; Jiang, Xiaohan 1 ; Sun, Lingang 1 ; Li, Kang 1 ; Wang, Pingyang 1 ; Wu, Min 1 ; Chen, Guoxia 1 ;

作者机构： 1.Nanjing Normal Univ, Life Sci Coll, Jiangsu Key Lab Biodivers & Biotechnol, Nanjing 210023, Jiangsu, Peoples R China

2.Nanjing Univ Sci & Technol, Zijin Coll, Nanjing 210023, Jiangsu, Peoples R China

关键词： Thylakoid membrane;Flag leaves;Senescence;Field condition

期刊名称：ACTA PHYSIOLOGIAE PLANTARUM （ 影响因子：2.354； 五年影响因子：2.711 ）

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收录情况： SCI

摘要： A proteomic analysis combining photosynthesis-related key enzymes measurement and mRNA level analysis was used to investigate the variations of proteins involved in the photosynthetic apparatus in flag leaves of high-yield rice LYPJ during senescence under field conditions. The stability of chlorophyll-protein complexes of thylakoid membranes was measured by BN-PAGE system. Our findings revealed that the LHCII complexes were more stable than F0F1-ATPase and Cyb(6)/f complexes. Thylakoid membranes proteins during the senescence stage were separated by two-dimensional gel electrophoresis. We identified 13 photosynthesis-related proteins (a fivefold or greater variation), including electron transport, Calvin-Benson cycle and chloroplast protease during senescence of flag leaves. Moreover, our data showed that Ca2+-ATPase was more stable during senescence of flag leaves in rice, compared to Mg2+-ATPase. In enzymes activities analyses, it was observed that a little increment of C4 photosynthetic enzymes activities at the beginning of flag leaves senescence might compensate, to some degree, for the larger reductions in Rubisco activity, confirmed by quantitative RT-PCR analysis.

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[1]Photosynthetic changes of flag leaves during senescence stage in super high-yield hybrid rice LYPJ grown in field condition. Wang, Yuwen,Zhang, Jingjing,Yu, Jing,Jiang, Xiaohan,Sun, Lingang,Wu, Min,Chen, Guoxiang,Wu, Min,Lv, Chuangen.

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