中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

外源山梨醇对盐胁迫下两优培九和武运粳7号光合特性及类囊体膜多肽组分的影响

杨艳华1,2;陈国祥1,*; 刘少华1; 周泉澄1; 陈 利1; 王贵民1; 吕川根3   

  1. 1南京师范大学 生命科学学院， 江苏 南京210097； 2济宁师范专科学校 生物系， 山东 济宁272000； 3江苏省农业科学院 粮食作物研究所， 江苏 南京 210014
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-05-10 发布日期:2004-05-10

Effect of Exogenous Sorbitol on Photosynthetic Characteristics and Polypeptide Compositions of Thylakoid Membrane of Liangyoupeijiu and Wuyunjing 7 under Salt Stress

YANG Yan-hua 1; 2; CHEN Guo-xiang 1; *; LIU Shao-hua 1; ZHOU Quan-cheng 1; CHEN Li 1; WANG Gui-min 1; LU Chuan-gen 3   

  1. （1College of Life Science; Nanjing Normal University; Nanjing 210097; China; 2Department of Biology; Jining Teachers’ College; Jining 272000; 3Institute of Food Crops; Jiangsu Academy of Agricultural Sciences; Nanjing 210014; China）
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-05-10 Published:2004-05-10

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被引次数

31

摘要： 以4叶期的水稻幼苗为材料，比较研究了外源山梨醇处理对盐胁迫下两优培九和武运粳7号幼苗光合特性及类囊体膜多肽组分的影响。研究结果表明，随着盐处理浓度的增加，两优培九和武运粳7号的叶绿素含量、PSⅡ的电子传递活性、叶绿体放氧活性、光合速率呈下降趋势；叶绿体ATP含量、 叶绿体ATP酶(Mg2＋ATP酶和Ca2＋ATP酶)活性先升后降，PSⅠ的电子传递活性、呼吸速率则呈上升的趋势；但类囊体膜的多肽组分并不存在明显的差异。相比之下，两优培九对盐胁迫的抗性大于武运粳7号，具有一定的高产优势。外源山梨醇对两种水稻抵抗盐胁迫具有一定的缓解作用。

关键词: 盐胁迫, 水稻, 山梨醇, 光合特性, 类囊体膜多肽组分

Abstract: Photosynthetic characteristics and polypeptide compositions of thylakoid membrane in four-leaf-stage rice seedlings of Liangyoupeijiu and Wuyunjing 7 under salt stress were studied when rice plants were sprayed with sorbitol. With increase of salt concentration, chlorophyll content, electron transport activity of PSⅡ, the O2 evolution of chloroplast and photosynthetic rate decreased, the ATP content in chloroplast, ATPase activity of chloroplast first boosted up and then dropped, but electron transport activity of PSⅠ, respiration rate enhanced. There were not obvious differences on the polypeptide compositions of thylakoid membrane. The resistance to salt stress in Liangyoupeijiu is obviously stronger than that in Wuyunjing 7. Exogenous sorbitol has some mitigative functions to salt stress.

Key words: salt stress, rice, sorbitol, photosynthetic characteristics, polypeptide compositions of thylakoid membrane