NaCl胁迫增强杂交酸模(Rumex K-1)幼苗叶片光系统Ⅱ的耐热性

被引：9

作者：

陈华新

安沙舟

李卫军

高辉远

机构：

[1] 山东农业大学生命科学学院,新疆农业大学草业工程系,新疆农业大学草业工程系,山东农业大学生命科学学院泰安,乌鲁木齐,乌鲁木齐,泰安

来源：

植物生理与分子生物学学报 | 2004年 / 03期

关键词：

杂交酸模; NaCl胁迫; 热胁迫; 叶绿素荧光;

D O I：

暂无

中图分类号：

Q945 [植物生理学];

学科分类号：

0903 ;

摘要：

NaCl胁迫对杂交酸模幼苗光系统Ⅱ(PS Ⅱ)的最大光化学效率没有影响,但是增强了PS Ⅱ的耐热性。热胁迫条件下,与未经盐胁迫处理的叶片相比,经NaCl 200 mmol/L处理的杂交酸模幼苗叶片,其PS Ⅱ最大光化学效率下降较小,反映OEC受伤程度的指标Fk/Fj上升较小。此外,光化学猝灭系数(qp)、PS Ⅱ反应中心光能捕获效率(Fv’/Fm’)、PS Ⅱ光化学转换效率(ΦPS Ⅱ)的下降以及QB-非还原性反应PS Ⅱ反应中心的相对含量上升程度也较小。探讨了盐胁迫增强杂交酸模幼苗叶片PS Ⅱ耐热性的可能机理。

引用

页码：345 / 350

页数：6

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