хлоропластATP合成酶在番茄的波动光下限制光合作用,但在玉米中没有
Yi-Yun Li1, Xiao-Qian Wang2, Ying-Jie Yang3
1Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Plant physiology and biochemistry : PPB
|September 11, 2024
概括
叶绿体ATP合成酶活性 (gH+) 对于动态光合作用至关重要. 它的动力学在番茄和玉米之间有所不同,这表明它是.
科学领域:
- 植物生理学 植物生理学
- 光合作用研究研究 光合作用研究
- 农作物科学 农作物科学
背景情况:
- 动态光合作用需要协调调整扩散导电量和生物化学容量.
- 质细胞ATP合成酶活性 (gH+) 在波动光光合作用中的作用尚不清楚.
研究的目的:
- 研究质细胞ATP合成酶活性 (gH+) 在茄和玉米在波动光线条件下的动态光合作用中的作用.
- 为了比较番茄和玉米之间在阳光和阴影之间过渡期间的gH+,气体交换和叶绿素光的反应.
主要方法:
- 在波动的光线中测量气体交换,叶绿素光和电色转移信号.
- 分析番茄 (Solanum lycopersicum) 和玉米 (Zea mays) 在阳光到阴影和阴影到阳光的过渡期间的叶子反应.
主要成果:
- 在番茄中,gH+在阳光到阴影过渡期间限制了净CO2同化 (AN),而在玉米中,AN主要受到口腔导电的限制.
- 在阴影到阳光的过渡过程中,番茄的gH+,口腔导电性,中导电性和Rubisco碳氧化能力一起增加,表明gH+影响光感应.
- 玉米保持高gH+水平,AN主要受到口腔导电性的限制.
结论:
- 叶绿体ATP合成酶活性 (gH+) 在波动光的动力学在番茄和玉米之间显著不同.
- 叶绿体ATP合成酶是一个被忽视的因素,影响番茄光合作用的光诱导,并代表了改善作物的动态光合作用的潜在目标.
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