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首页> 外文期刊>Biochemistry >The Size of the Light-Harvesting Antenna of Higher Plant Photosystem II Is Regulated by Illumination Intensity through Transcription of Antenna Protein Genes
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The Size of the Light-Harvesting Antenna of Higher Plant Photosystem II Is Regulated by Illumination Intensity through Transcription of Antenna Protein Genes

机译:高等植物光系统II的光收集天线的大小由天线蛋白基因的转录强度决定。

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摘要

In arabidopsis plants, with an increase in illumination intensity during growth the extent of reduction of the plas-toquinone pool in the photosynthetic electron transport chain increased, whereas the effective quantum yield of photosynthesis decreased. After 5 days of growth under high illumination intensity, these parameters in high light returned to values observed in "shade-adapted" plants in low light. During the same period, the size of the antenna decreased, correlating with a decrease in the amounts of proteins of peripheral pigment-protein complexes. It was found that the decrease in the amounts of these proteins occurred due to suppression of transcription of their genes.
机译:在拟南芥植物中,随着生长过程中光照强度的增加,光合作用电子传输链中质体-醌醌池的减少程度增加,而光合作用的有效量子产率却降低。在高光照强度下生长5天后,强光下的这些参数返回到在弱光下“适应阴影”的植物中观察到的值。在同一时期,天线的尺寸减小,与周围色素-蛋白质复合物的蛋白质含量减少有关。发现这些蛋白质的量的减少是由于其基因转录的抑制而发生的。

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