Pervasive translational control of photosynthesis genes during photomorphogenesis is acquired by C 4 genes
Pervasive translational control of photosynthesis genes during photomorphogenesis is acquired by C 4 genes
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光形态发生过程中光合作用基因的普遍翻译控制是由 C 4 基因获得的
DOI：
10.1101/2023.10.27.563924
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Reyna-Llorens I
中科院分区：
文献类型：
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作者：
Reyna-Llorens I
C4光合作用可以提高效率，并在超过66种植物谱系中进化。支持这种重复出现的C4途径是一个主要的光合作用基因的转录重编程。在这里，我们调查是否进化也显着修改翻译控制定义的翻译动力学的C3水稻和C4高粱在光形态建成。在黑暗水稻光合作用转录本低丰度，但高度翻译。暴露于光后，翻译效率下降。同样的现象也发生在高粱中，但另外C4循环基因也显示了这种反应。我们提出了一个模型，在该模型中，光合作用基因的翻译控制允许对光的快速响应，并且这种翻译调节是在C4途径的进化过程中由C4基因获得的。
C4photosynthesis allows increased efficiency and has evolved in more than sixty-six plant lineages. Underpinning this repeated appearance of the C4pathway is a major transcriptional reprogramming of photosynthesis genes. Here we investigated whether evolution has also significantly modified translational control by defining the translational dynamics of C3rice and C4sorghum during photomorphogenesis. In the dark rice photosynthesis transcripts are low abundance but highly translated. After exposure to light translational efficiency declines. The same phenomena occur in sorghum but in addition C4cycle genes show this response. We propose a model in which translational control of photosynthesis genes permits a rapid response to light and that this translational regulation is gained by C4genes during the evolution of the C4pathway.