A chloroplast retrograde signal regulates nuclear alternative splicing.
A chloroplast retrograde signal regulates nuclear alternative splicing.
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DOI：
10.1126/science.1250322
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发表时间：
2014-04-25
期刊：
影响因子：
--
通讯作者：
Kornblihtt AR
中科院分区：
文献类型：
--
作者：
Petrillo E;Godoy Herz MA;Fuchs A;Reifer D;Fuller J;Yanovsky MJ;Simpson C;Brown JW;Barta A;Kalyna M;Kornblihtt AR
Light is a source of energy and also a regulator of plant physiological adaptations. We show here that light/dark conditions affect alternative splicing of a subset of Arabidopsis genes preferentially encoding proteins involved in RNA processing. The effect requires functional chloroplasts and is also observed in roots when the communication with the photosynthetic tissues is not interrupted, suggesting that a signaling molecule travels through the plant. Using photosynthetic electron transfer inhibitors with different mechanisms of action we deduce that the reduced pool of plastoquinones initiates a chloroplast retrograde signaling that regulates nuclear alternative splicing and is necessary for proper plant responses to varying light conditions.
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