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WRINKLED1 (WRI1) belongs to AP2/EREBP transcription factor. Its function in dicots for fatty acids synthesis has been deeply studied, but its role in monocot, especially in rice, is still poorly understood. Here, with the overexpression of AtWRI1 in rice, we found its overexpression increased fatty acids content in vegetative organs and seed coat including aleurone layer (SCAL) but decreased fatty acids content in endosperm. Meanwhile, the overexpression of AtWRI1 increased starch content in endosperm. These results provide a new insight into the function of AtWRI1in monocot and make a previous basement for the study of the connection of fatty acids and starch synthesis in rice.

Characterization of AtWRI1 in fatty acids and starch synthesis in rice