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Research progress in regulating seed weight through lipid metabolism pathways

• 1、Hebei Agricultural University, Baoding 071000

Abstract：Maize (Zea mays L.) is an important grain, feed and cash crop in China. Its planting area and output are both in the first place in China\'s grain output, playing a vital role in China\'s economic development and food security. 100-kernel weight (KW) is a quantitative trait regulated by multiple genes and an important determinant of yield. Therefore, the study of genetic and molecular regulation of KW is the most economical and effective way to improve maize yield. Lipid metabolism affects cell apoptosis by regulating RIP and Prx inhibition of ROS accumulation, as well as regulating cell elongation through PA and DAG mediated IAA signaling. Therefore, lipid metabolism determines the size, fate, and nutrient accumulation of endosperm cells, ultimately determining maize kernel weight. This article focuses on the research progress of lipid metabolism mediated cell apoptosis and cell elongation regulation of maize kernel weight, in order to provide genes for genetic research of maize kernel weight and new pathways and resources for molecular breeding of KW maize.

Keywords： Maize Seed weight Lipid metabolism