文献类型： 外文期刊
第一作者： Zhou, Xin
作者： Zhou, Xin;Chen, Xiaobing;Zhou, Xin;Chen, Xiaobing;Zhou, Xin;Chen, Xiaobing;Kong, Xiangrui;Chen, Changsong;Zhou, Xin;Chen, Xiaobing;Du, Zhenghua;Zhang, Yi;Zhang, Wenjing;Chen, Mingjie;Thelen, Jay J.
作者机构：
关键词： Camellia sinensis; lipid droplets; neutral lipids; sterol esters; triterpenoid esters; CsPSAT1; CsHMGRs; CsAST1
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2019 年 10 卷
页码：
收录情况： SCI
摘要： Lipid droplets (LDs) have been widely found from diverse species and exhibit diverse functions. It remains unexplored what potential roles they played in tea. To address this question, we analyzed the chemical composition and the dynamic changes of cytosolic LDs during leaf growth and diurnal cycle. Using TopFluor cholesterol and Nile Red staining we demonstrated that cytosolic LDs were heterogeneous in tea tree (Camellia sinensis cv. Tieguanyin); the size and number of LDs increased with leaf growth. Compositional analysis showed that terpenoid esters and diacylglycerol are the major components of cytosolic LDs. The contents of total sterol esters (SEs) and beta-amyrin esters increased with leaf expansion and growth; individual SE also showed diurnal changes. Our data suggest that cytosolic LDs from tea tree leave mainly serve as storage site for free sterols and triterpenoids in the form of esters. Cytosolic LDs were not the major contributors to the aroma quality of made tea.
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