期刊
JOURNAL OF LIPID RESEARCH
卷 53, 期 2, 页码 215-226出版社
ELSEVIER
DOI: 10.1194/jlr.R021436
关键词
endoplasmic reticulum; lipids; membranes; phospholipids; lipid storage; plant
资金
- US Department of Energy, Office of Science (BER) [DE-SC0000797]
- U.S. Department of Energy (DOE) [DE-SC0000797] Funding Source: U.S. Department of Energy (DOE)
The compartmentation of neutral lipids in plants is mostly associated with seed tissues, where triacylglycerols (TAGs) stored within lipid droplets (LDs) serve as an essential physiological energy and carbon reserve during postgerminative growth. However, some nonseed tissues, such as leaves, flowers and fruits, also synthesize and store TAGs, yet relatively little is known about the formation or function of LDs in these tissues. Characterization of LD-associated proteins, such as oleosins, caleosins, and sterol dehydrogenases (steroleosins), has revealed surprising features of LD function in plants, including stress responses, hormone signaling pathways, and various aspects of plant growth and development. Although oleosin and caleosin proteins are specific to plants, LD-associated sterol dehydrogenases also are present in mammals, and in both plants and mammals these enzymes have been shown to be important in (steroid) hormone metabolism and signaling. In addition, several other proteins known to be important in LD biogenesis in yeasts and mammals are conserved in plants, suggesting that at least some aspects of LD biogenesis and/or function are evolutionarily conserved.-Chapman, K.D., J.M. Dyer, and R. T. Mullen. Biogenesis and functions of lipid droplets in plants. J. Lipid Res. 2012. 53: 215-226.
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