NDLI: Quantitative dissection of lipid degradation in rice seeds during accelerated aging

Content Provider	Springer Nature Link
Author	Wang, Fawei Wang, Rong Jing, Wen Zhang, Wenhua
Copyright Year	2011
Abstract	Aging during storage negatively affects rice seed viability and nutrition quality. Lipid degradation caused by phospholipase D (PLD) activity is known to be responsible for seed deterioration in Arabidopsis, but the mechanisms of this process in monocotyledonous plant rice remain unclear. In this study, we carried out lipid profiling analysis for rice seeds, and found that the main membrane lipids phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylglycerol (PG) declined during accelerated aging. In contrast, phosphatidic acid (PA), a hydrolysis product produced by PLD, increased. Interestingly, the degree of PA increase induced by accelerated aging (at 2 days) was much higher in rice than that in Arabidopsis (200% vs. 30%). Moreover, the decreased molecular species in PC and PE were well fit with those that were increased in PA, suggesting that PA may be derived from PLD-mediated lipid hydrolysis. OsPLDα1 and α3 were the major PLDαs in rice seeds, and their transcription increased significantly during the aging process. The aging treatment induced OsPLDα protein expression and activation. Three lipoxygenases (LOXs) were analyzed, and OsLOX2 transcription was induced significantly during seed aging. Our results reveal detailed information regarding lipid degradation during rice seed aging, and we go on to discuss the relationship between lipid degradation and peroxidation during seed aging.
Starting Page	49
Ending Page	58
Page Count	10
File Format	PDF
ISSN	01676903
Journal	Plant Growth Regulation
Volume Number	66
Issue Number	1
e-ISSN	15735087
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-10-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Accelerated aging Lipid profiling Phospholipase D Lipoxygenase Plant Physiology Plant Anatomy/Development Plant Sciences Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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