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Lipid Profiling Demonstrates That Suppressing Arabidopsis Phospholipase D delta Retards ABA-Promoted Leaf Senescence by Attenuating Lipid Degradation
Jia, Yanxia1,3; Tao, Faqing2; Li, Weiqi1,2
2013-06-07
发表期刊PLOS ONE
ISSN1932-6203
卷号8期号:6页码:e65687
摘要Senescence is the last phase of the plant life cycle and has an important role in plant development. Degradation of membrane lipids is an essential process during leaf senescence. Several studies have reported fundamental changes in membrane lipids and phospholipase D (PLD) activity as leaves senesce. Suppression of phospholipase D alpha 1 (PLD alpha 1) retards abscisic acid (ABA)-promoted senescence. However, given the absence of studies that have profiled changes in the compositions of membrane lipid molecules during leaf senescence, there is no direct evidence that PLD affects lipid composition during the process. Here, we show that application of n-butanol, an inhibitor of PLD, and N-Acylethanolamine (NAE) 12:0, a specific inhibitor of PLD alpha 1, retarded ABA-promoted senescence to different extents. Furthermore, phospholipase D delta (PLD delta) was induced in leaves treated with ABA, and suppression of PLD delta retarded ABA-promoted senescence in Arabidopsis. Lipid profiling revealed that detachment-induced senescence had different effects on plastidic and extraplastidic lipids. The accelerated degradation of plastidic lipids during ABA-induced senescence in wild-type plants was attenuated in PLD delta-knockout (PLD delta-KO) plants. Dramatic increases in phosphatidic acid (PA) and decreases in phosphatidylcholine (PC) during ABA-induced senescence were also suppressed in PLD delta-KO plants. Our results suggest that PLD delta-mediated hydrolysis of PC to PA plays a positive role in ABA-promoted senescence. The attenuation of PA formation resulting from suppression of PLD delta blocks the degradation of membrane lipids, which retards ABA-promoted senescence.
关键词Phosphatidic-acid Plasma-membrane D-alpha Microsomal-membranes Carnation Flowers Tobacco Plants d Activation Pld-delta Thaliana Metabolism
资助信息National Natural Science Foundation of China [NSFC 30670474, 30870571, 31070262]; Fund of State Key Laboratory of Phytochemistry and Plant Resources in West China [0807B01211, 097C1211Z1]; Kunming Institute of Botany [KSCX2-EW-J-24]; Germplasm Bank of Wild Species; CAS Innovation Program of Kunming Institute, 100-Talents Program of CAS [540806321211]
学科领域Multidisciplinary Sciences
收录类别SCI
语种英语
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000321094800069
引用统计
被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/16869
专题中国西南野生生物种质资源库
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
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Jia, Yanxia,Tao, Faqing,Li, Weiqi. Lipid Profiling Demonstrates That Suppressing Arabidopsis Phospholipase D delta Retards ABA-Promoted Leaf Senescence by Attenuating Lipid Degradation[J]. PLOS ONE,2013,8(6):e65687.
APA Jia, Yanxia,Tao, Faqing,&Li, Weiqi.(2013).Lipid Profiling Demonstrates That Suppressing Arabidopsis Phospholipase D delta Retards ABA-Promoted Leaf Senescence by Attenuating Lipid Degradation.PLOS ONE,8(6),e65687.
MLA Jia, Yanxia,et al."Lipid Profiling Demonstrates That Suppressing Arabidopsis Phospholipase D delta Retards ABA-Promoted Leaf Senescence by Attenuating Lipid Degradation".PLOS ONE 8.6(2013):e65687.
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