The patatin-containing phospholipase A pPLAIIα modulates oxylipin formation and water loss in Arabidopsis thaliana

K-REx Repository

Show simple item record

dc.contributor.author Yang, Wenyu
dc.contributor.author Zheng, Yong
dc.contributor.author Bahn, Sung Chul
dc.contributor.author Pan, Xiangqing
dc.contributor.author Li, Maoyin
dc.contributor.author Vu, Hieu Sy
dc.contributor.author Roth, Mary R.
dc.contributor.author Scheu, Brad
dc.contributor.author Welti, Ruth
dc.contributor.author Wang, Xuemin
dc.date.accessioned 2012-05-21T14:26:04Z
dc.date.available 2012-05-21T14:26:04Z
dc.date.issued 2012-05-21
dc.identifier.uri http://hdl.handle.net/2097/13840
dc.description.abstract The patatin-related phospholipase A (pPLA) hydrolyzes membrane glycerolipids to produce monoacyl compounds and free fatty acids. Phospholipids are cleaved by pPLAIIα at the sn-1 and sn-2 positions, and galactolipids, including those containing oxophytodienoic acids, can also serve as substrates. Ablation of pPLAIIα decreased lysophosphatidylcholine and lysophosphatidylethanolamine levels, but increased free linolenic acid. pPLAIIα-deficient plants displayed a higher level of jasmonic acid and methyl jasmonate, as well as the oxylipin-biosynthetic intermediates 13-hydroperoxylinolenic acid and 12-oxophytodienoic acid than wild-type plants. The expression of genes involved in oxylipin production was also higher in the pPLAIIα-deficient mutant than in wild-type plants. The mutant plants lost water faster than wild type plants did. The stomata of wild type and mutant plants responded similarly to abscisic acid. In response to desiccation, the mutant and wild type leaves produced abscisic acid at the same rate, but after 4 h of desiccation, the jasmonic acid level was much higher in mutant than wild-type leaves. These results indicate that pPLAIIα negatively regulates oxylipin production and suggest a role in the removal of oxidatively modified fatty acids from membranes. en_US
dc.relation.uri http://mplant.oxfordjournals.org/content/5/2/452.full en_US
dc.rights This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Molecular Plant following peer review. The definitive publisher-authenticated version Yang, W., Zheng, Y., Bahn, S. C., Pan, X., Li, M., Vu, H. S., . . . Wang, X. (2012). The patatin-containing phospholipase A pPLAIIα modulates oxylipin formation and water loss in Arabidopsis thaliana. Molecular Plant, 5(2), 452-460. is available online at: http://mplant.oxfordjournals.org/content/5/2/452.full en_US
dc.subject Patatin-related phospholipase A en_US
dc.subject Oxidative modified lipids en_US
dc.subject Jasmonate synthesis en_US
dc.subject Water loss en_US
dc.subject Arabidopsis thaliana en_US
dc.title The patatin-containing phospholipase A pPLAIIα modulates oxylipin formation and water loss in Arabidopsis thaliana en_US
dc.type Article (author version) en_US
dc.date.published 2012 en_US
dc.citation.doi doi:10.1093/mp/ssr118 en_US
dc.citation.epage 460 en_US
dc.citation.issue 2 en_US
dc.citation.jtitle Molecular Plant en_US
dc.citation.spage 452 en_US
dc.citation.volume 5 en_US
dc.contributor.authoreid welti en_US
dc.contributor.authoreid mrroth en_US

Files in this item


Files Size Format View

This item appears in the following Collection(s)

Show simple item record