Linked Life Data

21447788

Source:http://linkedlifedata.com/resource/pubmed/id/21447788

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2011-4-27
pubmed:abstractText
The release of fatty acids from membrane lipids has been implicated in various plant processes, and the patatin-related phospholipases (pPLAs) constitute a major enzyme family that catalyzes fatty acid release. The Arabidopsis thaliana pPLA family has 10 members that are classified into three groups. Group 3 pPLAIII has four members but lacks the canonical lipase/esterase consensus catalytic sequences, and their enzymatic activity and cellular functions have not been delineated. Here, we show that pPLAIII? hydrolyzes phospholipids and galactolipids and additionally has acyl-CoA thioesterase activity. Alterations of pPLAIII? result in changes in lipid levels and composition. pPLAIII?-KO plants have longer leaves, petioles, hypocotyls, primary roots, and root hairs than wild-type plants, whereas pPLAIII?-OE plants exhibit the opposite phenotype. In addition, pPLAIII?-OE plants have significantly lower cellulose content and mechanical strength than wild-type plants. Root growth of pPLAIII?-KO plants is less sensitive to treatment with free fatty acids, the enzymatic products of pPLAIII?, than wild-type plants; root growth of pPLAIII?-OE plants is more sensitive. These data suggest that alteration of pPLAIII? expression and the resulting lipid changes alter cellulose content and cell elongation in Arabidopsis.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1532-298X
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1107-23
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Patatin-related phospholipase pPLAIII?-induced changes in lipid metabolism alter cellulose content and cell elongation in Arabidopsis.
pubmed:affiliation
Department of Biology, University of Missouri, St. Louis, Missouri 63121, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural