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Article: Arabidopsis acyl-CoA-binding proteins ACBP1 and ACBC2 show different roles in freezing stress

TitleArabidopsis acyl-CoA-binding proteins ACBP1 and ACBC2 show different roles in freezing stress
Authors
KeywordsAcyl-CoA-binding protein
Freezing tolerance
Phosphatidic acid-binding
Lipid profiling
Issue Date2010
PublisherLandes Bioscience. The Journal's web site is located at http://www.landesbioscience.com/journals/psb
Citation
Plant Signalling & Behavior, 2010, v. 5 n. 5, p. 607-609 How to Cite?
AbstractIn our recent paper in Plant Physiology, we reported that recombinant Arabidopsis thaliana acyl-CoA-binding protein ACBP1 binds phosphatidic acid (PA) in vitro and acbp1 mutant plants are conferred freezing tolerance. ACBP1-overexpressors were freezing sensitive and accumulated more PA, in contrast to acbp1 mutants which had reduced PA and elevated PC levels. Such changes in PC and PA were consistent with the expression of the mRNA encoding phospholipase Dalpha1 (PLDalpha1), a major enzyme that promotes the hydrolysis of PC to PA. In contrast, the expression of phospholipase Ddelta (PLDdelta), which plays a positive role in freezing tolerance, was upregulated in acbp1 mutants and downregulated in ACBP1-overexpressors. Reduced PLDgamma1 expression and decreased hydrolysis of PC to PA may have enhanced membrane stability in the acbp1 mutants. Given the PA- and acyl-CoA-binding abilities of ACBP1, the expression of PLDgamma1 and PLDdelta could be subject to regulation by PA or acyl-CoA esters maintained by ACBP1, if ACBP1 were to resemble the yeast 10-kD ACBP in modulating gene expression during stress responses. Interestingly, another membrane-associated ACBP, ACBP2, which shows high (76.9%) conservation in amino acid homology to ACBP1, did not appear to be involved in the freezing response.
Persistent Identifierhttp://hdl.handle.net/10722/160579
ISSN
2015 SCImago Journal Rankings: 0.633

 

DC FieldValueLanguage
dc.contributor.authorDu, ZYen_US
dc.contributor.authorXiao, Sen_US
dc.contributor.authorChen, QFen_US
dc.contributor.authorChye, MLen_US
dc.date.accessioned2012-08-16T06:14:45Z-
dc.date.available2012-08-16T06:14:45Z-
dc.date.issued2010en_US
dc.identifier.citationPlant Signalling & Behavior, 2010, v. 5 n. 5, p. 607-609en_US
dc.identifier.issn1559-2316-
dc.identifier.urihttp://hdl.handle.net/10722/160579-
dc.description.abstractIn our recent paper in Plant Physiology, we reported that recombinant Arabidopsis thaliana acyl-CoA-binding protein ACBP1 binds phosphatidic acid (PA) in vitro and acbp1 mutant plants are conferred freezing tolerance. ACBP1-overexpressors were freezing sensitive and accumulated more PA, in contrast to acbp1 mutants which had reduced PA and elevated PC levels. Such changes in PC and PA were consistent with the expression of the mRNA encoding phospholipase Dalpha1 (PLDalpha1), a major enzyme that promotes the hydrolysis of PC to PA. In contrast, the expression of phospholipase Ddelta (PLDdelta), which plays a positive role in freezing tolerance, was upregulated in acbp1 mutants and downregulated in ACBP1-overexpressors. Reduced PLDgamma1 expression and decreased hydrolysis of PC to PA may have enhanced membrane stability in the acbp1 mutants. Given the PA- and acyl-CoA-binding abilities of ACBP1, the expression of PLDgamma1 and PLDdelta could be subject to regulation by PA or acyl-CoA esters maintained by ACBP1, if ACBP1 were to resemble the yeast 10-kD ACBP in modulating gene expression during stress responses. Interestingly, another membrane-associated ACBP, ACBP2, which shows high (76.9%) conservation in amino acid homology to ACBP1, did not appear to be involved in the freezing response.-
dc.languageengen_US
dc.publisherLandes Bioscience. The Journal's web site is located at http://www.landesbioscience.com/journals/psb-
dc.relation.ispartofPlant Signalling & Behavioren_US
dc.subjectAcyl-CoA-binding protein-
dc.subjectFreezing tolerance-
dc.subjectPhosphatidic acid-binding-
dc.subjectLipid profiling-
dc.titleArabidopsis acyl-CoA-binding proteins ACBP1 and ACBC2 show different roles in freezing stressen_US
dc.typeArticleen_US
dc.identifier.emailXiao, S: sxiao@hku.hken_US
dc.identifier.emailChye, ML: mlchye@hkucc.hku.hken_US
dc.identifier.authorityXiao, S=rp00817en_US
dc.identifier.authorityChye, ML=rp00687en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.pmid20404541-
dc.identifier.scopuseid_2-s2.0-77955000535-
dc.identifier.hkuros203499en_US
dc.identifier.volume5-
dc.identifier.issue5-
dc.identifier.spage607-
dc.identifier.epage609-
dc.publisher.placeUnited States-

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