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UDP-glucosyltransferase71c5, a major glucosyltransferase, mediates abscisic acid homeostasis in Arabidopsis.
Liu, Zhen; Yan, Jin-Ping; Li, De-Kuan; Luo, Qin; Yan, Qiujie; Liu, Zhi-Bin; Ye, Li-Ming; Wang, Jian-Mei; Li, Xu-Feng; Yang, Yi.
Affiliation
  • Liu Z; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Yan JP; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Li DK; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Luo Q; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Yan Q; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Liu ZB; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Ye LM; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Wang JM; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Li XF; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
  • Yang Y; Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Sichuan 610064, China (Z.L., J.-P.Y., D.-K.L., Q.L., Q.Y., Z.-B.L., J.-M.W., X.-F.L., Y.Y.);State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Universit
Plant Physiol ; 167(4): 1659-70, 2015 Apr.
Article in En | MEDLINE | ID: mdl-25713337
Abscisic acid (ABA) plays a key role in plant growth and development. The effect of ABA in plants mainly depends on its concentration, which is determined by a balance between biosynthesis and catabolism of ABA. In this study, we characterize a unique UDP-glucosyltransferase (UGT), UGT71C5, which plays an important role in ABA homeostasis by glucosylating ABA to abscisic acid -: glucose ester (GE) in Arabidopsis (Arabidopsis thaliana). Biochemical analyses show that UGT71C5 glucosylates ABA in vitro and in vivo. Mutation of UGT71C5 and down-expression of UGT71C5 in Arabidopsis cause delay in seed germination and enhanced drought tolerance. In contrast, overexpression of UGT71C5 accelerates seed germination and reduces drought tolerance. Determination of the content of ABA and ABA-GE in Arabidopsis revealed that mutation in UGT71C5 and down-expression of UGT71C5 resulted in increased level of ABA and reduced level of ABA-GE, whereas overexpression of UGT71C5 resulted in reduced level of ABA and increased level of ABA-GE. Furthermore, altered levels of ABA in plants lead to changes in transcript abundance of ABA-responsive genes, correlating with the concentration of ABA regulated by UGT71C5 in Arabidopsis. Our work shows that UGT71C5 plays a major role in ABA glucosylation for ABA homeostasis.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Plant Growth Regulators / Arabidopsis / Abscisic Acid / Gene Expression Regulation, Plant / Arabidopsis Proteins / Glucosyltransferases Language: En Journal: Plant Physiol Year: 2015 Document type: Article Country of publication:
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Plant Growth Regulators / Arabidopsis / Abscisic Acid / Gene Expression Regulation, Plant / Arabidopsis Proteins / Glucosyltransferases Language: En Journal: Plant Physiol Year: 2015 Document type: Article Country of publication: