A plant microRNA regulates the adaptation of roots to drought stress

Handle URI:
http://hdl.handle.net/10754/561405
Title:
A plant microRNA regulates the adaptation of roots to drought stress
Authors:
Chen, Hao; Li, Zhuofu; Xiong, Liming ( 0000-0001-8099-0806 )
Abstract:
Plants tend to restrict their horizontal root proliferation in response to drought stress, an adaptive response mediated by the phytohormone abscisic acid (ABA) in antagonism with auxin through unknown mechanisms. Here, we found that stress-regulated miR393-guided cleavage of the transcripts encoding two auxin receptors, TIR1 and AFB2, was required for inhibition of lateral root growth by ABA or osmotic stress. Unlike in the control plants, the lateral root growth of seedlings expressing miR393-resistant TIR1 or AFB2 was no longer inhibited by ABA or osmotic stress. Our results indicate that miR393-mediated attenuation of auxin signaling modulates root adaptation to drought stress. © 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program; Plant Stress Genomics Research Lab
Publisher:
Elsevier
Journal:
FEBS Letters
Issue Date:
Jun-2012
DOI:
10.1016/j.febslet.2012.05.013
PubMed ID:
22613571
Type:
Article
ISSN:
00145793
Sponsors:
This study was supported by the National Science Foundation (Grant #0446359) and USDA-NRI (Grant #2004-02111) (to L.X.) and partially by faculty startup funds from KAUST (to L.X.). The authors thank Dr. Zhenyu Wang for technical assistance.
Appears in Collections:
Articles; Bioscience Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Haoen
dc.contributor.authorLi, Zhuofuen
dc.contributor.authorXiong, Limingen
dc.date.accessioned2015-08-03T09:56:16Zen
dc.date.available2015-08-03T09:56:16Zen
dc.date.issued2012-06en
dc.identifier.issn00145793en
dc.identifier.pmid22613571en
dc.identifier.doi10.1016/j.febslet.2012.05.013en
dc.identifier.urihttp://hdl.handle.net/10754/561405en
dc.description.abstractPlants tend to restrict their horizontal root proliferation in response to drought stress, an adaptive response mediated by the phytohormone abscisic acid (ABA) in antagonism with auxin through unknown mechanisms. Here, we found that stress-regulated miR393-guided cleavage of the transcripts encoding two auxin receptors, TIR1 and AFB2, was required for inhibition of lateral root growth by ABA or osmotic stress. Unlike in the control plants, the lateral root growth of seedlings expressing miR393-resistant TIR1 or AFB2 was no longer inhibited by ABA or osmotic stress. Our results indicate that miR393-mediated attenuation of auxin signaling modulates root adaptation to drought stress. © 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThis study was supported by the National Science Foundation (Grant #0446359) and USDA-NRI (Grant #2004-02111) (to L.X.) and partially by faculty startup funds from KAUST (to L.X.). The authors thank Dr. Zhenyu Wang for technical assistance.en
dc.publisherElsevieren
dc.subjectAbscisic aciden
dc.subjectAuxinen
dc.subjectLateral rooten
dc.subjectMicroRNAen
dc.subjectOsmotic stressen
dc.titleA plant microRNA regulates the adaptation of roots to drought stressen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentBioscience Programen
dc.contributor.departmentPlant Stress Genomics Research Laben
dc.identifier.journalFEBS Lettersen
dc.contributor.institutionDonald Danforth Plant Science Center, St. Louis, MO 63132, United Statesen
kaust.authorLi, Zhuofuen
kaust.authorXiong, Limingen
kaust.authorChen, Haoen

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