A plant microRNA regulates the adaptation of roots to drought stress

Hao Chen; Zhuofu Li; Liming Xiong

doi:10.1016/j.febslet.2012.05.013

A plant microRNA regulates the adaptation of roots to drought stress

Hao Chen, Zhuofu Li, Liming Xiong

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113 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1742-1747
Number of pages	6
Journal	FEBS Letters
Volume	586
Issue number	12
DOIs	https://doi.org/10.1016/j.febslet.2012.05.013
State	Published - May 18 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.

ASJC Scopus subject areas

Biochemistry
Structural Biology
Cell Biology
Genetics
Molecular Biology
Biophysics

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10.1016/j.febslet.2012.05.013

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title = "A plant microRNA regulates the adaptation of roots to drought stress",

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. {\textcopyright} 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.",

author = "Hao Chen and Zhuofu Li and Liming Xiong",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.",

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T1 - A plant microRNA regulates the adaptation of roots to drought stress

AU - Chen, Hao

AU - Li, Zhuofu

AU - Xiong, Liming

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.

PY - 2012/5/18

Y1 - 2012/5/18

N2 - 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.

AB - 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.

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UR - http://doi.wiley.com/10.1016/j.febslet.2012.05.013

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DO - 10.1016/j.febslet.2012.05.013

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EP - 1747

JO - FEBS Letters

JF - FEBS Letters

IS - 12

ER -

A plant microRNA regulates the adaptation of roots to drought stress

Abstract

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ASJC Scopus subject areas

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