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CYTOKININ RESPONSE FACTOR2 (CRF2) and CRF3 Regulate Lateral Root Development in Response to Cold Stress in Arabidopsis

The Plant cell, 2016-08, Vol.28 (8), p.1828-1843 [Peer Reviewed Journal]

2016 American Society of Plant Biologists ;2016 American Society of Plant Biologists. All rights reserved. ;2016 American Society of Plant Biologists. All rights reserved. 2016 ;ISSN: 1040-4651 ;EISSN: 1532-298X ;DOI: 10.1105/tpc.15.00909 ;PMID: 27432872

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Title:
CYTOKININ RESPONSE FACTOR2 (CRF2) and CRF3 Regulate Lateral Root Development in Response to Cold Stress in Arabidopsis
Author: Jeon, Jin ; Cho, Chuloh ; Lee, Mi Rha ; Van Binh, Nguyen ; Kim, Jungmook
Subjects: Arabidopsis ; Arabidopsis - genetics ; Arabidopsis - growth & development ; Arabidopsis - metabolism ; Arabidopsis Proteins - genetics ; Arabidopsis Proteins - metabolism ; Arabidopsis thaliana ; Cold Temperature ; Development ; DNA binding proteins ; Gene Expression Regulation, Plant - genetics ; Gene Expression Regulation, Plant - physiology ; Genetic aspects ; Growth ; Homeodomain Proteins - genetics ; Homeodomain Proteins - metabolism ; Nuclear Proteins - genetics ; Nuclear Proteins - metabolism ; Physiological aspects ; Plant Roots - genetics ; Plant Roots - growth & development ; Plant Roots - metabolism ; Plants ; Signal Transduction - genetics ; Signal Transduction - physiology ; Transcription Factors - genetics ; Transcription Factors - metabolism
Is Part Of: The Plant cell, 2016-08, Vol.28 (8), p.1828-1843
Description: Lateral roots (LRs) are a major determinant of the root system architecture in plants, and developmental plasticity of LR formation is critical for the survival of plants in changing environmental conditions. In Arabidopsis thaliana, genetic pathways have been identified that regulate LR branching in response to numerous environmental cues, including some nutrients, salt, and gravity. However, it is not known how genetic components are involved in the LR adaptation response to cold. Here, we demonstrate that CYTOKININ RESPONSE FACTOR2 (CRF2) and CRF3, encoding APETALA2 transcription factors, play an important role in regulating Arabidopsis LR initiation under cold stress. Analysis of LR developmental kinetics demonstrated that both CRF2 and CRF3 regulate LR initiation. crf2 and crf3 single mutants exhibited decreased LR initiation under cold stress compared with the wild type, and the crf2 crf3 double mutants showed additively decreased LR densities compared with the single mutants. Conversely, CRF2 or CRF3 overexpression caused increased LR densities. CRF2 was induced by cold via a subset of the cytokinin two-component signaling (TCS) pathway, whereas CRF3 was upregulated by cold via TCS-independent pathways. Our results suggest that CRF2 and CRF3 respond to cold via TCS-dependent and TCS-independent pathways and control LR initiation and development, contributing to LR adaptation to cold stress.
Publisher: England: American Society of Plant Biologists
Language: English
Identifier: ISSN: 1040-4651
EISSN: 1532-298X
DOI: 10.1105/tpc.15.00909
PMID: 27432872
Source: GFMER Free Medical Journals
MEDLINE

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CYTOKININ RESPONSE FACTOR2 (CRF2) and CRF3 Regulate Lateral Root Development in Response to Cold Stress in Arabidopsis

2016 American Society of Plant Biologists ;2016 American Society of Plant Biologists. All rights reserved. ;2016 American Society of Plant Biologists. All rights reserved. 2016 ;ISSN: 1040-4651 ;EISSN: 1532-298X ;DOI: 10.1105/tpc.15.00909 ;PMID: 27432872

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