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Literature DB >> 23518585

DAR2 acts as an important node connecting cytokinin, auxin, SHY2 and PLT1/2 in root meristem size control.

Yuancheng Peng¹, Liangliang Chen, Yaru Lu, Wenying Ma, Yiping Tong, Yunhai Li.

Abstract

Cytokinin and auxin antagonistically affect cell proliferation and differentiation and thus regulate root meristem size by influencing the abundance of SHORT HYPOCOTYL2 (SHY2/IAA3). SHY2 affects auxin distribution in the root meristem by repressing the auxin-inducible expression of PIN-FORMED (PIN) auxin transport genes. The PLETHORA (PLT1/2) genes influence root meristem growth by promoting stem cells and transit-amplifying cells. However, the factors connecting cytokinin, auxin, SHY2 and PLT1/2 are largely unknown. In a recent study, we have shown that the DA1-related protein 2 (DAR2) acts downstream of cytokinin and SHY2 but upstream of PLT1/2 to affect root meristem size. Here, we discuss the possible molecular mechanisms by which Arabidopsis DAR2 controls root meristem size.

Entities: Gene Species

Keywords: DAR2; auxin; cytokinin; root meristem size; stem cell niche activity

Mesh：

Substances：

Year: 2013 PMID： 23518585 PMCID： PMC3907457 DOI： 10.4161/psb.24226

Source DB: PubMed Journal: Plant Signal Behav ISSN： 1559-2316

19 in total

Review 1. Root apex transition zone: a signalling-response nexus in the root.

Authors: Frantisek Baluska; Stefano Mancuso; Dieter Volkmann; Peter W Barlow
Journal: Trends Plant Sci Date: 2010-06-02 Impact factor: 18.313

2. The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots.

Authors: Ikram Blilou; Jian Xu; Marjolein Wildwater; Viola Willemsen; Ivan Paponov; Jirí Friml; Renze Heidstra; Mitsuhiro Aida; Klaus Palme; Ben Scheres
Journal: Nature Date: 2005-01-06 Impact factor: 49.962

3. The Root Apex of Arabidopsis thaliana Consists of Four Distinct Zones of Growth Activities: Meristematic Zone, Transition Zone, Fast Elongation Zone and Growth Terminating Zone.

Authors: Jean-Pierre Verbelen; Tinne De Cnodder; Jie Le; Kris Vissenberg; Frantisek Baluska
Journal: Plant Signal Behav Date: 2006-11

1. Transcriptome Profiling of Tiller Buds Provides New Insights into PhyB Regulation of Tillering and Indeterminate Growth in Sorghum.

Authors: Tesfamichael H Kebrom; John E Mullet
Journal: Plant Physiol Date: 2016-02-18 Impact factor: 8.340

1 in total

DAR2 acts as an important node connecting cytokinin, auxin, SHY2 and PLT1/2 in root meristem size control.

Review 1. Root apex transition zone: a signalling-response nexus in the root.

2. The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots.

3. The Root Apex of Arabidopsis thaliana Consists of Four Distinct Zones of Growth Activities: Meristematic Zone, Transition Zone, Fast Elongation Zone and Growth Terminating Zone.

4. Auxin regulates distal stem cell differentiation in Arabidopsis roots.

5. Control of root meristem size by DA1-RELATED PROTEIN2 in Arabidopsis.

6. The PLETHORA genes mediate patterning of the Arabidopsis root stem cell niche.

7. Cytokinins determine Arabidopsis root-meristem size by controlling cell differentiation.

8. Photomorphogenic development of the Arabidopsis shy2-1D mutation and its interaction with phytochromes in darkness.

9. Regulation of Arabidopsis SHY2/IAA3 protein turnover.

10. Arabidopsis SHY2/IAA3 inhibits auxin-regulated gene expression.

1. Transcriptome Profiling of Tiller Buds Provides New Insights into PhyB Regulation of Tillering and Indeterminate Growth in Sorghum.