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SWP1 negatively regulates lateral root initiation and elongation in Arabidopsis

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Title SWP1 negatively regulates lateral root initiation and elongation in Arabidopsis
 
Creator Singh, Sharmila
Singh, Archita
Roy, Shradha
Sarkar, Ananda K.
 
Subject Arabidopsis
lateral root
root meristem
histone modification
LDL1
SWP1
ARF
 
Description Accepted date: 6th September 2012
The main root and continuously emerging lateral roots constitute the root architecture of an adult plant during its postembryonic development. Epigenetic modifications like methylation or deacetylation of histones have been suggested to regulate root development. SWP1/LDL1, a component of plant specific corepressor complex, has been implicated in the induction of flowers and root through histone modifications in Arabidopsis. However, molecular role of SWP1 in regulating the lateral root development remained unexplored. Here we show that SWP1 regulates lateral root initiation and elongation in Arabidopsis. Mutation in SWP1 increases both the density and length of lateral roots. SWP1 negatively regulates lateral root initiation through direct/indirect transcriptional repression of lateral root promoting factors, such as AUXIN RESPONSE FACTORS (ARFs) and GATA23.
This work was financially supported by DBT (India, #BT/HRD/35/02/06/2008) Ramalingaswami fellowship grant to A.K. S. We also thank NIPGR for providing necessary research
facility and internal grant. A.S., S.S. and S. R. thank CSIR and
NIPGR respectively for fellowships.
 
Date 2015-10-30T08:59:59Z
2015-10-30T08:59:59Z
2012
 
Type Article
 
Identifier Plant Signal. Behav., 7(12): 1522-1525
1559-2324
http://www.tandfonline.com/doi/full/10.4161/psb.22099
http://172.16.0.77:8080/jspui/handle/123456789/288
 
Language en_US
 
Publisher Landes Bioscience