The WRKY Transcription Factor Genes in Lotus japonicus

The WRKY Transcription Factor Genes in Lotus japonicus

WRKY transcription factor genes play critical roles in plant growth and development, as well as stress responses. WRKY genes have been examined in various higher plants, but they have not been characterized in Lotus japonicus. The recent release of the L. japonicus whole genome sequence provides an...

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Main Authors: Song, Hui, Wang, Pengfei, Nan, Zhibiao, Wang, Xingjun
Format: Online
Language:English
Published: Hindawi Publishing Corporation 2014
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3976811/
id pubmed-3976811
recordtype oai_dc
spelling pubmed-39768112014-04-17 The WRKY Transcription Factor Genes in Lotus japonicus Song, Hui Wang, Pengfei Nan, Zhibiao Wang, Xingjun Research Article WRKY transcription factor genes play critical roles in plant growth and development, as well as stress responses. WRKY genes have been examined in various higher plants, but they have not been characterized in Lotus japonicus. The recent release of the L. japonicus whole genome sequence provides an opportunity for a genome wide analysis of WRKY genes in this species. In this study, we identified 61 WRKY genes in the L. japonicus genome. Based on the WRKY protein structure, L. japonicus WRKY (LjWRKY) genes can be classified into three groups (I–III). Investigations of gene copy number and gene clusters indicate that only one gene duplication event occurred on chromosome 4 and no clustered genes were detected on chromosomes 3 or 6. Researchers previously believed that group II and III WRKY domains were derived from the C-terminal WRKY domain of group I. Our results suggest that some WRKY genes in group II originated from the N-terminal domain of group I WRKY genes. Additional evidence to support this hypothesis was obtained by Medicago truncatula WRKY (MtWRKY) protein motif analysis. We found that LjWRKY and MtWRKY group III genes are under purifying selection, suggesting that WRKY genes will become increasingly structured and functionally conserved. Hindawi Publishing Corporation 2014 2014-03-16 /pmc/articles/PMC3976811/ /pubmed/24745006 http://dx.doi.org/10.1155/2014/420128 Text en Copyright © 2014 Hui Song et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Song, Hui
Wang, Pengfei
Nan, Zhibiao
Wang, Xingjun
spellingShingle Song, Hui
Wang, Pengfei
Nan, Zhibiao
Wang, Xingjun
The WRKY Transcription Factor Genes in Lotus japonicus
author_facet Song, Hui
Wang, Pengfei
Nan, Zhibiao
Wang, Xingjun
author_sort Song, Hui
title The WRKY Transcription Factor Genes in Lotus japonicus
title_short The WRKY Transcription Factor Genes in Lotus japonicus
title_full The WRKY Transcription Factor Genes in Lotus japonicus
title_fullStr The WRKY Transcription Factor Genes in Lotus japonicus
title_full_unstemmed The WRKY Transcription Factor Genes in Lotus japonicus
title_sort wrky transcription factor genes in lotus japonicus
description WRKY transcription factor genes play critical roles in plant growth and development, as well as stress responses. WRKY genes have been examined in various higher plants, but they have not been characterized in Lotus japonicus. The recent release of the L. japonicus whole genome sequence provides an opportunity for a genome wide analysis of WRKY genes in this species. In this study, we identified 61 WRKY genes in the L. japonicus genome. Based on the WRKY protein structure, L. japonicus WRKY (LjWRKY) genes can be classified into three groups (I–III). Investigations of gene copy number and gene clusters indicate that only one gene duplication event occurred on chromosome 4 and no clustered genes were detected on chromosomes 3 or 6. Researchers previously believed that group II and III WRKY domains were derived from the C-terminal WRKY domain of group I. Our results suggest that some WRKY genes in group II originated from the N-terminal domain of group I WRKY genes. Additional evidence to support this hypothesis was obtained by Medicago truncatula WRKY (MtWRKY) protein motif analysis. We found that LjWRKY and MtWRKY group III genes are under purifying selection, suggesting that WRKY genes will become increasingly structured and functionally conserved.
publisher Hindawi Publishing Corporation
publishDate 2014
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3976811/
_version_ 1612074565033263104

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