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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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Genomics |
| Online Access: | http://dx.doi.org/10.1155/2014/420128 |
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| author | Hui Song Pengfei Wang Zhibiao Nan Xingjun Wang |
| author_facet | Hui Song Pengfei Wang Zhibiao Nan Xingjun Wang |
| author_sort | Hui Song |
| collection | DOAJ |
| 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. |
| format | Article |
| id | doaj-art-a450ae4ebd1a4879b98d788405fa7d8f |
| institution | Kabale University |
| issn | 2314-436X 2314-4378 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Genomics |
| spelling | doaj-art-a450ae4ebd1a4879b98d788405fa7d8f2025-02-03T01:23:53ZengWileyInternational Journal of Genomics2314-436X2314-43782014-01-01201410.1155/2014/420128420128The WRKY Transcription Factor Genes in Lotus japonicusHui Song0Pengfei Wang1Zhibiao Nan2Xingjun Wang3College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, ChinaBio-Tech Research Center, Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Jinan 250100, ChinaCollege of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, ChinaBio-Tech Research Center, Shandong Academy of Agricultural Sciences, Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Jinan 250100, ChinaWRKY 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.http://dx.doi.org/10.1155/2014/420128 |
| spellingShingle | Hui Song Pengfei Wang Zhibiao Nan Xingjun Wang The WRKY Transcription Factor Genes in Lotus japonicus International Journal of Genomics |
| title | 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_short | The WRKY Transcription Factor Genes in Lotus japonicus |
| title_sort | wrky transcription factor genes in lotus japonicus |
| url | http://dx.doi.org/10.1155/2014/420128 |
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