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| 著者 | Kun-Lu Wu, Ze-Jian Guo, Hai-Hua Wang, Li J. | |
| タイトル | The WRKY family of transcription factors in rice and Arabidopsis and their origins. | |
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Abstract: WRKY transcription factors, originally isolated from plants contain one or two conserved WRKY domains, about 60 amino acid residues with the WRKYGQK sequence followed by a C2H2 or C2HC zinc finger motif. Evidence is accumulating to suggest that the WRKY proteins play significant roles in responses to biotic and abiotic stresses, and in development. In this research, we identified 102 putative WRKY genes from the rice genome and compared them with those from Arabidopsis. The WRKY genes from rice and Arabidopsis were divided into three groups with several subgroups on the basis of phylogenies and the basic structure of the WRKY domains (WDs). The phylogenetic trees generated from the WDs and the genes indicate that the WRKY gene family arose during evolution through duplication and that the dramatic amplification of rice WRKY genes in group III is due to tandem and segmental gene duplication compared with those of Arabidopsis. The result suggests that some of the rice WRKY genes in group III are evolutionarily more active than those in Arabidopsis, and may have specific roles in monocotyledonous plants. Further, it was possible to identify the presence of WRKY-like genes in protists (Giardia lamblia and Dictyostelium discoideum) and green algae Chlamydomonas reinhardtii through database research, demonstrating the ancient origin of the gene family. The results obtained by alignments of the WDs from different species and other analysis imply that domain gain and loss is a divergent force for expansion of the WRKY gene family, and that a rapid amplification of the WRKY genes predate the divergence of monocots and dicots. On the basis of these results, we believe that genes encoding a single WD may have been derived from the C-terminal WD of the genes harboring two WDs. The conserved intron splicing positions in the WDs of higher plants offer clues about WRKY gene evolution, annotation, and classification. |
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| 掲載誌 | DNA research : an international journal for rapid publication of reports on genes and genomes | |
| Country | China | |
| 刊数 | 12(1) | |
| ページ | 9-26 | |
| 発刊年 | 2005 | |
| PubMed ID | 16106749 | |
| PubMed Central ID | - | |
| DOI | 10.1093/dnares/12.1.9 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | SGSD3 WRKY1 WRKY10 WRKY102 WRKY104 WRKY107 WRKY108 WRKY109 WRKY11 WRKY111 WRKY112 WRKY113 WRKY114 WRKY115 WRKY116 WRKY119 WRKY12 WRKY120 WRKY121 WRKY123 WRKY124 WRKY13 WRKY14 WRKY15 WRKY16 WRKY17 WRKY19 WRKY2 WRKY20 WRKY21 WRKY22 WRKY23 WRKY24 WRKY25 WRKY26 WRKY27 WRKY28 WRKY29 WRKY3 WRKY30 WRKY31 WRKY32 WRKY34 WRKY35 WRKY37 WRKY39 WRKY4 WRKY40 WRKY41 WRKY42 WRKY43 WRKY45 WRKY46 WRKY47 WRKY48 WRKY49 WRKY5 WRKY50 WRKY51 WRKY52 WRKY53 WRKY54 WRKY55 WRKY57 WRKY6 WRKY60 WRKY61 WRKY62 WRKY64 WRKY65 WRKY66 WRKY67 WRKY68 WRKY69 WRKY7 WRKY70 WRKY71 WRKY72 WRKY73 WRKY74 WRKY75 WRKY76 WRKY77 WRKY79 WRKY8 WRKY80 WRKY82 WRKY84 WRKY87 WRKY88 WRKY89 WRKY9 WRKY90 WRKY94 WRKY95 WRKY96 WRKY97 | |
| INSD | - | |
| 系統 |
野生イネ コアコレクション |
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| 突然変異系統(遺伝研 Collection) | - | |
| 種子不稔系統 | - | |
| 致死変異体系統 | - | |
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組織別発生段階 - 突然変異系統(遺伝子) |
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| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
