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| 著者 | Yokotani N., Tsuchida-Mayama T., Ichikawa H., Mitsuda N., Ohme-Takagi M., Kaku H., Minami E., Nishizawa Y. | |
| タイトル | OsNAC111, a blast disease-responsive transcription factor in rice, positively regulates the expression of defense-related genes. | |
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Abstract: Plants respond to pathogen attack by transcriptionally regulating defense-related genes via various types of transcription factors. We identified a transcription factor in rice, OsNAC111, belonging to the TERN subgroup of the NAC family that was transcriptionally upregulated after rice blast fungus (Magnaporthe oryzae) inoculation. OsNAC111 was localized in the nucleus of rice cells and had transcriptional activation activity in yeast and rice cells. Transgenic rice plants overexpressing OsNAC111 showed increased resistance to the rice blast fungus. In OsNAC111-overexpressing plants, the expression of several defense-related genes, including pathogenesis-related (PR) genes, was constitutively high compared with the control. These genes all showed blast disease-responsive expression in leaves. Among them, two chitinase genes and one beta-1,3-glucanase gene showed reduced expression in transgenic rice plants in which OsNAC111 function was suppressed by a chimeric repressor (OsNAC111-SRDX). OsNAC111 activated transcription from the promoters of the chitinase and beta-1,3-glucanase genes in rice cells. In addition, brown pigmentation at the infection sites, a defense response of rice cells to the blast fungus, was lowered in OsNAC111-SRDX plants at the early infection stage. These results indicate that OsNAC111 positively regulates the expression of a specific set of PR genes in the disease response and contributes to disease resistance. |
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| 掲載誌 | Mol. Plant Microbe Interact. | |
| Country | unknown | |
| 刊数 | 27(10) | |
| ページ | 1027-34 | |
| 発刊年 | 2014 | |
| PubMed ID | 25014590 | |
| PubMed Central ID | - | |
| DOI | 10.1094/MPMI-03-14-0065-R | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | CHT11 CHT3 CPS4 GNS10 GNS6 NAC17 PR4B RLCK16 RPP17 WAK112 WAK20 WRKY19 WRKY77 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ | |
| INSD | - | |
| 系統 |
野生イネ コアコレクション |
- |
| 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) |
- | |
| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
