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| 文献 | ||
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| 著者 | Zhu C.Q., Zhu X.F., Wang C., Dong X.Y., Shen R.F. | |
| タイトル | Nitrate inhibits the remobilization of cell wall phosphorus under phosphorus-starvation conditions in rice (Oryza sativa). | |
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Abstract: NO3- not only inhibited the reutilization of cell wall P via decreasing root cell wall pectin content and PME activity, but also hampered the P translocation from root to shoot. The rice cultivars 'Kasalath' (Kas) and 'Nipponbare' (Nip) were used to demonstrate that the nitrogen source NO3- inhibits internal phosphorus (P) reutilization in rice under P-absence conditions. Analysis using Kas showed that the expression of - P-induced marker genes OsIPS1/2 and OsSPX1/2/3/5 are significantly higher under 1 mM NO 3- - P (1N - P) treatment than 0 mM NO 3- - P (0N - P) treatment. The absence of NO3- from the nutrient solution significantly increased cell wall P release by increasing pectin synthesis and increasing the activity of pectin methylesterase (PME), and also significantly improved the translocation of soluble P from the root to the shoot by increasing xylem sap P content under P-absence conditions. The rice seedlings grown in 0 mM NO3- accumulated significantly higher nitric oxide (NO) in the roots than those grown in 1 mM NO3-. Exogenously applying the NO donor sodium nitroprusside (SNP) revealed that NO is a major contributor to differential cell wall P remobilization in rice by mediating pectin synthesis and demethylation under different NO3- concentrations (0 and 1 mM) under P-deprived conditions. |
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| 掲載誌 | Planta | |
| Country | China | |
| 刊数 | 248(1) | |
| ページ | 185-196 | |
| 発刊年 | 2018 | |
| PubMed ID | 29663070 | |
| PubMed Central ID | - | |
| DOI | 10.1007/s00425-018-2892-z | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | IPS1 PI1 SPX1 SPX2 SPX3 SPX5 | |
| 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 | - | |
|
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 | - | |
