The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice
Nitrate reductase (NR) is a key enzyme for nitrogen assimilation in plants, and its activity is regulated by posttranslational phosphorylation. To investigate the effects of dephosphorylation of the NIA1 protein on the growth and the physiological and biochemical characteristics of rice under differ...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311920634736 |
| _version_ | 1818905362051366912 |
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| author | Rui-cai HAN Zhi-rong XU Chen-yan LI Adnan RASHEED Xiao-hua PAN Qing-hua SHI Zi-ming WU |
| author_facet | Rui-cai HAN Zhi-rong XU Chen-yan LI Adnan RASHEED Xiao-hua PAN Qing-hua SHI Zi-ming WU |
| author_sort | Rui-cai HAN |
| collection | DOAJ |
| description | Nitrate reductase (NR) is a key enzyme for nitrogen assimilation in plants, and its activity is regulated by posttranslational phosphorylation. To investigate the effects of dephosphorylation of the NIA1 protein on the growth and the physiological and biochemical characteristics of rice under different forms of nitrogen supplies, the phenotypes, nitrogen metabolism and reactive oxygen metabolism were measured in NIA1 phosphorylation site-directed mutant lines (S532D and S532A), an OsNia1 over-expression line (OE) and Kitaake (wild type, WT). Compared with WT and OE, S532D and S532A have stronger nitrogen assimilation capacities. When ammonium nitrate served as the nitrogen source, the plant heights, dry weights of shoots and chlorophyll (Chl) contents of S532D and S532A were lower than those of the WT and OE, whereas hydrogen peroxide (H2O2), malondialdehyde (MDA) and nitrite contents were higher. When potassium nitrate served as the nitrogen source, the plant heights, dry weights of shoots and Chl contents of S532D and S532A were higher than those of the WT and OE, there were no significant differences in the contents of H2O2 and MDA in the leaves of the test materials, and the difference in nitrite contents among different lines decreased. When ammonium sulfate served as the nitrogen source, there were no significant differences in the physiological indexes of the test materials, except NR activity. Compared with ammonium nitrate and ammonium sulfate, the content of NH4+-N in the leaves of each plant was lower when potassium nitrate was used as the nitrogen source. The qPCR results showed that OsGS and OsNGS1 were negatively regulated by downstream metabolites, and OsNrt2.2 was induced by nitrate. In summary, when ammonium nitrate served as the nitrogen source, the weak growth of NIA1 phosphorylation site-directed mutant lines was due to the toxicity caused by the excessive accumulation of nitrite. When potassium nitrate served as the nitrogen source, the assimilation rates of nitrate, nitrite and ammonium salt were accelerated in NIA1 phosphorylation site-directed mutant lines, which could provide more nitrogen nutrition and improve the tolerance of rice to ammonium nitrogen deficiency. These results could provide a possible method to improve the efficiency of nitrogen utilization in rice under low-nitrogen conditions. |
| first_indexed | 2024-12-19T21:22:07Z |
| format | Article |
| id | doaj.art-a1e4061199fb415fbc8458f462ab1024 |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-12-19T21:22:07Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-a1e4061199fb415fbc8458f462ab10242022-12-21T20:05:12ZengElsevierJournal of Integrative Agriculture2095-31192022-03-01213631643The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in riceRui-cai HAN0Zhi-rong XU1Chen-yan LI2Adnan RASHEED3Xiao-hua PAN4Qing-hua SHI5Zi-ming WU6Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.China; Rice Research Institute, Jiangxi Academyof Agricultural Sciences/Jiangxi Provincial Key Laboratory for Physiology and Genetics of Rice, Nanchang 330200, P.R.ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, P.R.China; Correspondence WU Zi-ming, Tel: +86-791-83828113, Fax: +86-791-83813877Nitrate reductase (NR) is a key enzyme for nitrogen assimilation in plants, and its activity is regulated by posttranslational phosphorylation. To investigate the effects of dephosphorylation of the NIA1 protein on the growth and the physiological and biochemical characteristics of rice under different forms of nitrogen supplies, the phenotypes, nitrogen metabolism and reactive oxygen metabolism were measured in NIA1 phosphorylation site-directed mutant lines (S532D and S532A), an OsNia1 over-expression line (OE) and Kitaake (wild type, WT). Compared with WT and OE, S532D and S532A have stronger nitrogen assimilation capacities. When ammonium nitrate served as the nitrogen source, the plant heights, dry weights of shoots and chlorophyll (Chl) contents of S532D and S532A were lower than those of the WT and OE, whereas hydrogen peroxide (H2O2), malondialdehyde (MDA) and nitrite contents were higher. When potassium nitrate served as the nitrogen source, the plant heights, dry weights of shoots and Chl contents of S532D and S532A were higher than those of the WT and OE, there were no significant differences in the contents of H2O2 and MDA in the leaves of the test materials, and the difference in nitrite contents among different lines decreased. When ammonium sulfate served as the nitrogen source, there were no significant differences in the physiological indexes of the test materials, except NR activity. Compared with ammonium nitrate and ammonium sulfate, the content of NH4+-N in the leaves of each plant was lower when potassium nitrate was used as the nitrogen source. The qPCR results showed that OsGS and OsNGS1 were negatively regulated by downstream metabolites, and OsNrt2.2 was induced by nitrate. In summary, when ammonium nitrate served as the nitrogen source, the weak growth of NIA1 phosphorylation site-directed mutant lines was due to the toxicity caused by the excessive accumulation of nitrite. When potassium nitrate served as the nitrogen source, the assimilation rates of nitrate, nitrite and ammonium salt were accelerated in NIA1 phosphorylation site-directed mutant lines, which could provide more nitrogen nutrition and improve the tolerance of rice to ammonium nitrogen deficiency. These results could provide a possible method to improve the efficiency of nitrogen utilization in rice under low-nitrogen conditions.http://www.sciencedirect.com/science/article/pii/S2095311920634736Oryza sativa L.nitrate reductasephosphorylationNR activitynitrogen utilizationnitrite |
| spellingShingle | Rui-cai HAN Zhi-rong XU Chen-yan LI Adnan RASHEED Xiao-hua PAN Qing-hua SHI Zi-ming WU The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice Journal of Integrative Agriculture Oryza sativa L. nitrate reductase phosphorylation NR activity nitrogen utilization nitrite |
| title | The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice |
| title_full | The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice |
| title_fullStr | The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice |
| title_full_unstemmed | The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice |
| title_short | The removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice |
| title_sort | removal of nitrate reductase phosphorylation enhances tolerance to ammonium nitrogen deficiency in rice |
| topic | Oryza sativa L. nitrate reductase phosphorylation NR activity nitrogen utilization nitrite |
| url | http://www.sciencedirect.com/science/article/pii/S2095311920634736 |
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