Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity
Iron toxicity is a major constraint to rice production, particularly in highly weathered soils of inland valleys in sub-Saharan Africa where the rice growing area is rapidly expanding. There is a wide variation in tolerance of iron toxicity in the rice germplasm. However, the introgression of tolera...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/118328 |
| _version_ | 1855523029452324864 |
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| author | Kirk, G.J.D. Manwaring, H.R. Ueda, Y. Semwal, V.K. Wissuwa, M. |
| author_browse | Kirk, G.J.D. Manwaring, H.R. Semwal, V.K. Ueda, Y. Wissuwa, M. |
| author_facet | Kirk, G.J.D. Manwaring, H.R. Ueda, Y. Semwal, V.K. Wissuwa, M. |
| author_sort | Kirk, G.J.D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Iron toxicity is a major constraint to rice production, particularly in highly weathered soils of inland valleys in sub-Saharan Africa where the rice growing area is rapidly expanding. There is a wide variation in tolerance of iron toxicity in the rice germplasm. However, the introgression of tolerance traits into high-yielding germplasm has been slow owing to the complexity of the tolerance mechanisms and large genotype-by-environment effects. We review current understanding of tolerance mechanisms, particularly those involving below-ground plant–soil interactions. Until now these have been less studied than above-ground mechanisms. We cover processes in the rhizosphere linked to exclusion of toxic ferrous iron by oxidation, and resulting effects on the mobility of nutrient ions. We also cover the molecular physiology of below-ground processes controlling iron retention in roots and root-shoot transport, and also plant iron sensing. We conclude that future breeding programmes should be based on well-characterized molecular markers for iron toxicity tolerance traits. To successfully identify such markers, the complex tolerance response should be broken down into its components based on understanding of tolerance mechanisms, and tailored screening methods should be developed for individual mechanisms. |
| format | Journal Article |
| id | CGSpace118328 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1183282023-03-18T04:47:03Z Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity Kirk, G.J.D. Manwaring, H.R. Ueda, Y. Semwal, V.K. Wissuwa, M. research rice Iron toxicity is a major constraint to rice production, particularly in highly weathered soils of inland valleys in sub-Saharan Africa where the rice growing area is rapidly expanding. There is a wide variation in tolerance of iron toxicity in the rice germplasm. However, the introgression of tolerance traits into high-yielding germplasm has been slow owing to the complexity of the tolerance mechanisms and large genotype-by-environment effects. We review current understanding of tolerance mechanisms, particularly those involving below-ground plant–soil interactions. Until now these have been less studied than above-ground mechanisms. We cover processes in the rhizosphere linked to exclusion of toxic ferrous iron by oxidation, and resulting effects on the mobility of nutrient ions. We also cover the molecular physiology of below-ground processes controlling iron retention in roots and root-shoot transport, and also plant iron sensing. We conclude that future breeding programmes should be based on well-characterized molecular markers for iron toxicity tolerance traits. To successfully identify such markers, the complex tolerance response should be broken down into its components based on understanding of tolerance mechanisms, and tailored screening methods should be developed for individual mechanisms. 2022-03 2022-03-03T15:30:04Z 2022-03-03T15:30:04Z Journal Article https://hdl.handle.net/10568/118328 en Open Access Wiley Kirk, G.J.D. Manwaring, H.R. Ueda, Y. Semwal, V.K. Wissuwa, M.Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity. Plant, Cell & Environment.2021, Volume 45, Issue 3 :705-718. |
| spellingShingle | research rice Kirk, G.J.D. Manwaring, H.R. Ueda, Y. Semwal, V.K. Wissuwa, M. Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity |
| title | Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity |
| title_full | Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity |
| title_fullStr | Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity |
| title_full_unstemmed | Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity |
| title_short | Below-ground plant–soil interactions affecting adaptations of rice to iron toxicity |
| title_sort | below ground plant soil interactions affecting adaptations of rice to iron toxicity |
| topic | research rice |
| url | https://hdl.handle.net/10568/118328 |
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