Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.)
Aquaporin activity and root anatomy may affect root hydraulic properties under drought stress. To better understand the function of aquaporins in rice root water fluxes under drought, we studied the root hydraulic conductivity (Lpr) and root sap exudation rate (Sr) in the presence or absence of an a...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/165371 |
| _version_ | 1855530238747869184 |
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| author | Grondin, Alexandre Mauleon, Ramil Vadez, Vincent Henry, Amelia |
| author_browse | Grondin, Alexandre Henry, Amelia Mauleon, Ramil Vadez, Vincent |
| author_facet | Grondin, Alexandre Mauleon, Ramil Vadez, Vincent Henry, Amelia |
| author_sort | Grondin, Alexandre |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Aquaporin activity and root anatomy may affect root hydraulic properties under drought stress. To better understand the function of aquaporins in rice root water fluxes under drought, we studied the root hydraulic conductivity (Lpr) and root sap exudation rate (Sr) in the presence or absence of an aquaporin inhibitor (azide) under well‐watered conditions and following drought stress in six diverse rice varieties. Varieties varied in Lpr and Sr under both conditions. The contribution of aquaporins to Lpr was generally high (up to 79% under well‐watered conditions and 85% under drought stress) and differentially regulated under drought. Aquaporin contribution to Sr increased in most varieties after drought, suggesting a crucial role for aquaporins in osmotic water fluxes during drought and recovery. Furthermore, root plasma membrane aquaporin (PIP) expression and root anatomical properties were correlated with hydraulic traits. Three chromosome regions highly correlated with hydraulic traits of the OryzaSNP panel were identified, but did not co‐locate with known aquaporins. These results therefore highlight the importance of aquaporins in the rice root radial water pathway, but emphasize the complex range of additional mechanisms related to root water fluxes and drought response. |
| format | Journal Article |
| id | CGSpace165371 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1653712025-01-27T15:00:52Z Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) Grondin, Alexandre Mauleon, Ramil Vadez, Vincent Henry, Amelia drought stress drought tolerance plant physiology plant water relations plasma membranes varieties Aquaporin activity and root anatomy may affect root hydraulic properties under drought stress. To better understand the function of aquaporins in rice root water fluxes under drought, we studied the root hydraulic conductivity (Lpr) and root sap exudation rate (Sr) in the presence or absence of an aquaporin inhibitor (azide) under well‐watered conditions and following drought stress in six diverse rice varieties. Varieties varied in Lpr and Sr under both conditions. The contribution of aquaporins to Lpr was generally high (up to 79% under well‐watered conditions and 85% under drought stress) and differentially regulated under drought. Aquaporin contribution to Sr increased in most varieties after drought, suggesting a crucial role for aquaporins in osmotic water fluxes during drought and recovery. Furthermore, root plasma membrane aquaporin (PIP) expression and root anatomical properties were correlated with hydraulic traits. Three chromosome regions highly correlated with hydraulic traits of the OryzaSNP panel were identified, but did not co‐locate with known aquaporins. These results therefore highlight the importance of aquaporins in the rice root radial water pathway, but emphasize the complex range of additional mechanisms related to root water fluxes and drought response. 2016-02 2024-12-19T12:54:59Z 2024-12-19T12:54:59Z Journal Article https://hdl.handle.net/10568/165371 en Wiley Grondin, Alexandre; Mauleon, Ramil; Vadez, Vincent and Henry, Amelia. 2016. Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.). Plant Cell and Environment, Volume 39 no. 2 p. 347-365 |
| spellingShingle | drought stress drought tolerance plant physiology plant water relations plasma membranes varieties Grondin, Alexandre Mauleon, Ramil Vadez, Vincent Henry, Amelia Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) |
| title | Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) |
| title_full | Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) |
| title_fullStr | Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) |
| title_full_unstemmed | Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) |
| title_short | Root aquaporins contribute to whole plant water fluxes under drought stress in rice (Oryza sativa L.) |
| title_sort | root aquaporins contribute to whole plant water fluxes under drought stress in rice oryza sativa l |
| topic | drought stress drought tolerance plant physiology plant water relations plasma membranes varieties |
| url | https://hdl.handle.net/10568/165371 |
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