The arbuscular mycorrhizal symbiosis regulates aquaporins activity and improves root cell water permeability in maize plants subjected to water stress
Studies have suggested that increased root hydraulic conductivity in mycorrhizal roots could be the result of increased cell‐to‐cell water flux via aquaporins. This study aimed to elucidate if the key effect of the regulation of maize aquaporins by the arbuscular mycorrhizal (AM) symbiosis is the en...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/183498 |
| Acceso en línea: | http://hdl.handle.net/10261/183498 |
| Access Level: | acceso abierto |
| Palabra clave: | Water permeability Protoplasts Photosynthesis Arbuscular mycorrhizal symbiosis Cell pressure probe Cell hydraulic conductivity Aquaporins |
| Sumario: | Studies have suggested that increased root hydraulic conductivity in mycorrhizal roots could be the result of increased cell‐to‐cell water flux via aquaporins. This study aimed to elucidate if the key effect of the regulation of maize aquaporins by the arbuscular mycorrhizal (AM) symbiosis is the enhancement of root cell water transport capacity. Thus, water permeability coefficient (Pf) and cell hydraulic conductivity (Lpc) were measured in root protoplast and intact cortex cells of AM and non‐AM plants subjected or not to water stress. Results showed that cells from droughted‐AM roots maintained Pf and Lpc values of non stressed plants, whereas in non‐AM roots, these values declined drastically as a consequence of water deficit. Interestingly, the phosphorylation status of PIP2 aquaporins increased in AM plants subjected |
|---|