caa a22 4500 467893632 CHVBK 20180406152756.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s11103-005-4210-y doi (NATIONALLICENCE)springer-10.1007/s11103-005-4210-y PIP Aquaporin Gene Expression in Arbuscular Mycorrhizal Glycinemax and Lactuca sativa Plants in Relation to Drought Stress Tolerance [Elektronische Daten] [Rosa Porcel, Ricardo Aroca, Rosario Azcón, Juan Ruiz-Lozano] Although the discovery of aquaporins in plants has resulted in a paradigm shift in the understanding of plant water relations, the relationship between aquaporins and plant responses to drought still remains elusive. Moreover, the contribution of aquaporin genes to the enhanced tolerance to drought in arbuscular mycorrhisal (AM) plants has never been investigated. Therefore, we studied, at a molecular level, whether the expression of aquaporin-encoding genes in roots is altered by the AM symbiosis as a mechanism to enhance host plant tolerance to water deficit. In this study, genes encoding plasma membrane aquaporins (PIPs) from soybean and lettuce were cloned and their expression pattern studied in AM and nonAM plants cultivated under well-watered or drought stressed conditions. Results showed that AM plants responded to drought stress by down-regulating the expression of the PIP genes studied and anticipating its down-regulation as compared to nonAM plants. The possible physiological implications of this down-regulation of PIP genes as a mechanism to decrease membrane water permeability and to allow cellular water conservation is further discussed. Springer, 2006 arbuscular mycorrhizal symbiosis nationallicence drought tolerance nationallicence PIP aquaporin nationallicence water deficit nationallicence Porcel Rosa Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut Aroca Ricardo Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut Azcón Rosario Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut Ruiz-Lozano Juan Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut Plant Molecular Biology Kluwer Academic Publishers 60/3(2006-02-01), 389-404 0167-4412 60:3<389 2006 60 11103 https://doi.org/10.1007/s11103-005-4210-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11103-005-4210-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Porcel Rosa Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut NATIONALLICENCE 700 1- Aroca Ricardo Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut NATIONALLICENCE 700 1- Azcón Rosario Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut NATIONALLICENCE 700 1- Ruiz-Lozano Juan Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda, no. 1, 18008, Granada, Spain aut NATIONALLICENCE 773 0- Plant Molecular Biology Kluwer Academic Publishers 60/3(2006-02-01), 389-404 0167-4412 60:3<389 2006 60 11103 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer