Stimulus-induced downregulation of root water transport involves reactive oxygen species-activated cell signalling and plasma membrane intrinsic protein internalization
| Autor: | Christophe Maurel, Olivier Postaire, Colette Tournaire-Roux, Julie Boudet, Yann Boursiac, Doan-Trung Luu |
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| Rok vydání: | 2008 |
| Předmět: |
0106 biological sciences
media_common.quotation_subject Aquaporin Plant Science Vacuole 01 natural sciences 03 medical and health sciences Arabidopsis Genetics Internalization 030304 developmental biology media_common chemistry.chemical_classification 0303 health sciences Reactive oxygen species Water transport biology Cell Biology biology.organism_classification Cell biology chemistry Biochemistry Catalase biology.protein Intracellular 010606 plant biology & botany |
| Zdroj: | The Plant Journal. 56:207-218 |
| ISSN: | 0960-7412 |
| Popis: | The water uptake capacity of plant roots (i.e. their hydraulic conductivity, Lp r ) is determined in large part by aquaporins of the plasma membrane intrinsic protein (PIP) subfamily. In the present work, we investigated two stimuli, salicylic acid (SA) and salt, because of their ability to induce an accumulation of reactive oxygen species (ROS) and an inhibition of Lp r concomitantly in the roots of Arabidopsis plants. The inhibition of Lp r by SA was partially counteracted by preventing the accumulation of hydrogen peroxide (H 2 O 2 ) with exogenous catalase. In addition, exogenous H 2 O 2 was able to reduce Lp r by up to 90% in |
| Databáze: | OpenAIRE |
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