دورية أكاديمية
Aquaporins and Leaf Hydraulics: Poplar Sheds New Light
| العنوان: | Aquaporins and Leaf Hydraulics: Poplar Sheds New Light |
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| المؤلفون: | Lopez, David, Venisse, Jean-Stéphane, Fumanal, Boris, Chaumont, François, Guillot, Esther, Daniels, Mark J., Cochard, Hervé, Julien, Jean-Louis, Gousset, Aurelie |
| المساهمون: | Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Institut des sciences de la Vie, Université Catholique de Louvain = Catholic University of Louvain (UCL), Department of Molecular Physiology and Biological Physics, University of Virginia, Ministere de la recherche et de l'enseignement superieur, Interuniversity Attraction Poles Programme-Belgian Science Policy, Communaute francaise de Belgique-Actions de Recherches Concertees |
| المصدر: | ISSN: 0032-0781. |
| بيانات النشر: | HAL CCSD Oxford University Press (OUP) |
| سنة النشر: | 2013 |
| المجموعة: | HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand / Université d'Auvergne) |
| مصطلحات موضوعية: | Aquaporin, Circadian regulation, Leaf hydraulic conductance (K-leaf), Light, Poplar (Populus trichocarpa, Populus nigra), Promoter, plasma-membrane aquaporins, quercus-macrocarpa leaves, major intrinsic, proteins, root water transport, drought stress, gene-expression, hybrid, poplar, functional-characterization, populus-trichocarpa, co2 diffusion, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology |
| الوصف: | To help understand leaf hydraulic conductance (K-leaf) modulation under high irradiance, well-watered poplars (Populus trichocarpa Torr. & Gray ex Hook and Populus nigra L.) were studied diurnally at molecular and ecophysiological scales. Transcriptional and translational modulations of plasma membrane intrinsic protein (PIP) aquaporins were evaluated in leaf samples during diurnal time courses. Among the 15 poplar PIP genes, a subset of two PIP1s and seven PIP2s are precociously induced within the first hour of the photoperiod concomitantly with a K-leaf increase. Since expression patterns were cyclic and reproducible over several days, we hypothesized that endogenous signals could be involved in PIP transcriptional regulation. To address this question, plants were submitted to forced darkness during their subjective photoperiod and compared with their control counterparts, which showed that some PIP1s and PIP2s have circadian regulation while others did not. Promoter analysis revealed that a large number of hormone, light, stress response and circadian elements are present. Finally, involvement of aquaporins is supported by the reduction of K-leaf by HgCl2 treatment. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-01060559; https://hal.science/hal-01060559Test; https://hal.science/hal-01060559/documentTest; https://hal.science/hal-01060559/file/2013_Lopez_Plant_Cell_Physiol_1.pdfTest; PRODINRA: 269553; WOS: 000328574800003 |
| DOI: | 10.1093/pcp/pct135 |
| الإتاحة: | https://doi.org/10.1093/pcp/pct135Test https://hal.science/hal-01060559Test https://hal.science/hal-01060559/documentTest https://hal.science/hal-01060559/file/2013_Lopez_Plant_Cell_Physiol_1.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.6AA105EF |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/pcp/pct135 |
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