Chloride regulates leaf cell size and water relations in tobacco plants
19 páginas.-- 9 figuras.-- 5 tablas.-- 77 referencias.-- Supplementary Data: Supplementary_figures_S1_S7___Tables_S1_S7.pdf
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Oxford University Press
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| Subjects: | Beneficial nutrient, Chloride nutrition, Growth, Osmotic potential, Turgor, Water potential, Water balance, Water relations, Water-use efficiency, WUE, |
| Online Access: | http://hdl.handle.net/10261/126281 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 |
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dig-irnas-es-10261-1262812021-12-28T16:07:25Z Chloride regulates leaf cell size and water relations in tobacco plants Franco-Navarro, Juan D. Brumós Fuentes, Javier Rosales Villegas, Miguel Á. Cubero Font, Paloma Talón Cubillo, Manuel Colmenero Flores, José M. Ministerio de Ciencia e Innovación (España) European Commission Beneficial nutrient Chloride nutrition Growth Osmotic potential Turgor Water potential Water balance Water relations Water-use efficiency WUE 19 páginas.-- 9 figuras.-- 5 tablas.-- 77 referencias.-- Supplementary Data: Supplementary_figures_S1_S7___Tables_S1_S7.pdf Chloride (Cl–) is a micronutrient that accumulates to macronutrient levels since it is normally available in nature and actively taken up by higher plants. Besides a role as an unspecific cell osmoticum, no clear biological roles have been explicitly associated with Cl– when accumulated to macronutrient concentrations. To address this question, the glycophyte tobacco (Nicotiana tabacum L. var. Habana) has been treated with a basal nutrient solution supplemented with one of three salt combinations containing the same cationic balance: Cl–-based (CL), nitrate-based (N), and sulphate+phosphate-based (SP) treatments. Under non-saline conditions (up to 5mM Cl–) and no water limitation, Cl– specifically stimulated higher leaf cell size and led to a moderate increase of plant fresh and dry biomass mainly due to higher shoot expansion. When applied in the 1–5mM range, Cl– played specific roles in regulating leaf osmotic potential and turgor, allowing plants to improve leaf water balance parameters. In addition, Cl– also altered water relations at the whole-plant level through reduction of plant transpiration. This was a consequence of a lower stomatal conductance, which resulted in lower water loss and greater photosynthetic and integrated water-use efficiency. In contrast to Cl–, these effects were not observed for essential anionic macronutrients such as nitrate, sulphate, and phosphate. We propose that the abundant uptake and accumulation of Cl– responds to adaptive functions improving water homeostasis in higher plants. This work was supported by the Spanish Ministry of Science and Innovation-FEDER grant AGL2009-08339/AGR. The help, expertise, and technical assistance of C. Rivero, A. Vázquez, S. Luque, B.J. Sañudo, F.J. Durán, Y. Pinto, and J. Espartero are gratefully acknowledged. We would like to extend our gratitude to the valuable reviews and contributions by the anonymous referees and the editor, Timothy Colmer, which helped us to improve the manuscript substantially. Peer reviewed 2016-02-03 artículo http://purl.org/coar/resource_type/c_6501 Journal of Experimental Botany 67(3): 873-891 (2015) http://hdl.handle.net/10261/126281 10.1093/jxb/erv502 1460-2431 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 26602947 Publisher's version http://dx.doi.org/ 10.1093/jxb/erv502 Sí open Oxford University Press |
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Beneficial nutrient Chloride nutrition Growth Osmotic potential Turgor Water potential Water balance Water relations Water-use efficiency WUE Beneficial nutrient Chloride nutrition Growth Osmotic potential Turgor Water potential Water balance Water relations Water-use efficiency WUE |
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Beneficial nutrient Chloride nutrition Growth Osmotic potential Turgor Water potential Water balance Water relations Water-use efficiency WUE Beneficial nutrient Chloride nutrition Growth Osmotic potential Turgor Water potential Water balance Water relations Water-use efficiency WUE Franco-Navarro, Juan D. Brumós Fuentes, Javier Rosales Villegas, Miguel Á. Cubero Font, Paloma Talón Cubillo, Manuel Colmenero Flores, José M. Chloride regulates leaf cell size and water relations in tobacco plants |
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19 páginas.-- 9 figuras.-- 5 tablas.-- 77 referencias.-- Supplementary Data: Supplementary_figures_S1_S7___Tables_S1_S7.pdf |
| author2 |
Ministerio de Ciencia e Innovación (España) |
| author_facet |
Ministerio de Ciencia e Innovación (España) Franco-Navarro, Juan D. Brumós Fuentes, Javier Rosales Villegas, Miguel Á. Cubero Font, Paloma Talón Cubillo, Manuel Colmenero Flores, José M. |
| format |
artículo |
| topic_facet |
Beneficial nutrient Chloride nutrition Growth Osmotic potential Turgor Water potential Water balance Water relations Water-use efficiency WUE |
| author |
Franco-Navarro, Juan D. Brumós Fuentes, Javier Rosales Villegas, Miguel Á. Cubero Font, Paloma Talón Cubillo, Manuel Colmenero Flores, José M. |
| author_sort |
Franco-Navarro, Juan D. |
| title |
Chloride regulates leaf cell size and water relations in tobacco plants |
| title_short |
Chloride regulates leaf cell size and water relations in tobacco plants |
| title_full |
Chloride regulates leaf cell size and water relations in tobacco plants |
| title_fullStr |
Chloride regulates leaf cell size and water relations in tobacco plants |
| title_full_unstemmed |
Chloride regulates leaf cell size and water relations in tobacco plants |
| title_sort |
chloride regulates leaf cell size and water relations in tobacco plants |
| publisher |
Oxford University Press |
| url |
http://hdl.handle.net/10261/126281 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 |
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