Chloride regulates leaf cell size and water relations in tobacco plants
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 macronu...
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Oxford University Press
2020
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/6444 https://academic.oup.com/jxb/article/67/3/873/2893351 |
| _version_ | 1855492085278310400 |
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| author | Franco-Navarro, Juan D. Brumos, Javier Rosales, Miguel A. Cubero-Font, Paloma Talón, Manuel Colmenero-Flores, José M. |
| author_browse | Brumos, Javier Colmenero-Flores, José M. Cubero-Font, Paloma Franco-Navarro, Juan D. Rosales, Miguel A. Talón, Manuel |
| author_facet | Franco-Navarro, Juan D. Brumos, Javier Rosales, Miguel A. Cubero-Font, Paloma Talón, Manuel Colmenero-Flores, José M. |
| author_sort | Franco-Navarro, Juan D. |
| collection | ReDivia |
| description | 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 5 mM 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 1–5 mM 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. |
| format | Artículo |
| id | ReDivia6444 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | ReDivia64442025-04-25T14:47:06Z Chloride regulates leaf cell size and water relations in tobacco plants Franco-Navarro, Juan D. Brumos, Javier Rosales, Miguel A. Cubero-Font, Paloma Talón, Manuel Colmenero-Flores, José M. Beneficial nutrients Chloride nutrition Water relations Water-use efficiency WUE F62 Plant physiology - Growth and development Growth Osmotic potential Turgor Water potential Water balance 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 5 mM 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 1–5 mM 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. 2020-05-14T14:42:07Z 2020-05-14T14:42:07Z 2016 article publishedVersion Franco-Navarro, J. D., Brumós, J., Rosales, M. A., Cubero-Font, P., Talón, M., & Colmenero-Flores, J. M. (2016). Chloride regulates leaf cell size and water relations in tobacco plants. Journal of experimental botany, 67(3), 873-891. 1460-2431 http://hdl.handle.net/20.500.11939/6444 10.1093/jxb/erv502 https://academic.oup.com/jxb/article/67/3/873/2893351 en Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Oxford University Press electronico |
| spellingShingle | Beneficial nutrients Chloride nutrition Water relations Water-use efficiency WUE F62 Plant physiology - Growth and development Growth Osmotic potential Turgor Water potential Water balance Franco-Navarro, Juan D. Brumos, Javier Rosales, Miguel A. Cubero-Font, Paloma Talón, Manuel Colmenero-Flores, José M. Chloride regulates leaf cell size and water relations in tobacco plants |
| title | 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_short | Chloride regulates leaf cell size and water relations in tobacco plants |
| title_sort | chloride regulates leaf cell size and water relations in tobacco plants |
| topic | Beneficial nutrients Chloride nutrition Water relations Water-use efficiency WUE F62 Plant physiology - Growth and development Growth Osmotic potential Turgor Water potential Water balance |
| url | http://hdl.handle.net/20.500.11939/6444 https://academic.oup.com/jxb/article/67/3/873/2893351 |
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