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dc.contributor.author | Gil, Ricardo | es_ES |
dc.contributor.author | Zayoud, Dhikra | es_ES |
dc.contributor.author | Ouerghi, Zeineb | es_ES |
dc.contributor.author | Boscaiu, Monica | es_ES |
dc.contributor.author | Vicente, Oscar | es_ES |
dc.contributor.author | Neffati, Mohamed | es_ES |
dc.date.accessioned | 2022-09-29T18:04:44Z | |
dc.date.available | 2022-09-29T18:04:44Z | |
dc.date.issued | 2021-06 | es_ES |
dc.identifier.issn | 1752-9921 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/186749 | |
dc.description.abstract | [EN] Aims: The survival and ecological distribution of plants in arid habitats are mainly conditioned by water availability and physiological adaptations to withstand drought. In the present study, we have compared the physiological responses to drought of two Retama raetam (retama) subspecies from Tunisia, one of them living under the desert climate (subsp. raetam) and the other one growing on the coast (subsp. bovei). Methods: To physiologically characterize the two R. raetam subspecies, and to elucidate their main mechanisms underlying their tolerance to drought stress, parameters related to seed germination, growth, photosynthesis (net photosynthetic rate, intracellular CO2 concentration, transpiration rate, stomatal conductance and water-use efficiency) and accumulation of osmolytes (proline, glycine betaine [GB] and soluble sugars) were determined in 4-month-old plants subjected to stress for up to 1 month. Important Findings: Drought significantly inhibited germination, growth and all the evaluated photosynthetic parameters. Plants of R. raetam subsp. bovei were severely affected by drought after 3 weeks of treatment when photosynthesis rates were up to 7-fold lower than in the controls. At the same time, proline and GB significantly accumulated compared with the irrigated controls, but much less than in R. raetam subsp. raetam; in the latter subspecies, proline and GB increased to levels 24- and 6-fold higher, respectively, than in the corresponding controls. In summary, the population living in the desert region exhibited stronger tolerance to drought stress than that adapted to the semiarid littoral climate, suggesting that tolerance in R. raetam is dependent on accumulation of osmolytes. | es_ES |
dc.description.sponsorship | Dhikra Zayoud's stay in Valencia was supported by a grant from the Tunisian Ministry of Higher Education and Scientific Research. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Oxford University Press | es_ES |
dc.relation.ispartof | Journal of Plant Ecology | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Germination | es_ES |
dc.subject | Leaf gas exchange | es_ES |
dc.subject | Osmolytes | es_ES |
dc.subject | Retama raetam | es_ES |
dc.subject | Water stress | es_ES |
dc.subject | Xerophytes | es_ES |
dc.subject.classification | BOTANICA | es_ES |
dc.subject.classification | BIOQUIMICA Y BIOLOGIA MOLECULAR | es_ES |
dc.title | Adaptive responses to drought of two Retama raetam subspecies from Tunisia | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1093/jpe/rtab007 | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario Mixto de Biología Molecular y Celular de Plantas - Institut Universitari Mixt de Biologia Molecular i Cel·lular de Plantes | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Biotecnología - Departament de Biotecnologia | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Ecosistemas Agroforestales - Departament d'Ecosistemes Agroforestals | es_ES |
dc.description.bibliographicCitation | Gil, R.; Zayoud, D.; Ouerghi, Z.; Boscaiu, M.; Vicente, O.; Neffati, M. (2021). Adaptive responses to drought of two Retama raetam subspecies from Tunisia. Journal of Plant Ecology. 14(3):527-540. https://doi.org/10.1093/jpe/rtab007 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1093/jpe/rtab007 | es_ES |
dc.description.upvformatpinicio | 527 | es_ES |
dc.description.upvformatpfin | 540 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 14 | es_ES |
dc.description.issue | 3 | es_ES |
dc.relation.pasarela | S\438094 | es_ES |
dc.contributor.funder | Universitat Politècnica de València | es_ES |
dc.contributor.funder | Ministère de l'Enseignement Supérieur et de la Recherche Scientifique, Túnez | es_ES |