Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species
[EN] The increasing frequency and intensity of drought periods is a serious threat for agriculture, prompting research to select and develop crop species and cultivars with enhanced water stress tolerance. Drought responses were studied in four ornamental Sedum species under controlled greenhouse co...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/158945 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/158945 |
| Access Level: | acceso abierto |
| Palabra clave: | Succulence Water déficit Osmolytes Antioxidants Growth response BOTANICA BIOQUIMICA Y BIOLOGIA MOLECULAR |
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Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) speciesKozminska, AleksandraAl Hassan, MohamadWiszniewska, AlinaHanus-Fajerska, EwaBoscaiu, Monica|||0000-0002-9691-4223Vicente, Oscar|||0000-0001-5076-3784SucculenceWater déficitOsmolytesAntioxidantsGrowth responseBOTANICABIOQUIMICA Y BIOLOGIA MOLECULAR[EN] The increasing frequency and intensity of drought periods is a serious threat for agriculture, prompting research to select and develop crop species and cultivars with enhanced water stress tolerance. Drought responses were studied in four ornamental Sedum species under controlled greenhouse conditions, by withholding watering of the plants for four weeks. Determination of growth parameters (stem length, fresh weight) allowed establishing the relative degree of tolerance of the selected species as S. spurium>S. ochroleucum>S. sediforme>S. album. The levels of photosynthetic pigments (chlorophylls a and b and total carotenoids), oxidative stress [using malondialdehyde (MDA) as a marker], non-enzymatic antioxidants (total phenolic compounds and total flavonoids) and putative osmolytes [proline (Pro) and total soluble sugars] were measured in leaves of control and stressed plants, to correlate drought tolerance with the activation of specific response mechanisms. The results obtained indicate that a higher tolerance to water deficit in Sedum is associated with: a) relatively lower stressinduced degradation of chlorophylls and carotenoids, especially of the latter (which did not decrease in waterstressed plants of S. spurium, the most tolerant species, whereas it was reduced to about 40% of the control in S. album, the most sensitive); b) no increase in MDA levels, reflecting the lack of drought-induced oxidative stress; and c) higher Pro contents in the non-stressed controls of the taxa most resistant to drought, which could be the basis of constitutive mechanisms of tolerance. However, Pro contribution to drought tolerance in Sedum must be based on an `osmoprotectant¿ role, as its concentrations, below 16 ¿mol g¿1 DW in all cases, are too low to have any significant osmotic effect. The identification of these biochemical markers of drought tolerance should help to develop rapid and efficient screening procedures to select Sedum taxa with enhanced tolerance when comparing different species within the genus, or different cultivars within a given species.The work was supported in part by the Ministry of Science and Higher Education of The Republic of Poland as DS 3500/ZBiFR-IBRiB-WBiO-UR and the Erasmus + Programme granted for Aleksandra Koimitiska to complete her doctoral studies.ElsevierDepartamento de Ecosistemas AgroforestalesDepartamento de BiotecnologíaInstituto Universitario de Conservación y Mejora de la Agrodiversidad ValencianaInstituto Agroforestal MediterráneoEscuela Técnica Superior de Ingeniería Agronómica y del Medio NaturalMinistry of Science and Higher Education, PoloniaRepositorio Institucional de la Universitat Politècnica de València Riunet20192019-01-03journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/158945reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinistry of Science and Higher Education, Polonia https://doi.org/10.13039/501100004569 DS 3500%2FZBiFR-IBRiB-WBiOopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1589452026-06-13T07:49:27Z |
| dc.title.none.fl_str_mv |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| title |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| spellingShingle |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species Kozminska, Aleksandra Succulence Water déficit Osmolytes Antioxidants Growth response BOTANICA BIOQUIMICA Y BIOLOGIA MOLECULAR |
| title_short |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| title_full |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| title_fullStr |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| title_full_unstemmed |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| title_sort |
Responses of succulents to drought: Comparative analysis of four Sedum (Crassulaceae) species |
| dc.creator.none.fl_str_mv |
Kozminska, Aleksandra Al Hassan, Mohamad Wiszniewska, Alina Hanus-Fajerska, Ewa Boscaiu, Monica|||0000-0002-9691-4223 Vicente, Oscar|||0000-0001-5076-3784 |
| author |
Kozminska, Aleksandra |
| author_facet |
Kozminska, Aleksandra Al Hassan, Mohamad Wiszniewska, Alina Hanus-Fajerska, Ewa Boscaiu, Monica|||0000-0002-9691-4223 Vicente, Oscar|||0000-0001-5076-3784 |
| author_role |
author |
| author2 |
Al Hassan, Mohamad Wiszniewska, Alina Hanus-Fajerska, Ewa Boscaiu, Monica|||0000-0002-9691-4223 Vicente, Oscar|||0000-0001-5076-3784 |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
Departamento de Ecosistemas Agroforestales Departamento de Biotecnología Instituto Universitario de Conservación y Mejora de la Agrodiversidad Valenciana Instituto Agroforestal Mediterráneo Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural Ministry of Science and Higher Education, Polonia Repositorio Institucional de la Universitat Politècnica de València Riunet |
| dc.subject.none.fl_str_mv |
Succulence Water déficit Osmolytes Antioxidants Growth response BOTANICA BIOQUIMICA Y BIOLOGIA MOLECULAR |
| topic |
Succulence Water déficit Osmolytes Antioxidants Growth response BOTANICA BIOQUIMICA Y BIOLOGIA MOLECULAR |
| description |
[EN] The increasing frequency and intensity of drought periods is a serious threat for agriculture, prompting research to select and develop crop species and cultivars with enhanced water stress tolerance. Drought responses were studied in four ornamental Sedum species under controlled greenhouse conditions, by withholding watering of the plants for four weeks. Determination of growth parameters (stem length, fresh weight) allowed establishing the relative degree of tolerance of the selected species as S. spurium>S. ochroleucum>S. sediforme>S. album. The levels of photosynthetic pigments (chlorophylls a and b and total carotenoids), oxidative stress [using malondialdehyde (MDA) as a marker], non-enzymatic antioxidants (total phenolic compounds and total flavonoids) and putative osmolytes [proline (Pro) and total soluble sugars] were measured in leaves of control and stressed plants, to correlate drought tolerance with the activation of specific response mechanisms. The results obtained indicate that a higher tolerance to water deficit in Sedum is associated with: a) relatively lower stressinduced degradation of chlorophylls and carotenoids, especially of the latter (which did not decrease in waterstressed plants of S. spurium, the most tolerant species, whereas it was reduced to about 40% of the control in S. album, the most sensitive); b) no increase in MDA levels, reflecting the lack of drought-induced oxidative stress; and c) higher Pro contents in the non-stressed controls of the taxa most resistant to drought, which could be the basis of constitutive mechanisms of tolerance. However, Pro contribution to drought tolerance in Sedum must be based on an `osmoprotectant¿ role, as its concentrations, below 16 ¿mol g¿1 DW in all cases, are too low to have any significant osmotic effect. The identification of these biochemical markers of drought tolerance should help to develop rapid and efficient screening procedures to select Sedum taxa with enhanced tolerance when comparing different species within the genus, or different cultivars within a given species. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019 2019-01-03 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://riunet.upv.es/handle/10251/158945 |
| url |
https://riunet.upv.es/handle/10251/158945 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Ministry of Science and Higher Education, Polonia https://doi.org/10.13039/501100004569 DS 3500%2FZBiFR-IBRiB-WBiO |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Reserva de todos los derechos http://rightsstatements.org/vocab/InC/1.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Reserva de todos los derechos http://rightsstatements.org/vocab/InC/1.0/ |
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openAccess |
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application/pdf application/pdf |
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Elsevier |
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Elsevier |
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