Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.contributorDesenvolvimento Sustentável-
Autor(es): dc.contributorCentro de Isótopos Estáveis Prof. Dr. Carlos Ducatti-
Autor(es): dc.creatorLima, J. F.-
Autor(es): dc.creatorBoanares, D.-
Autor(es): dc.creatorCosta, V. E.-
Autor(es): dc.creatorMoreira, A. S.F.P.-
Data de aceite: dc.date.accessioned2025-08-21T17:35:47Z-
Data de disponibilização: dc.date.available2025-08-21T17:35:47Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/plb.13499-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/246651-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/246651-
Descrição: dc.descriptionEpiphytic and rupicolous plants inhabit environments with limited water resources. Such plants commonly use Crassulacean Acid Metabolism (CAM), a photosynthetic pathway that accumulates organic acids in cell vacuoles at night, so reducing their leaf water potential and favouring water absorption. Foliar water uptake (FWU) aids plant survival during drought events in environments with high water deficits. We hypothesized that FWU represents a strategy employed by epiphytic and rupicolous orchids for water acquisition and that CAM will favour increased water absorption. We examined 6 epiphyte, 4 terrestrial and 6 rupicolous orchids that use C3 (n = 9) or CAM (n = 7) pathways. Five individuals per species were used to evaluate FWU, structural characteristics and leaf water balance. Rupicolous species with C3 metabolism had higher FWU than other species. FWU (Cmax and k) could be related to succulence, SLM and leaf RWC. The results indicated that high orchid leaf densities favoured FWU, as area available for water storage increases with leaf density. Structural characteristics linked to water storage (e.g. high RWC, succulence), on the other hand, could limit leaf water absorption by favouring high internal leaf water potentials. Epiphytic, rupicolous and terrestrial orchids showed FWU. Rupicolous species had high levels of FWU, probably through absorption from mist. However, succulence in plants with CAM appears to mitigate FWU.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionInstituto de Biologia Universidade Federal de Uberlândia-
Descrição: dc.descriptionInstituto Tecnológico Vale Desenvolvimento Sustentável-
Descrição: dc.descriptionInstituto de Biociências Centro de Isótopos Estáveis Prof. Dr. Carlos Ducatti-
Descrição: dc.descriptionCNPq: n°309044/2021-9-
Formato: dc.format257-267-
Idioma: dc.languageen-
Relação: dc.relationPlant Biology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAdaptive strategies-
Palavras-chave: dc.subjectleaf traits-
Palavras-chave: dc.subjectOrchidaceae-
Palavras-chave: dc.subjectphotosynthesis-
Palavras-chave: dc.subjectwater relations-
Título: dc.titleDo photosynthetic metabolism and habitat influence foliar water uptake in orchids?-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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