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

Detalhes bibliográficos
Autor(a) principal: Lima, J. F.
Data de Publicação: 2023
Outros Autores: Boanares, D., Costa, V. E., Moreira, A. S.F.P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1111/plb.13499
http://hdl.handle.net/11449/246651
Resumo: Epiphytic 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.
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spelling Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?Adaptive strategiesleaf traitsOrchidaceaephotosynthesiswater relationsEpiphytic 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.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Instituto de Biologia Universidade Federal de UberlândiaInstituto Tecnológico Vale Desenvolvimento SustentávelInstituto de Biociências Centro de Isótopos Estáveis Prof. Dr. Carlos DucattiCNPq: n°309044/2021-9Universidade Federal de Uberlândia (UFU)Desenvolvimento SustentávelCentro de Isótopos Estáveis Prof. Dr. Carlos DucattiLima, J. F.Boanares, D.Costa, V. E.Moreira, A. S.F.P.2023-07-29T12:46:47Z2023-07-29T12:46:47Z2023-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article257-267http://dx.doi.org/10.1111/plb.13499Plant Biology, v. 25, n. 2, p. 257-267, 2023.1438-86771435-8603http://hdl.handle.net/11449/24665110.1111/plb.134992-s2.0-85146297467Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlant Biologyinfo:eu-repo/semantics/openAccess2023-07-29T12:46:47Zoai:repositorio.unesp.br:11449/246651Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:55:32.064980Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
title Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
spellingShingle Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
Lima, J. F.
Adaptive strategies
leaf traits
Orchidaceae
photosynthesis
water relations
title_short Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
title_full Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
title_fullStr Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
title_full_unstemmed Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
title_sort Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
author Lima, J. F.
author_facet Lima, J. F.
Boanares, D.
Costa, V. E.
Moreira, A. S.F.P.
author_role author
author2 Boanares, D.
Costa, V. E.
Moreira, A. S.F.P.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Uberlândia (UFU)
Desenvolvimento Sustentável
Centro de Isótopos Estáveis Prof. Dr. Carlos Ducatti
dc.contributor.author.fl_str_mv Lima, J. F.
Boanares, D.
Costa, V. E.
Moreira, A. S.F.P.
dc.subject.por.fl_str_mv Adaptive strategies
leaf traits
Orchidaceae
photosynthesis
water relations
topic Adaptive strategies
leaf traits
Orchidaceae
photosynthesis
water relations
description Epiphytic 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.
publishDate 2023
dc.date.none.fl_str_mv 2023-07-29T12:46:47Z
2023-07-29T12:46:47Z
2023-03-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1111/plb.13499
Plant Biology, v. 25, n. 2, p. 257-267, 2023.
1438-8677
1435-8603
http://hdl.handle.net/11449/246651
10.1111/plb.13499
2-s2.0-85146297467
url http://dx.doi.org/10.1111/plb.13499
http://hdl.handle.net/11449/246651
identifier_str_mv Plant Biology, v. 25, n. 2, p. 257-267, 2023.
1438-8677
1435-8603
10.1111/plb.13499
2-s2.0-85146297467
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Plant Biology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 257-267
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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