Do photosynthetic metabolism and habitat influence foliar water uptake in orchids?
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
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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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 |
|
_version_ |
1808128722258100224 |