Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia

Detalhes bibliográficos
Autor(a) principal: Marenco, R. A.
Data de Publicação: 2001
Outros Autores: Gonçalves, José Francisco Carvalho de, Vieira, Gil
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/16421
Resumo: Monoculture and mixed stands of mahogany (Swietenia macrophylla King) and tonka bean (Dipteryx odorata Willd.) trees were established on degraded land in central Amazonia to compare leaf gas exchange parameters between plants grown in sunlight in an open field and in shade beneath a balsa wood (Ochroma pyramidale Cav.) canopy. Shading increased specific leaf area by about 50% in both species. Shading reduced height and diameter growth of S. macrophylla, whereas it increased these parameters for D. odorata. Light-saturated photosynthesis (Amax), stomatal conductance (gs) and transpiration (E) were higher in S. macrophylla than in D. odorata. In S. macrophylla, Amax was higher in sun leaves (12.9 ± 0.9 μmol m-2 s-1) than in shade leaves (10.2 ± 1.0 μmol m-2 s-1), whereas light environment had no significant effect on Amax of D. odorata. In both species, CO2-saturated photosynthesis (Apot) was higher in sun leaves (22 ± 1.4 μmol m-2 s-1) than in shade leaves (17-20 ± 0.8 μmol m-2 s-1). Stomatal conductance and E increased in sun leaves of S. macrophylla by 45 and 38%, respectively, whereas light environment did not affect gs and E of D. odorata. Photorespiration rates (Pr) varied from 28 to 36% of net photosynthesis (A) at ambient atmospheric CO2 concentration (Ca) but declined to around 7% of A at higher Ca. Leaf dark respiration (Rd) and the CO2 compensation point (Γ) were lower in shade-grown plants than in open-grown plants. Compared with shade-grown plants, total nonstructural carbohydrate (TNC) concentrations increased by 56% in S. macrophylla and by 30% in D. odorata in the open field. Leaf nitrogen (NL) concentrations were higher in open-grown plants than in shade-grown plants of both species, and TNC and NL concentrations were negatively correlated (r = -0.77). High TNC accumulation in S. macrophylla in the open field suggests that photosynthesis is unlikely to be growth-limiting at this site. We conclude that photosynthetic parameters of D. odorata are less affected by light environment than those of S. macrophylla, indicating that D. odorata has lower physiological plasticity to light than S. macrophylla.
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spelling Marenco, R. A.Gonçalves, José Francisco Carvalho deVieira, Gil2020-06-04T15:17:44Z2020-06-04T15:17:44Z2001https://repositorio.inpa.gov.br/handle/1/1642110.1093/treephys/21.18.1311Monoculture and mixed stands of mahogany (Swietenia macrophylla King) and tonka bean (Dipteryx odorata Willd.) trees were established on degraded land in central Amazonia to compare leaf gas exchange parameters between plants grown in sunlight in an open field and in shade beneath a balsa wood (Ochroma pyramidale Cav.) canopy. Shading increased specific leaf area by about 50% in both species. Shading reduced height and diameter growth of S. macrophylla, whereas it increased these parameters for D. odorata. Light-saturated photosynthesis (Amax), stomatal conductance (gs) and transpiration (E) were higher in S. macrophylla than in D. odorata. In S. macrophylla, Amax was higher in sun leaves (12.9 ± 0.9 μmol m-2 s-1) than in shade leaves (10.2 ± 1.0 μmol m-2 s-1), whereas light environment had no significant effect on Amax of D. odorata. In both species, CO2-saturated photosynthesis (Apot) was higher in sun leaves (22 ± 1.4 μmol m-2 s-1) than in shade leaves (17-20 ± 0.8 μmol m-2 s-1). Stomatal conductance and E increased in sun leaves of S. macrophylla by 45 and 38%, respectively, whereas light environment did not affect gs and E of D. odorata. Photorespiration rates (Pr) varied from 28 to 36% of net photosynthesis (A) at ambient atmospheric CO2 concentration (Ca) but declined to around 7% of A at higher Ca. Leaf dark respiration (Rd) and the CO2 compensation point (Γ) were lower in shade-grown plants than in open-grown plants. Compared with shade-grown plants, total nonstructural carbohydrate (TNC) concentrations increased by 56% in S. macrophylla and by 30% in D. odorata in the open field. Leaf nitrogen (NL) concentrations were higher in open-grown plants than in shade-grown plants of both species, and TNC and NL concentrations were negatively correlated (r = -0.77). High TNC accumulation in S. macrophylla in the open field suggests that photosynthesis is unlikely to be growth-limiting at this site. We conclude that photosynthetic parameters of D. odorata are less affected by light environment than those of S. macrophylla, indicating that D. odorata has lower physiological plasticity to light than S. macrophylla.Volume 21, Número 18, Pags. 1311-1318Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessCarbohydrateGas ExchangeLightPhotosynthesisShadingAmazoniaBrasilDipteryx OdorataDipteryx OdorataOchroma PyramidaleOchroma PyramidalePhaseolus (angiosperm)SwieteniaSwietenia MacrophyllaSwietenia MacrophyllaCarbohydrateCarbon DioxideAngiospermBrasilLegumeLightMeliaceaePhotosynthesisPhysiologyPlant LeafSweatingTreeBrasilCarbohydratesCarbon DioxideFabaceaeLightMalvaceaeMeliaceaePhotosynthesisPlant LeavesPlant TranspirationSupport, Non-u.S. Gov'tTreesLeaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazoniainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleTree Physiologyengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfartigo-inpa.pdfapplication/pdf165885https://repositorio.inpa.gov.br/bitstream/1/16421/1/artigo-inpa.pdf5ce29a7d30704f70511f9d2e3ea2b078MD511/164212020-06-04 11:22:33.131oai:repositorio:1/16421Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-06-04T15:22:33Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.en.fl_str_mv Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
title Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
spellingShingle Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
Marenco, R. A.
Carbohydrate
Gas Exchange
Light
Photosynthesis
Shading
Amazonia
Brasil
Dipteryx Odorata
Dipteryx Odorata
Ochroma Pyramidale
Ochroma Pyramidale
Phaseolus (angiosperm)
Swietenia
Swietenia Macrophylla
Swietenia Macrophylla
Carbohydrate
Carbon Dioxide
Angiosperm
Brasil
Legume
Light
Meliaceae
Photosynthesis
Physiology
Plant Leaf
Sweating
Tree
Brasil
Carbohydrates
Carbon Dioxide
Fabaceae
Light
Malvaceae
Meliaceae
Photosynthesis
Plant Leaves
Plant Transpiration
Support, Non-u.S. Gov't
Trees
title_short Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
title_full Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
title_fullStr Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
title_full_unstemmed Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
title_sort Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
author Marenco, R. A.
author_facet Marenco, R. A.
Gonçalves, José Francisco Carvalho de
Vieira, Gil
author_role author
author2 Gonçalves, José Francisco Carvalho de
Vieira, Gil
author2_role author
author
dc.contributor.author.fl_str_mv Marenco, R. A.
Gonçalves, José Francisco Carvalho de
Vieira, Gil
dc.subject.eng.fl_str_mv Carbohydrate
Gas Exchange
Light
Photosynthesis
Shading
Amazonia
Brasil
Dipteryx Odorata
Dipteryx Odorata
Ochroma Pyramidale
Ochroma Pyramidale
Phaseolus (angiosperm)
Swietenia
Swietenia Macrophylla
Swietenia Macrophylla
Carbohydrate
Carbon Dioxide
Angiosperm
Brasil
Legume
Light
Meliaceae
Photosynthesis
Physiology
Plant Leaf
Sweating
Tree
Brasil
Carbohydrates
Carbon Dioxide
Fabaceae
Light
Malvaceae
Meliaceae
Photosynthesis
Plant Leaves
Plant Transpiration
Support, Non-u.S. Gov't
Trees
topic Carbohydrate
Gas Exchange
Light
Photosynthesis
Shading
Amazonia
Brasil
Dipteryx Odorata
Dipteryx Odorata
Ochroma Pyramidale
Ochroma Pyramidale
Phaseolus (angiosperm)
Swietenia
Swietenia Macrophylla
Swietenia Macrophylla
Carbohydrate
Carbon Dioxide
Angiosperm
Brasil
Legume
Light
Meliaceae
Photosynthesis
Physiology
Plant Leaf
Sweating
Tree
Brasil
Carbohydrates
Carbon Dioxide
Fabaceae
Light
Malvaceae
Meliaceae
Photosynthesis
Plant Leaves
Plant Transpiration
Support, Non-u.S. Gov't
Trees
description Monoculture and mixed stands of mahogany (Swietenia macrophylla King) and tonka bean (Dipteryx odorata Willd.) trees were established on degraded land in central Amazonia to compare leaf gas exchange parameters between plants grown in sunlight in an open field and in shade beneath a balsa wood (Ochroma pyramidale Cav.) canopy. Shading increased specific leaf area by about 50% in both species. Shading reduced height and diameter growth of S. macrophylla, whereas it increased these parameters for D. odorata. Light-saturated photosynthesis (Amax), stomatal conductance (gs) and transpiration (E) were higher in S. macrophylla than in D. odorata. In S. macrophylla, Amax was higher in sun leaves (12.9 ± 0.9 μmol m-2 s-1) than in shade leaves (10.2 ± 1.0 μmol m-2 s-1), whereas light environment had no significant effect on Amax of D. odorata. In both species, CO2-saturated photosynthesis (Apot) was higher in sun leaves (22 ± 1.4 μmol m-2 s-1) than in shade leaves (17-20 ± 0.8 μmol m-2 s-1). Stomatal conductance and E increased in sun leaves of S. macrophylla by 45 and 38%, respectively, whereas light environment did not affect gs and E of D. odorata. Photorespiration rates (Pr) varied from 28 to 36% of net photosynthesis (A) at ambient atmospheric CO2 concentration (Ca) but declined to around 7% of A at higher Ca. Leaf dark respiration (Rd) and the CO2 compensation point (Γ) were lower in shade-grown plants than in open-grown plants. Compared with shade-grown plants, total nonstructural carbohydrate (TNC) concentrations increased by 56% in S. macrophylla and by 30% in D. odorata in the open field. Leaf nitrogen (NL) concentrations were higher in open-grown plants than in shade-grown plants of both species, and TNC and NL concentrations were negatively correlated (r = -0.77). High TNC accumulation in S. macrophylla in the open field suggests that photosynthesis is unlikely to be growth-limiting at this site. We conclude that photosynthetic parameters of D. odorata are less affected by light environment than those of S. macrophylla, indicating that D. odorata has lower physiological plasticity to light than S. macrophylla.
publishDate 2001
dc.date.issued.fl_str_mv 2001
dc.date.accessioned.fl_str_mv 2020-06-04T15:17:44Z
dc.date.available.fl_str_mv 2020-06-04T15:17:44Z
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 https://repositorio.inpa.gov.br/handle/1/16421
dc.identifier.doi.none.fl_str_mv 10.1093/treephys/21.18.1311
url https://repositorio.inpa.gov.br/handle/1/16421
identifier_str_mv 10.1093/treephys/21.18.1311
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Volume 21, Número 18, Pags. 1311-1318
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Tree Physiology
publisher.none.fl_str_mv Tree Physiology
dc.source.none.fl_str_mv reponame:Repositório Institucional do INPA
instname:Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
instname_str Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron_str INPA
institution INPA
reponame_str Repositório Institucional do INPA
collection Repositório Institucional do INPA
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