Leaf gas exchange and carbohydrates in tropical trees differing in successional status in two light environments in central Amazonia
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , |
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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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 |
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Instituto Nacional de Pesquisas da Amazônia (INPA) |
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INPA |
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INPA |
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Repositório Institucional do INPA |
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Repositório Institucional do INPA |
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https://repositorio.inpa.gov.br/bitstream/1/16421/1/artigo-inpa.pdf |
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Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA) |
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