The role of morpho-physiological traits in frost tolerance of neotropical savanna trees
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00468-021-02150-7 http://hdl.handle.net/11449/228993 |
Resumo: | Key Message: Frost-sensitive and frost-resistant Cerrado tree species differ in their morphological and physiological traits, which are linked with their resprout strategies and can affect their persistence under recurrent frost events. Abstract: Although fire is the most common disturbance affecting neotropical savannas, frost events are locally common and are sometimes severe enough to cause dieback of savanna trees at their southern limit of distribution. However, it is yet to be elucidated how physiology and morphology determine which species are frost sensitive. In this study, we evaluated morphological and physiological responses of trees to controlled low temperatures and to a severe frost event that occurred in 2016 at savanna sites of Southeastern Brazil. We determined the degree of bud protection, branch bark thickness, resprout strategies, and recovery of height and biomass 1 year after frost occurrence, and we performed an experiment to measure the photosynthetic capacity of leaves after exposure to low temperatures. We found that frost-sensitive species had unprotected buds, but were able to recover their lost biomass 1 year after frost. Frost-resistant species had buds with a greater degree of protection and maintained higher photosynthetic capacity under sub-zero temperatures. We did not find any differences in bark thickness between frost-resistant and frost-sensitive species. Frost-resistant and frost-sensitive species had different strategies to persist under frost events; however, if frost were more frequent, it could severely affect the height and carbon gain of sensitive species. |
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The role of morpho-physiological traits in frost tolerance of neotropical savanna treesCerradoChlorophyll fluorescenceDisturbanceFrostKey Message: Frost-sensitive and frost-resistant Cerrado tree species differ in their morphological and physiological traits, which are linked with their resprout strategies and can affect their persistence under recurrent frost events. Abstract: Although fire is the most common disturbance affecting neotropical savannas, frost events are locally common and are sometimes severe enough to cause dieback of savanna trees at their southern limit of distribution. However, it is yet to be elucidated how physiology and morphology determine which species are frost sensitive. In this study, we evaluated morphological and physiological responses of trees to controlled low temperatures and to a severe frost event that occurred in 2016 at savanna sites of Southeastern Brazil. We determined the degree of bud protection, branch bark thickness, resprout strategies, and recovery of height and biomass 1 year after frost occurrence, and we performed an experiment to measure the photosynthetic capacity of leaves after exposure to low temperatures. We found that frost-sensitive species had unprotected buds, but were able to recover their lost biomass 1 year after frost. Frost-resistant species had buds with a greater degree of protection and maintained higher photosynthetic capacity under sub-zero temperatures. We did not find any differences in bark thickness between frost-resistant and frost-sensitive species. Frost-resistant and frost-sensitive species had different strategies to persist under frost events; however, if frost were more frequent, it could severely affect the height and carbon gain of sensitive species.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Center for Hierarchical Manufacturing, National Science FoundationCenter for Selective C-H Functionalization, National Science FoundationNational Science FoundationPrograma de Pós-Graduação Em Ecologia E Biodiversidade Instituto de Biociências de Rio Claro Universidade Estadual Paulista UNESP, Av. 24A 1515Department of Plant and Microbial Biology North Carolina State University, Campus Box 7612Departamento de Biologia Faculdade de Ciências Agrárias E Veterinárias de Jaboticabal Universidade Estadual Paulista UNESP, Via de Acesso Prof. Paulo Donatto Castellane S/N, Vila IndustrialPrograma de Pós-Graduação Em Ecologia E Biodiversidade Instituto de Biociências de Rio Claro Universidade Estadual Paulista UNESP, Av. 24A 1515Departamento de Biologia Faculdade de Ciências Agrárias E Veterinárias de Jaboticabal Universidade Estadual Paulista UNESP, Via de Acesso Prof. Paulo Donatto Castellane S/N, Vila IndustrialCNPq: 302897/2018-6Center for Hierarchical Manufacturing, National Science Foundation: DEB1354943Center for Selective C-H Functionalization, National Science Foundation: DEB1354943National Science Foundation: DEB1354943Universidade Estadual Paulista (UNESP)North Carolina State UniversityDe Antonio, Ariadne C. [UNESP]Hoffmann, William A.Rossatto, Davi R. [UNESP]2022-04-29T08:29:41Z2022-04-29T08:29:41Z2021-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1687-1696http://dx.doi.org/10.1007/s00468-021-02150-7Trees - Structure and Function, v. 35, n. 5, p. 1687-1696, 2021.0931-1890http://hdl.handle.net/11449/22899310.1007/s00468-021-02150-72-s2.0-85108207721Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTrees - Structure and Functioninfo:eu-repo/semantics/openAccess2024-06-06T13:03:31Zoai:repositorio.unesp.br:11449/228993Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:18:35.899574Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
title |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
spellingShingle |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees De Antonio, Ariadne C. [UNESP] Cerrado Chlorophyll fluorescence Disturbance Frost |
title_short |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
title_full |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
title_fullStr |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
title_full_unstemmed |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
title_sort |
The role of morpho-physiological traits in frost tolerance of neotropical savanna trees |
author |
De Antonio, Ariadne C. [UNESP] |
author_facet |
De Antonio, Ariadne C. [UNESP] Hoffmann, William A. Rossatto, Davi R. [UNESP] |
author_role |
author |
author2 |
Hoffmann, William A. Rossatto, Davi R. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) North Carolina State University |
dc.contributor.author.fl_str_mv |
De Antonio, Ariadne C. [UNESP] Hoffmann, William A. Rossatto, Davi R. [UNESP] |
dc.subject.por.fl_str_mv |
Cerrado Chlorophyll fluorescence Disturbance Frost |
topic |
Cerrado Chlorophyll fluorescence Disturbance Frost |
description |
Key Message: Frost-sensitive and frost-resistant Cerrado tree species differ in their morphological and physiological traits, which are linked with their resprout strategies and can affect their persistence under recurrent frost events. Abstract: Although fire is the most common disturbance affecting neotropical savannas, frost events are locally common and are sometimes severe enough to cause dieback of savanna trees at their southern limit of distribution. However, it is yet to be elucidated how physiology and morphology determine which species are frost sensitive. In this study, we evaluated morphological and physiological responses of trees to controlled low temperatures and to a severe frost event that occurred in 2016 at savanna sites of Southeastern Brazil. We determined the degree of bud protection, branch bark thickness, resprout strategies, and recovery of height and biomass 1 year after frost occurrence, and we performed an experiment to measure the photosynthetic capacity of leaves after exposure to low temperatures. We found that frost-sensitive species had unprotected buds, but were able to recover their lost biomass 1 year after frost. Frost-resistant species had buds with a greater degree of protection and maintained higher photosynthetic capacity under sub-zero temperatures. We did not find any differences in bark thickness between frost-resistant and frost-sensitive species. Frost-resistant and frost-sensitive species had different strategies to persist under frost events; however, if frost were more frequent, it could severely affect the height and carbon gain of sensitive species. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-10-01 2022-04-29T08:29:41Z 2022-04-29T08:29:41Z |
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/10.1007/s00468-021-02150-7 Trees - Structure and Function, v. 35, n. 5, p. 1687-1696, 2021. 0931-1890 http://hdl.handle.net/11449/228993 10.1007/s00468-021-02150-7 2-s2.0-85108207721 |
url |
http://dx.doi.org/10.1007/s00468-021-02150-7 http://hdl.handle.net/11449/228993 |
identifier_str_mv |
Trees - Structure and Function, v. 35, n. 5, p. 1687-1696, 2021. 0931-1890 10.1007/s00468-021-02150-7 2-s2.0-85108207721 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Trees - Structure and Function |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1687-1696 |
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_ |
1808129505965899776 |