How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)

Detalhes bibliográficos
Autor(a) principal: Gerolamo, Caian Souza
Data de Publicação: 2022
Outros Autores: Fogaça, Mariana Dutra, Bastos, Carolina Lopes
Tipo de documento: preprint
Idioma: eng
Título da fonte: SciELO Preprints
Texto Completo: https://preprints.scielo.org/index.php/scielo/preprint/view/4775
Resumo: Lianas are woody climbers and their stems and leaves deal with different environmental pressures such as resistance to mechanical damage and dehydration. The damage resistance of plants can be biomechanically evaluated by their stiffness, bending and toughness. Despite the well-known relationship between physical resistance and moisture of plant organs in woody plants, this relationship is uncertain and has not been previously evaluated in lianas. Thus, this study investigated experimentally the effect of stems and leaf dehydration on the structural Young’s modulus in the stem and fracture toughness in leaves across time in the liana Amphilophium crucigerum (Bignoniaceae). Ten stem and leaf samples were collected and assigned to two distinct conditions: (i) samples kept moist and (ii) samples underwent gradual dehydration with natural moisture loss by air exposition. Successive measures of structural Young’s modulus and fracture toughness were taken every 4 hours during a 48-hour period for both conditions. Stem and leaf samples which underwent gradual dehydration showed greater bending stiffness and fracture toughness, respectively, while the samples kept moist presented no changes in any studied biomechanical features during the entire experiment. We concluded that the moisture of both stem and leaf samples are critical factors to estimate the biomechanical properties of lianas stem and leaves.
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spelling How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)Como a desidratação afeta a flexibilidade do caule e a tenacidade das folhas pós-coleta na liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)trepadeirafratura de folhabiomecânica vegetalflexibilidade do cauleMódulo de Youngclimbing plantleaf fractureplant biomechanicsstem flexibilityYoung’s modulusLianas are woody climbers and their stems and leaves deal with different environmental pressures such as resistance to mechanical damage and dehydration. The damage resistance of plants can be biomechanically evaluated by their stiffness, bending and toughness. Despite the well-known relationship between physical resistance and moisture of plant organs in woody plants, this relationship is uncertain and has not been previously evaluated in lianas. Thus, this study investigated experimentally the effect of stems and leaf dehydration on the structural Young’s modulus in the stem and fracture toughness in leaves across time in the liana Amphilophium crucigerum (Bignoniaceae). Ten stem and leaf samples were collected and assigned to two distinct conditions: (i) samples kept moist and (ii) samples underwent gradual dehydration with natural moisture loss by air exposition. Successive measures of structural Young’s modulus and fracture toughness were taken every 4 hours during a 48-hour period for both conditions. Stem and leaf samples which underwent gradual dehydration showed greater bending stiffness and fracture toughness, respectively, while the samples kept moist presented no changes in any studied biomechanical features during the entire experiment. We concluded that the moisture of both stem and leaf samples are critical factors to estimate the biomechanical properties of lianas stem and leaves.Lianas são trepadeiras lenhosas e seus caules e folhas lidam com diferentes pressões ambientais, como a resistência aos danos mecânicos e de desidratação. A resistência ao dano das plantas pode ser biomecanicamente avaliada pelas propiedades de dureza, flexão e tenacidade. Apesar da conhecida relação entre resistência física e umidade dos órgãos das plantas em espécies lenhosas, essa relação não foi avaliada anteriormente e é incerta em lianas. Assim, este estudo investigou experimentalmente o efeito da desidratação de caules e folhas na estimativa do módulo estrutural de Young do caule e da tenacidade à fratura da folha ao longo do tempo, na liana Amphilophium crucigerum (Bignoniaceae). Dez amostras de caules e folhas foram coletadas e distribuídas em duas condições distintas: (i) amostras mantidas úmidas e (ii) amostras em processo de desidratação gradativa com perda natural de umidade quando expostas ao ar. Medidas sucessivas do módulo de Young e da resistência à fratura dos órgãos foram tomadas a cada 4 horas durante um período de 48 horas em ambas as condições. Amostras de caule e folhas que sofreram desidratação gradual apresentaram maior rigidez à flexão e tenacidade à fratura, respectivamente, enquanto as amostras mantidas úmidas não alteraram essas características durante o experimento. Concluímos que a umidade das amostras de caules e folhas em lianas também é um fator crítico para estimar as propriedades biomecânicas desses órgãos em seu ambiente natural.SciELO PreprintsSciELO PreprintsSciELO Preprints2022-09-23info:eu-repo/semantics/preprintinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://preprints.scielo.org/index.php/scielo/preprint/view/477510.1590/2236-8906-59/2021enghttps://preprints.scielo.org/index.php/scielo/article/view/4775/9236Copyright (c) 2022 Caian Souza Gerolamo, Mariana Dutra Fogaça, Carolina Lopes Bastoshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessGerolamo, Caian SouzaFogaça, Mariana DutraBastos, Carolina Lopesreponame:SciELO Preprintsinstname:SciELOinstacron:SCI2022-09-22T20:09:04Zoai:ops.preprints.scielo.org:preprint/4775Servidor de preprintshttps://preprints.scielo.org/index.php/scieloONGhttps://preprints.scielo.org/index.php/scielo/oaiscielo.submission@scielo.orgopendoar:2022-09-22T20:09:04SciELO Preprints - SciELOfalse
dc.title.none.fl_str_mv How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
Como a desidratação afeta a flexibilidade do caule e a tenacidade das folhas pós-coleta na liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
title How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
spellingShingle How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
Gerolamo, Caian Souza
trepadeira
fratura de folha
biomecânica vegetal
flexibilidade do caule
Módulo de Young
climbing plant
leaf fracture
plant biomechanics
stem flexibility
Young’s modulus
title_short How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
title_full How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
title_fullStr How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
title_full_unstemmed How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
title_sort How dehydration affects stem bending stiffness and leaf toughness after sampling of the liana Amphilophium crucigerum (L.) L.G.Lohmann (Bignoniaceae)
author Gerolamo, Caian Souza
author_facet Gerolamo, Caian Souza
Fogaça, Mariana Dutra
Bastos, Carolina Lopes
author_role author
author2 Fogaça, Mariana Dutra
Bastos, Carolina Lopes
author2_role author
author
dc.contributor.author.fl_str_mv Gerolamo, Caian Souza
Fogaça, Mariana Dutra
Bastos, Carolina Lopes
dc.subject.por.fl_str_mv trepadeira
fratura de folha
biomecânica vegetal
flexibilidade do caule
Módulo de Young
climbing plant
leaf fracture
plant biomechanics
stem flexibility
Young’s modulus
topic trepadeira
fratura de folha
biomecânica vegetal
flexibilidade do caule
Módulo de Young
climbing plant
leaf fracture
plant biomechanics
stem flexibility
Young’s modulus
description Lianas are woody climbers and their stems and leaves deal with different environmental pressures such as resistance to mechanical damage and dehydration. The damage resistance of plants can be biomechanically evaluated by their stiffness, bending and toughness. Despite the well-known relationship between physical resistance and moisture of plant organs in woody plants, this relationship is uncertain and has not been previously evaluated in lianas. Thus, this study investigated experimentally the effect of stems and leaf dehydration on the structural Young’s modulus in the stem and fracture toughness in leaves across time in the liana Amphilophium crucigerum (Bignoniaceae). Ten stem and leaf samples were collected and assigned to two distinct conditions: (i) samples kept moist and (ii) samples underwent gradual dehydration with natural moisture loss by air exposition. Successive measures of structural Young’s modulus and fracture toughness were taken every 4 hours during a 48-hour period for both conditions. Stem and leaf samples which underwent gradual dehydration showed greater bending stiffness and fracture toughness, respectively, while the samples kept moist presented no changes in any studied biomechanical features during the entire experiment. We concluded that the moisture of both stem and leaf samples are critical factors to estimate the biomechanical properties of lianas stem and leaves.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-23
dc.type.driver.fl_str_mv info:eu-repo/semantics/preprint
info:eu-repo/semantics/publishedVersion
format preprint
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://preprints.scielo.org/index.php/scielo/preprint/view/4775
10.1590/2236-8906-59/2021
url https://preprints.scielo.org/index.php/scielo/preprint/view/4775
identifier_str_mv 10.1590/2236-8906-59/2021
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://preprints.scielo.org/index.php/scielo/article/view/4775/9236
dc.rights.driver.fl_str_mv Copyright (c) 2022 Caian Souza Gerolamo, Mariana Dutra Fogaça, Carolina Lopes Bastos
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 Caian Souza Gerolamo, Mariana Dutra Fogaça, Carolina Lopes Bastos
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv SciELO Preprints
SciELO Preprints
SciELO Preprints
publisher.none.fl_str_mv SciELO Preprints
SciELO Preprints
SciELO Preprints
dc.source.none.fl_str_mv reponame:SciELO Preprints
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instname_str SciELO
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repository.name.fl_str_mv SciELO Preprints - SciELO
repository.mail.fl_str_mv scielo.submission@scielo.org
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