Sensitivity of yellow passion fruit to ultraviolet‑B radiation

Detalhes bibliográficos
Autor(a) principal: Cechin, Inês
Data de Publicação: 2012
Outros Autores: Rocha, Valéria de Jesus, Fumis, Terezinha de Fátima
Tipo de documento: Artigo
Idioma: por
eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/12568
Resumo: The objective of this work was to evaluate the effects of UV‑B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV‑B radiation near the apex of the plants was 8 W m-2 for the UV‑B treatment (high UV‑B), and 0.8 W m-2 for the control plants (low UV‑B). Plants were irradiated with UV‑B for 7 hours per day, centered on solar noon, during 16 days. High UV‑B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV‑B absorbing compounds and anthocyanins was increased in the plants exposed to high UV‑B radiation, when compared with the control. UV‑B radiation did not affect stomatal conductance or transpiration rate, but reduced photosynthesis and instantaneous water‑use efficiency, and increased intercellular CO2 concentration. The accumulation of UV‑B‑absorbing compounds and anthocyanins did not effectively shield plants from supplementary UV‑B radiation, since the growth and photosynthetic processes were significantly reduced.
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spelling Sensitivity of yellow passion fruit to ultraviolet‑B radiationSensitividade do maracujazeiro‑amarelo à radiação ultravioleta‑BPassiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesisPassiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossínteseThe objective of this work was to evaluate the effects of UV‑B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV‑B radiation near the apex of the plants was 8 W m-2 for the UV‑B treatment (high UV‑B), and 0.8 W m-2 for the control plants (low UV‑B). Plants were irradiated with UV‑B for 7 hours per day, centered on solar noon, during 16 days. High UV‑B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV‑B absorbing compounds and anthocyanins was increased in the plants exposed to high UV‑B radiation, when compared with the control. UV‑B radiation did not affect stomatal conductance or transpiration rate, but reduced photosynthesis and instantaneous water‑use efficiency, and increased intercellular CO2 concentration. The accumulation of UV‑B‑absorbing compounds and anthocyanins did not effectively shield plants from supplementary UV‑B radiation, since the growth and photosynthetic processes were significantly reduced.O objetivo deste trabalho foi avaliar o efeito da radiação UV‑B no crescimento vegetativo e nas características das trocas gasosas de plantas de maracujazeiro‑amarelo (Passiflora edulis), cultivadas em casa de vegetação. A radiação média não ponderada de UV‑B próximo ao topo das plantas foi de 8 W m-2, para plantas tratadas com UV‑B (alta UV‑B), e de 0,8 W m-2 para plantas controle (baixa UV‑B). As plantas foram irradiadas com UV‑B por 7 horas por dia, centralizadas ao redor do meio‑dia, durante 16 dias. Alta radiação de UV‑B reduziu o acúmulo de matéria seca da parte aérea da planta. O conteúdo de compostos que absorvem UV‑B e de antocianinas foi aumentado nas plantas expostas à alta radiação UV‑B, quando comparado às plantas controle. A radiação UV‑B não alterou a condutância estomática ou a taxa de transpiração, mas reduziu a fotossíntese e a eficiência instantânea do uso da água, e aumentou a concentração intercelular de CO2. O acúmulo de compostos que absorvem UV‑B e antocianinas não protegeram de forma efetiva as plantas contra o aumento da radiação suplementar UV‑B, visto que o crescimento e os processos fotossintéticos foram significativamente reduzidos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCechin, InêsRocha, Valéria de JesusFumis, Terezinha de Fátima2012-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/12568Pesquisa Agropecuaria Brasileira; v.47, n.10, out. 2012; 1422-1427Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1422-14271678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporenghttps://seer.sct.embrapa.br/index.php/pab/article/view/12568/8137https://seer.sct.embrapa.br/index.php/pab/article/view/12568/8138https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12568/8243info:eu-repo/semantics/openAccess2012-12-04T20:46:39Zoai:ojs.seer.sct.embrapa.br:article/12568Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-12-04T20:46:39Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Sensitivity of yellow passion fruit to ultraviolet‑B radiation
Sensitividade do maracujazeiro‑amarelo à radiação ultravioleta‑B
title Sensitivity of yellow passion fruit to ultraviolet‑B radiation
spellingShingle Sensitivity of yellow passion fruit to ultraviolet‑B radiation
Cechin, Inês
Passiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesis
Passiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossíntese
title_short Sensitivity of yellow passion fruit to ultraviolet‑B radiation
title_full Sensitivity of yellow passion fruit to ultraviolet‑B radiation
title_fullStr Sensitivity of yellow passion fruit to ultraviolet‑B radiation
title_full_unstemmed Sensitivity of yellow passion fruit to ultraviolet‑B radiation
title_sort Sensitivity of yellow passion fruit to ultraviolet‑B radiation
author Cechin, Inês
author_facet Cechin, Inês
Rocha, Valéria de Jesus
Fumis, Terezinha de Fátima
author_role author
author2 Rocha, Valéria de Jesus
Fumis, Terezinha de Fátima
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Cechin, Inês
Rocha, Valéria de Jesus
Fumis, Terezinha de Fátima
dc.subject.por.fl_str_mv Passiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesis
Passiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossíntese
topic Passiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesis
Passiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossíntese
description The objective of this work was to evaluate the effects of UV‑B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV‑B radiation near the apex of the plants was 8 W m-2 for the UV‑B treatment (high UV‑B), and 0.8 W m-2 for the control plants (low UV‑B). Plants were irradiated with UV‑B for 7 hours per day, centered on solar noon, during 16 days. High UV‑B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV‑B absorbing compounds and anthocyanins was increased in the plants exposed to high UV‑B radiation, when compared with the control. UV‑B radiation did not affect stomatal conductance or transpiration rate, but reduced photosynthesis and instantaneous water‑use efficiency, and increased intercellular CO2 concentration. The accumulation of UV‑B‑absorbing compounds and anthocyanins did not effectively shield plants from supplementary UV‑B radiation, since the growth and photosynthetic processes were significantly reduced.
publishDate 2012
dc.date.none.fl_str_mv 2012-11-29
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/12568
url https://seer.sct.embrapa.br/index.php/pab/article/view/12568
dc.language.iso.fl_str_mv por
eng
language por
eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/12568/8137
https://seer.sct.embrapa.br/index.php/pab/article/view/12568/8138
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12568/8243
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.47, n.10, out. 2012; 1422-1427
Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1422-1427
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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