Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration

Detalhes bibliográficos
Autor(a) principal: Scalon, Silvana de Paula Quintão
Data de Publicação: 2015
Outros Autores: Kodama, Fávia Mitsuko, Dresch, Daiane Mugnol, Mussury, Rosilda Mara, Pereira, Zefa Valdivina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/26088
Resumo: Considering the wide distribution of Hancornia speciosa Gomes in the Brazilian savanna, environment with irregular distribution of rainfall, it is believed that their seedlings can be cultivated for a few days under water restriction, information that can stimulate the use of this species in restoration or planting for sustainable exploration programs. The present study evaluated the gas exchange and photosynthetic activities of H. speciosa seedlings and examined their tolerance to water deficit and their metabolic recovery after rehydration. We evaluated the photosynthetic rate, internal carbon concentration, transpiration rate, stomatal conductance, water-use efficiency, photosystem II quantum efficiency (Fv/Fm), instantaneous carboxylation efficiency, chlorophyll index, and recuperation potential of H. speciosa seedlings after rehydration. Twelve month-old seedlings were used and maintained at 70% of their soil water retention capacity. Data was collected 7, 10, 12, 14, 16, 18, 20, 23, 31, 33, 35, 37, 42, 44, 46, and 48 days after suspending irrigation; irrigation was reinitiated when the photosynthetic rate approached zero. Water deficit conditions reduced all of the parameters evaluated except the chlorophyll index; stressed seedlings required 42 days for the photosynthetic rate to reach zero, but photosynthetic equilibrium was reestablished just five days after rehydration. This temporary water deficiency did not cause any permanent deleterious effects on the photosynthetic apparatus of the seedlings.
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spelling Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration cerradostressnative fruit treemangabaConsidering the wide distribution of Hancornia speciosa Gomes in the Brazilian savanna, environment with irregular distribution of rainfall, it is believed that their seedlings can be cultivated for a few days under water restriction, information that can stimulate the use of this species in restoration or planting for sustainable exploration programs. The present study evaluated the gas exchange and photosynthetic activities of H. speciosa seedlings and examined their tolerance to water deficit and their metabolic recovery after rehydration. We evaluated the photosynthetic rate, internal carbon concentration, transpiration rate, stomatal conductance, water-use efficiency, photosystem II quantum efficiency (Fv/Fm), instantaneous carboxylation efficiency, chlorophyll index, and recuperation potential of H. speciosa seedlings after rehydration. Twelve month-old seedlings were used and maintained at 70% of their soil water retention capacity. Data was collected 7, 10, 12, 14, 16, 18, 20, 23, 31, 33, 35, 37, 42, 44, 46, and 48 days after suspending irrigation; irrigation was reinitiated when the photosynthetic rate approached zero. Water deficit conditions reduced all of the parameters evaluated except the chlorophyll index; stressed seedlings required 42 days for the photosynthetic rate to reach zero, but photosynthetic equilibrium was reestablished just five days after rehydration. This temporary water deficiency did not cause any permanent deleterious effects on the photosynthetic apparatus of the seedlings. EDUFU2015-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/2608810.14393/BJ-v31n4a2015-26088Bioscience Journal ; Vol. 31 No. 4 (2015): July/Aug.; 1124-1132Bioscience Journal ; v. 31 n. 4 (2015): July/Aug.; 1124-11321981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/26088/16732Brazil; ContemporaryCopyright (c) 2015 Silvana de Paula Quintão Scalon, Fávia Mitsuko Kodama, Daiane Mugnol Dresch, Rosilda Mara Mussury, Zefa Valdivina Pereirahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessScalon, Silvana de Paula QuintãoKodama, Fávia MitsukoDresch, Daiane MugnolMussury, Rosilda MaraPereira, Zefa Valdivina2022-05-20T02:13:45Zoai:ojs.www.seer.ufu.br:article/26088Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-05-20T02:13:45Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
title Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
spellingShingle Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
Scalon, Silvana de Paula Quintão
cerrado
stress
native fruit tree
mangaba
title_short Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
title_full Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
title_fullStr Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
title_full_unstemmed Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
title_sort Gas exchange and photosynthetic activity in Hancornia speciosa gomes seedlings under water deficit conditions and during rehydration
author Scalon, Silvana de Paula Quintão
author_facet Scalon, Silvana de Paula Quintão
Kodama, Fávia Mitsuko
Dresch, Daiane Mugnol
Mussury, Rosilda Mara
Pereira, Zefa Valdivina
author_role author
author2 Kodama, Fávia Mitsuko
Dresch, Daiane Mugnol
Mussury, Rosilda Mara
Pereira, Zefa Valdivina
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Scalon, Silvana de Paula Quintão
Kodama, Fávia Mitsuko
Dresch, Daiane Mugnol
Mussury, Rosilda Mara
Pereira, Zefa Valdivina
dc.subject.por.fl_str_mv cerrado
stress
native fruit tree
mangaba
topic cerrado
stress
native fruit tree
mangaba
description Considering the wide distribution of Hancornia speciosa Gomes in the Brazilian savanna, environment with irregular distribution of rainfall, it is believed that their seedlings can be cultivated for a few days under water restriction, information that can stimulate the use of this species in restoration or planting for sustainable exploration programs. The present study evaluated the gas exchange and photosynthetic activities of H. speciosa seedlings and examined their tolerance to water deficit and their metabolic recovery after rehydration. We evaluated the photosynthetic rate, internal carbon concentration, transpiration rate, stomatal conductance, water-use efficiency, photosystem II quantum efficiency (Fv/Fm), instantaneous carboxylation efficiency, chlorophyll index, and recuperation potential of H. speciosa seedlings after rehydration. Twelve month-old seedlings were used and maintained at 70% of their soil water retention capacity. Data was collected 7, 10, 12, 14, 16, 18, 20, 23, 31, 33, 35, 37, 42, 44, 46, and 48 days after suspending irrigation; irrigation was reinitiated when the photosynthetic rate approached zero. Water deficit conditions reduced all of the parameters evaluated except the chlorophyll index; stressed seedlings required 42 days for the photosynthetic rate to reach zero, but photosynthetic equilibrium was reestablished just five days after rehydration. This temporary water deficiency did not cause any permanent deleterious effects on the photosynthetic apparatus of the seedlings.
publishDate 2015
dc.date.none.fl_str_mv 2015-06-30
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.ufu.br/index.php/biosciencejournal/article/view/26088
10.14393/BJ-v31n4a2015-26088
url https://seer.ufu.br/index.php/biosciencejournal/article/view/26088
identifier_str_mv 10.14393/BJ-v31n4a2015-26088
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/26088/16732
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 31 No. 4 (2015): July/Aug.; 1124-1132
Bioscience Journal ; v. 31 n. 4 (2015): July/Aug.; 1124-1132
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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