Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings

Detalhes bibliográficos
Autor(a) principal: Bartieres,E. M. M.
Data de Publicação: 2023
Outros Autores: Dresch,D. M., Reis,L. C., Pereira,Z. V., Mussury,R. M., Scalon,S. P. Q.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100111
Resumo: Abstract The objective of this study was to evaluate the activity of antioxidant enzymes, the functioning of the photosystem II and quality of C. xanthocarpa seedlings cultivated under intermittent water deficit and shading levels and the influence of shading on recovery potential after suspension of the stress conditions. The seedlings were subjected to three levels of shading (0, 30, and 70%), six periods of evaluation (start: 0 days; 1st and 2nd photosynthesis zero: 1st and 2nd P0; 1st and 2nd recovery: 1stand 2nd REC; and END), and two forms of irrigation (control: periodically irrigated to maintain 70% substrate water retention capacity, and intermittent irrigation: suspension of irrigation). The plants subjected to intermittent irrigation conditions at 0% shading showed a reduction in water potential (Ψw) and potential quantum efficiency of photosystem II (Fv/Fm) and maximum efficiency of the photochemical process (Fv/F0) and an increase in basal quantum production of the non-photochemical processes (F0/Fm). Superoxide dismutase (SOD) activity was higher in the leaves than in the roots. The C. xanthocarpa is a species sensitive to water deficit but presents strategies to adapt to an environment under temporary water restriction, which are more temporary are most efficient under shading. The seedlings with water deficit at all levels of shading exhibited higher protective antioxidant activity and lower quality at 0% shading. The shading minimizes prevents permanent damage to the photosystem II and after the re-irrigation, the evaluated characteristics showed recovery with respect to the control group, except POD and SOD activities in the leaves.
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spelling Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlingsenzymechlorophyll a fluorescencephotochemistryabiotic stressAbstract The objective of this study was to evaluate the activity of antioxidant enzymes, the functioning of the photosystem II and quality of C. xanthocarpa seedlings cultivated under intermittent water deficit and shading levels and the influence of shading on recovery potential after suspension of the stress conditions. The seedlings were subjected to three levels of shading (0, 30, and 70%), six periods of evaluation (start: 0 days; 1st and 2nd photosynthesis zero: 1st and 2nd P0; 1st and 2nd recovery: 1stand 2nd REC; and END), and two forms of irrigation (control: periodically irrigated to maintain 70% substrate water retention capacity, and intermittent irrigation: suspension of irrigation). The plants subjected to intermittent irrigation conditions at 0% shading showed a reduction in water potential (Ψw) and potential quantum efficiency of photosystem II (Fv/Fm) and maximum efficiency of the photochemical process (Fv/F0) and an increase in basal quantum production of the non-photochemical processes (F0/Fm). Superoxide dismutase (SOD) activity was higher in the leaves than in the roots. The C. xanthocarpa is a species sensitive to water deficit but presents strategies to adapt to an environment under temporary water restriction, which are more temporary are most efficient under shading. The seedlings with water deficit at all levels of shading exhibited higher protective antioxidant activity and lower quality at 0% shading. The shading minimizes prevents permanent damage to the photosystem II and after the re-irrigation, the evaluated characteristics showed recovery with respect to the control group, except POD and SOD activities in the leaves.Instituto Internacional de Ecologia2023-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100111Brazilian Journal of Biology v.83 2023reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/1519-6984.244718info:eu-repo/semantics/openAccessBartieres,E. M. M.Dresch,D. M.Reis,L. C.Pereira,Z. V.Mussury,R. M.Scalon,S. P. Q.eng2021-06-18T00:00:00Zoai:scielo:S1519-69842023000100111Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2021-06-18T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
title Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
spellingShingle Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
Bartieres,E. M. M.
enzyme
chlorophyll a fluorescence
photochemistry
abiotic stress
title_short Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
title_full Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
title_fullStr Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
title_full_unstemmed Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
title_sort Shading minimizes the effects of water deficit in Campomanesia xanthocarpa (Mart.) O. Berg seedlings
author Bartieres,E. M. M.
author_facet Bartieres,E. M. M.
Dresch,D. M.
Reis,L. C.
Pereira,Z. V.
Mussury,R. M.
Scalon,S. P. Q.
author_role author
author2 Dresch,D. M.
Reis,L. C.
Pereira,Z. V.
Mussury,R. M.
Scalon,S. P. Q.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Bartieres,E. M. M.
Dresch,D. M.
Reis,L. C.
Pereira,Z. V.
Mussury,R. M.
Scalon,S. P. Q.
dc.subject.por.fl_str_mv enzyme
chlorophyll a fluorescence
photochemistry
abiotic stress
topic enzyme
chlorophyll a fluorescence
photochemistry
abiotic stress
description Abstract The objective of this study was to evaluate the activity of antioxidant enzymes, the functioning of the photosystem II and quality of C. xanthocarpa seedlings cultivated under intermittent water deficit and shading levels and the influence of shading on recovery potential after suspension of the stress conditions. The seedlings were subjected to three levels of shading (0, 30, and 70%), six periods of evaluation (start: 0 days; 1st and 2nd photosynthesis zero: 1st and 2nd P0; 1st and 2nd recovery: 1stand 2nd REC; and END), and two forms of irrigation (control: periodically irrigated to maintain 70% substrate water retention capacity, and intermittent irrigation: suspension of irrigation). The plants subjected to intermittent irrigation conditions at 0% shading showed a reduction in water potential (Ψw) and potential quantum efficiency of photosystem II (Fv/Fm) and maximum efficiency of the photochemical process (Fv/F0) and an increase in basal quantum production of the non-photochemical processes (F0/Fm). Superoxide dismutase (SOD) activity was higher in the leaves than in the roots. The C. xanthocarpa is a species sensitive to water deficit but presents strategies to adapt to an environment under temporary water restriction, which are more temporary are most efficient under shading. The seedlings with water deficit at all levels of shading exhibited higher protective antioxidant activity and lower quality at 0% shading. The shading minimizes prevents permanent damage to the photosystem II and after the re-irrigation, the evaluated characteristics showed recovery with respect to the control group, except POD and SOD activities in the leaves.
publishDate 2023
dc.date.none.fl_str_mv 2023-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100111
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842023000100111
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1519-6984.244718
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Internacional de Ecologia
publisher.none.fl_str_mv Instituto Internacional de Ecologia
dc.source.none.fl_str_mv Brazilian Journal of Biology v.83 2023
reponame:Brazilian Journal of Biology
instname:Instituto Internacional de Ecologia (IIE)
instacron:IIE
instname_str Instituto Internacional de Ecologia (IIE)
instacron_str IIE
institution IIE
reponame_str Brazilian Journal of Biology
collection Brazilian Journal of Biology
repository.name.fl_str_mv Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)
repository.mail.fl_str_mv bjb@bjb.com.br||bjb@bjb.com.br
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