Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista ciência agronômica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300532 |
Resumo: | ABSTRACT Silicon (Si) has beneficial effects on many crops, mainly under biotic and abiotic stress. Silicon can affect biochemical, physiological, and photosynthetic processes and, consequently, reduce drought stress. However, the effects of Si on rice (Oryza sativa L.) plants under drought stress are not well known. The objective of this study was to evaluate the effects of supplemental Si on proline content and peroxidase activity in upland rice plants in the presence and absence of drought stress. The experiment was conducted under greenhouse conditions and was arranged in completely randomized blocks in a 2 x 2 x 2 factorial scheme. Treatments comprised combinations of (1) presence or absence of Si supply (0 or 350 kg ha-1 of Si), (2) presence or absence of a water deficit (-0.050 MPa or -0.025 MPa soil water potential values, respectively), and (3) two upland rice cultivars: Caiapo (traditional type) and Maravilha (modern type), with eight replications. Under water stress conditions, silicon fertilization reduced the proline content in the vegetative and reproductive phases of upland rice plants and increased peroxidase activity in the plants' reproductive phase, which could be indicative of stress tolerance. |
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Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivarsOryza sativaProlinePeroxidaseEnzymeHydric deficiencyABSTRACT Silicon (Si) has beneficial effects on many crops, mainly under biotic and abiotic stress. Silicon can affect biochemical, physiological, and photosynthetic processes and, consequently, reduce drought stress. However, the effects of Si on rice (Oryza sativa L.) plants under drought stress are not well known. The objective of this study was to evaluate the effects of supplemental Si on proline content and peroxidase activity in upland rice plants in the presence and absence of drought stress. The experiment was conducted under greenhouse conditions and was arranged in completely randomized blocks in a 2 x 2 x 2 factorial scheme. Treatments comprised combinations of (1) presence or absence of Si supply (0 or 350 kg ha-1 of Si), (2) presence or absence of a water deficit (-0.050 MPa or -0.025 MPa soil water potential values, respectively), and (3) two upland rice cultivars: Caiapo (traditional type) and Maravilha (modern type), with eight replications. Under water stress conditions, silicon fertilization reduced the proline content in the vegetative and reproductive phases of upland rice plants and increased peroxidase activity in the plants' reproductive phase, which could be indicative of stress tolerance.Universidade Federal do Ceará2016-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300532Revista Ciência Agronômica v.47 n.3 2016reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.5935/1806-6690.20160064info:eu-repo/semantics/openAccessMauad,MunirCrusciol,Carlos Alexandre CostaNascente,Adriano StephanGrassi Filho,HélioLima,Giuseppina Pace Pereiraeng2016-05-20T00:00:00Zoai:scielo:S1806-66902016000300532Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2016-05-20T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
title |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
spellingShingle |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars Mauad,Munir Oryza sativa Proline Peroxidase Enzyme Hydric deficiency |
title_short |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
title_full |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
title_fullStr |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
title_full_unstemmed |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
title_sort |
Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars |
author |
Mauad,Munir |
author_facet |
Mauad,Munir Crusciol,Carlos Alexandre Costa Nascente,Adriano Stephan Grassi Filho,Hélio Lima,Giuseppina Pace Pereira |
author_role |
author |
author2 |
Crusciol,Carlos Alexandre Costa Nascente,Adriano Stephan Grassi Filho,Hélio Lima,Giuseppina Pace Pereira |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Mauad,Munir Crusciol,Carlos Alexandre Costa Nascente,Adriano Stephan Grassi Filho,Hélio Lima,Giuseppina Pace Pereira |
dc.subject.por.fl_str_mv |
Oryza sativa Proline Peroxidase Enzyme Hydric deficiency |
topic |
Oryza sativa Proline Peroxidase Enzyme Hydric deficiency |
description |
ABSTRACT Silicon (Si) has beneficial effects on many crops, mainly under biotic and abiotic stress. Silicon can affect biochemical, physiological, and photosynthetic processes and, consequently, reduce drought stress. However, the effects of Si on rice (Oryza sativa L.) plants under drought stress are not well known. The objective of this study was to evaluate the effects of supplemental Si on proline content and peroxidase activity in upland rice plants in the presence and absence of drought stress. The experiment was conducted under greenhouse conditions and was arranged in completely randomized blocks in a 2 x 2 x 2 factorial scheme. Treatments comprised combinations of (1) presence or absence of Si supply (0 or 350 kg ha-1 of Si), (2) presence or absence of a water deficit (-0.050 MPa or -0.025 MPa soil water potential values, respectively), and (3) two upland rice cultivars: Caiapo (traditional type) and Maravilha (modern type), with eight replications. Under water stress conditions, silicon fertilization reduced the proline content in the vegetative and reproductive phases of upland rice plants and increased peroxidase activity in the plants' reproductive phase, which could be indicative of stress tolerance. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09-01 |
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=S1806-66902016000300532 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300532 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/1806-6690.20160064 |
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 |
Universidade Federal do Ceará |
publisher.none.fl_str_mv |
Universidade Federal do Ceará |
dc.source.none.fl_str_mv |
Revista Ciência Agronômica v.47 n.3 2016 reponame:Revista ciência agronômica (Online) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Revista ciência agronômica (Online) |
collection |
Revista ciência agronômica (Online) |
repository.name.fl_str_mv |
Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
||alekdutra@ufc.br|| ccarev@ufc.br |
_version_ |
1750297488461398016 |