Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane

Detalhes bibliográficos
Autor(a) principal: Carlin, Samira Domingues
Data de Publicação: 2012
Outros Autores: Rhein, Andressa Freitas de Lima, Santos, Durvalina Maria Mathias dos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/6463
Resumo: Sugarcane is a very important economic crop in Brazil. The effects of abiotic stresses cause negative reduction of the productivity in the sugarcane industry. In order to identify indicators of stresses tolerance, two physiological variables were evaluated, nitrate reductase activity and chlorophyll contents in young plants of sugarcane, cv. IAC91-5155. The simultaneous effect of abiotic stresses of high occurrence in Brazilian soils are, water deficiency and aluminum toxicity. The plants were submitted to three treatments of water availability (% field capacity, FC): no stress (70% FC), moderate stress (55% FC), and extreme stress (40% FC); and three acidity treatments in the soil (base saturation, V%): no acidity (V=55%), average acidity (V=33%), and high acidity (V=23%). The experiment was carried out in greenhouse, with 29.7±4.3ºC and 75±10% RH. The experimental design was in randomized blocks, in 3×3 factorial arrangement, with four replicates. After 60 days, nitrate reductase activity and chlorophyll contents were evaluated in the diagnostic leaf. The results demonstrate that the response of plants to a combination of drought and aluminum toxicity, similar to the conditions in many natural environments, is different from the response of plants to each of these stresses applied individually, as typically tested in the laboratory. The nitrate reductase activity can be used as a biochemical-physiological marker of water deficiency while chlorophyll contents can be used as a biochemical-physiological marker of both of them, water deficiency or aluminum toxicity in soil. Both parameters can not be as a biochemical-physiological marker for acclimation of young plants of sugarcane cv. IAC91-5155, under the combined stresses.
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spelling Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcaneEfeito simultâneo da deficiência hídrica e do alumínio tóxico no solo na cultivar IAC91-5155 de cana-de-açúcarSaccharum spp.Nitrate reductaseChlorophyllsWater deficitAcidity.Saccharum spp.Redutase do nitratoClorofilasDéficit hídricoAcidez.Sugarcane is a very important economic crop in Brazil. The effects of abiotic stresses cause negative reduction of the productivity in the sugarcane industry. In order to identify indicators of stresses tolerance, two physiological variables were evaluated, nitrate reductase activity and chlorophyll contents in young plants of sugarcane, cv. IAC91-5155. The simultaneous effect of abiotic stresses of high occurrence in Brazilian soils are, water deficiency and aluminum toxicity. The plants were submitted to three treatments of water availability (% field capacity, FC): no stress (70% FC), moderate stress (55% FC), and extreme stress (40% FC); and three acidity treatments in the soil (base saturation, V%): no acidity (V=55%), average acidity (V=33%), and high acidity (V=23%). The experiment was carried out in greenhouse, with 29.7±4.3ºC and 75±10% RH. The experimental design was in randomized blocks, in 3×3 factorial arrangement, with four replicates. After 60 days, nitrate reductase activity and chlorophyll contents were evaluated in the diagnostic leaf. The results demonstrate that the response of plants to a combination of drought and aluminum toxicity, similar to the conditions in many natural environments, is different from the response of plants to each of these stresses applied individually, as typically tested in the laboratory. The nitrate reductase activity can be used as a biochemical-physiological marker of water deficiency while chlorophyll contents can be used as a biochemical-physiological marker of both of them, water deficiency or aluminum toxicity in soil. Both parameters can not be as a biochemical-physiological marker for acclimation of young plants of sugarcane cv. IAC91-5155, under the combined stresses.Na cana-de-açúcar, cultura de grande importância econômica no Brasil, os efeitos dos estresses abióticos causam acentuada redução da produtividade inferindo negativamente na agroindústria canavieira. Em busca de encontrar parâmetros que atuem como indicadores fisiológicos da aclimatação das plantas aos efeitos da combinação de estresses, o presente trabalho avaliou a atividade da redutase do nitrato e os teores de clorofilas em plantas jovens de cana-de-açúcar, cv. IAC91-5155, sob efeito simultâneo de dois estresses abióticos de grande ocorrência nos solos brasileiros: deficiência hídrica e alumínio tóxico. Para tanto, as plantas foram submetidas a três tratamentos de disponibilidade hídrica (% de capacidade de campo, CC): sem estresse (70% CC), estresse moderado (55% CC) e estresse severo (40% CC) e três tratamentos de acidez no solo (saturação por bases, V%): baixa acidez (V=55%), média acidez (V=33%) e alta acidez (V=23%). O experimento foi realizado em casa de vegetação 29,7±4,3oC e 75±10 UR%. O delineamento experimental utilizado foi o de blocos ao acaso, em esquema fatorial 3×3, com quatro repetições. Após 60 dias sob ambos os estresses, foi verificada a atividade da enzima redutase do nitrato e os teores de clorofilas na folha diagnóstico. Os resultados mostram que, a atividade da enzima redutase do nitrato é indicadora apenas do efeito do estresse hídrico. Os teores de clorofilas são indicadores dos efeitos dos estresses isolados, deficiência hídrica ou toxidez do alumínio no solo. Ambos os parâmetros avaliados não podem ser adotados como indicadores fisiológicos do mecanismo de aclimatação de plantas jovens de cana-de-açúcar, cv. IAC91-5155, sob efeito combinado da deficiência hídrica e alumínio tóxico no solo.UEL2012-05-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/646310.5433/1679-0359.2012v33n2p553Semina: Ciências Agrárias; Vol. 33 No. 2 (2012); 553-564Semina: Ciências Agrárias; v. 33 n. 2 (2012); 553-5641679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/6463/10472Carlin, Samira DominguesRhein, Andressa Freitas de LimaSantos, Durvalina Maria Mathias dosinfo:eu-repo/semantics/openAccess2015-11-19T18:37:36Zoai:ojs.pkp.sfu.ca:article/6463Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:37:36Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
Efeito simultâneo da deficiência hídrica e do alumínio tóxico no solo na cultivar IAC91-5155 de cana-de-açúcar
title Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
spellingShingle Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
Carlin, Samira Domingues
Saccharum spp.
Nitrate reductase
Chlorophylls
Water deficit
Acidity.
Saccharum spp.
Redutase do nitrato
Clorofilas
Déficit hídrico
Acidez.
title_short Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
title_full Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
title_fullStr Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
title_full_unstemmed Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
title_sort Simultaneous effect of water deficiency and aluminum toxicity in the soil in cultivar IAC91-5155 of sugarcane
author Carlin, Samira Domingues
author_facet Carlin, Samira Domingues
Rhein, Andressa Freitas de Lima
Santos, Durvalina Maria Mathias dos
author_role author
author2 Rhein, Andressa Freitas de Lima
Santos, Durvalina Maria Mathias dos
author2_role author
author
dc.contributor.author.fl_str_mv Carlin, Samira Domingues
Rhein, Andressa Freitas de Lima
Santos, Durvalina Maria Mathias dos
dc.subject.por.fl_str_mv Saccharum spp.
Nitrate reductase
Chlorophylls
Water deficit
Acidity.
Saccharum spp.
Redutase do nitrato
Clorofilas
Déficit hídrico
Acidez.
topic Saccharum spp.
Nitrate reductase
Chlorophylls
Water deficit
Acidity.
Saccharum spp.
Redutase do nitrato
Clorofilas
Déficit hídrico
Acidez.
description Sugarcane is a very important economic crop in Brazil. The effects of abiotic stresses cause negative reduction of the productivity in the sugarcane industry. In order to identify indicators of stresses tolerance, two physiological variables were evaluated, nitrate reductase activity and chlorophyll contents in young plants of sugarcane, cv. IAC91-5155. The simultaneous effect of abiotic stresses of high occurrence in Brazilian soils are, water deficiency and aluminum toxicity. The plants were submitted to three treatments of water availability (% field capacity, FC): no stress (70% FC), moderate stress (55% FC), and extreme stress (40% FC); and three acidity treatments in the soil (base saturation, V%): no acidity (V=55%), average acidity (V=33%), and high acidity (V=23%). The experiment was carried out in greenhouse, with 29.7±4.3ºC and 75±10% RH. The experimental design was in randomized blocks, in 3×3 factorial arrangement, with four replicates. After 60 days, nitrate reductase activity and chlorophyll contents were evaluated in the diagnostic leaf. The results demonstrate that the response of plants to a combination of drought and aluminum toxicity, similar to the conditions in many natural environments, is different from the response of plants to each of these stresses applied individually, as typically tested in the laboratory. The nitrate reductase activity can be used as a biochemical-physiological marker of water deficiency while chlorophyll contents can be used as a biochemical-physiological marker of both of them, water deficiency or aluminum toxicity in soil. Both parameters can not be as a biochemical-physiological marker for acclimation of young plants of sugarcane cv. IAC91-5155, under the combined stresses.
publishDate 2012
dc.date.none.fl_str_mv 2012-05-15
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dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/6463
10.5433/1679-0359.2012v33n2p553
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/6463
identifier_str_mv 10.5433/1679-0359.2012v33n2p553
dc.language.iso.fl_str_mv por
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dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/6463/10472
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dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 33 No. 2 (2012); 553-564
Semina: Ciências Agrárias; v. 33 n. 2 (2012); 553-564
1679-0359
1676-546X
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reponame_str Semina. Ciências Agrárias (Online)
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