Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.

Detalhes bibliográficos
Autor(a) principal: MAGALHAES, P. C.
Data de Publicação: 2016
Outros Autores: SOUZA, T. C. de, LAVINSKY, A. O., ALBUQUERQUE, P. E. P. de, OLIVEIRA, L. L. de, CASTRO, E. M. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057625
Resumo: In order to understand possible relationships among the features of plant organs located above and below soil, their correlation and how it might affect strategies for drought adaptation, two sorghum lines contrasting in drought tolerance (BR007-sensitive and 99100-tolerant) were cultivated under different soil water levels during pre-flowering stage. Half of the plants of each genotype remained under daily irrigation to maintain the soil moisture close to FC, and the other half was subjected to WD. After 10 days in these conditions, physiological and anatomical characteristics of the lines were evaluated and then water supply was restored and maintained at optimum levels by the end of the cycle. At physiological maturity, the root morphology and agronomic parameters associated to productivity were analyzed. Regardless the variation in the soil moisture, plants of the line 99100 presented values significantly superior for HI, RDB and LA compared to plants of the BR007 line, whereas the A values were lower. Only line 99100 plants increased VFRL compared to its counterparts under FC. The lack of change in root morphology in line BR007 plants was accompanied by increase in CAT activity and lower DBV in leaves. The increase in CAT activity was not sufficient to reduce the pool of H2O2 in leave cells of BR007 under WD, leading to a decrease in FvFm. Thus, the H2O2 accumulated in the leaf was deviated to the lignin biosynthesis, corroborating the lower DVB in leaves of BR007 line under WD, compared to line 99100 under WD. In addition, BR007 plants showed smaller DBC under WD, which simultaneously led to an increase in NBC. Such structural and functional adjustment at the leaf level would compensate the absence of changes in the root architecture in response to the stress generated by the WD.
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spelling Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.EnzimaResistência a secaSistema radicularRaizIn order to understand possible relationships among the features of plant organs located above and below soil, their correlation and how it might affect strategies for drought adaptation, two sorghum lines contrasting in drought tolerance (BR007-sensitive and 99100-tolerant) were cultivated under different soil water levels during pre-flowering stage. Half of the plants of each genotype remained under daily irrigation to maintain the soil moisture close to FC, and the other half was subjected to WD. After 10 days in these conditions, physiological and anatomical characteristics of the lines were evaluated and then water supply was restored and maintained at optimum levels by the end of the cycle. At physiological maturity, the root morphology and agronomic parameters associated to productivity were analyzed. Regardless the variation in the soil moisture, plants of the line 99100 presented values significantly superior for HI, RDB and LA compared to plants of the BR007 line, whereas the A values were lower. Only line 99100 plants increased VFRL compared to its counterparts under FC. The lack of change in root morphology in line BR007 plants was accompanied by increase in CAT activity and lower DBV in leaves. The increase in CAT activity was not sufficient to reduce the pool of H2O2 in leave cells of BR007 under WD, leading to a decrease in FvFm. Thus, the H2O2 accumulated in the leaf was deviated to the lignin biosynthesis, corroborating the lower DVB in leaves of BR007 line under WD, compared to line 99100 under WD. In addition, BR007 plants showed smaller DBC under WD, which simultaneously led to an increase in NBC. Such structural and functional adjustment at the leaf level would compensate the absence of changes in the root architecture in response to the stress generated by the WD.PAULO CESAR MAGALHAES, CNPMS; Thiago Corrêa de Souza, Universidade Federal de Alfenas; Alyne Oliveira Lavinsky, Bolsista; PAULO EMILIO PEREIRA DE ALBUQUERQUE, CNPMS; Leandro Lino de Oliveira, Universidade Federal de Lavras; Evaristo Mauro de Castro, Universidade Federal de Lavras.MAGALHAES, P. C.SOUZA, T. C. deLAVINSKY, A. O.ALBUQUERQUE, P. E. P. deOLIVEIRA, L. L. deCASTRO, E. M. de2017-06-06T23:54:28Z2017-06-06T23:54:28Z2016-12-0120162017-06-06T23:54:28Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAustralian Journal of Crop Science, v. 10, n. 1, p. 81-87, 2016.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057625enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T04:31:01Zoai:www.alice.cnptia.embrapa.br:doc/1057625Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T04:31:01falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T04:31:01Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
title Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
spellingShingle Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
MAGALHAES, P. C.
Enzima
Resistência a seca
Sistema radicular
Raiz
title_short Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
title_full Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
title_fullStr Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
title_full_unstemmed Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
title_sort Phenotypic plasticity of root system and shoots of Sorghum bicolor under different soil water levels during pre-flowering stage.
author MAGALHAES, P. C.
author_facet MAGALHAES, P. C.
SOUZA, T. C. de
LAVINSKY, A. O.
ALBUQUERQUE, P. E. P. de
OLIVEIRA, L. L. de
CASTRO, E. M. de
author_role author
author2 SOUZA, T. C. de
LAVINSKY, A. O.
ALBUQUERQUE, P. E. P. de
OLIVEIRA, L. L. de
CASTRO, E. M. de
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv PAULO CESAR MAGALHAES, CNPMS; Thiago Corrêa de Souza, Universidade Federal de Alfenas; Alyne Oliveira Lavinsky, Bolsista; PAULO EMILIO PEREIRA DE ALBUQUERQUE, CNPMS; Leandro Lino de Oliveira, Universidade Federal de Lavras; Evaristo Mauro de Castro, Universidade Federal de Lavras.
dc.contributor.author.fl_str_mv MAGALHAES, P. C.
SOUZA, T. C. de
LAVINSKY, A. O.
ALBUQUERQUE, P. E. P. de
OLIVEIRA, L. L. de
CASTRO, E. M. de
dc.subject.por.fl_str_mv Enzima
Resistência a seca
Sistema radicular
Raiz
topic Enzima
Resistência a seca
Sistema radicular
Raiz
description In order to understand possible relationships among the features of plant organs located above and below soil, their correlation and how it might affect strategies for drought adaptation, two sorghum lines contrasting in drought tolerance (BR007-sensitive and 99100-tolerant) were cultivated under different soil water levels during pre-flowering stage. Half of the plants of each genotype remained under daily irrigation to maintain the soil moisture close to FC, and the other half was subjected to WD. After 10 days in these conditions, physiological and anatomical characteristics of the lines were evaluated and then water supply was restored and maintained at optimum levels by the end of the cycle. At physiological maturity, the root morphology and agronomic parameters associated to productivity were analyzed. Regardless the variation in the soil moisture, plants of the line 99100 presented values significantly superior for HI, RDB and LA compared to plants of the BR007 line, whereas the A values were lower. Only line 99100 plants increased VFRL compared to its counterparts under FC. The lack of change in root morphology in line BR007 plants was accompanied by increase in CAT activity and lower DBV in leaves. The increase in CAT activity was not sufficient to reduce the pool of H2O2 in leave cells of BR007 under WD, leading to a decrease in FvFm. Thus, the H2O2 accumulated in the leaf was deviated to the lignin biosynthesis, corroborating the lower DVB in leaves of BR007 line under WD, compared to line 99100 under WD. In addition, BR007 plants showed smaller DBC under WD, which simultaneously led to an increase in NBC. Such structural and functional adjustment at the leaf level would compensate the absence of changes in the root architecture in response to the stress generated by the WD.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-01
2016
2017-06-06T23:54:28Z
2017-06-06T23:54:28Z
2017-06-06T23:54:28Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Australian Journal of Crop Science, v. 10, n. 1, p. 81-87, 2016.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057625
identifier_str_mv Australian Journal of Crop Science, v. 10, n. 1, p. 81-87, 2016.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057625
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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