Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/22343 |
Resumo: | Plant hormones are likely key regulators of arbuscular mycorrhizae (AM) development. However, their roles in AM are not well known. Here mutants in five hormone classes introgressed in a single tomato (Lycopersicon esculentum Mill. Syn Solanum lycopersicum L.) background (cv. Micro-Tom) were used to determine their effects on AM development and the expression of defense-related genes (chitinases and b-1,3-glucanases) in roots. Under low P conditions, mutant epinastic (epi) and Never ripe (Nr), ethylene overproducer and low sensitivity, respectively, had the intraradical colonization by Glomus clarum highly inhibited, as compared to the control Micro-Tom (MT). No significant alterations in fungal colonization were observed in mutants affecting other hormone classes. Under low P conditions, the steady state levels of transcripts encoding a class I basic chitinase (chi9) were higher in mycorrhizal epi and Nr mutant roots as compared to MT controls. In contrast the steady state levels of a class III acidic b-1,3-glucanase (TomPR-Q'a) transcripts in mycorrhizal epi mutant roots were significantly lower than in mycorrhizal MT roots. Root colonization in epi mutants was accompanied by several alterations in fungal morphology, as compared to root colonization in MT controls. The data suggest that ethylene may play an important role in controlling intraradical arbuscular mycorrhizal fungal growth. |
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Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants LycopersiconMicro-Tomgenes relacionados à defesafosfatohormôniosLycopersiconMicro-Tomdefense-related geneshormonesphosphate Plant hormones are likely key regulators of arbuscular mycorrhizae (AM) development. However, their roles in AM are not well known. Here mutants in five hormone classes introgressed in a single tomato (Lycopersicon esculentum Mill. Syn Solanum lycopersicum L.) background (cv. Micro-Tom) were used to determine their effects on AM development and the expression of defense-related genes (chitinases and b-1,3-glucanases) in roots. Under low P conditions, mutant epinastic (epi) and Never ripe (Nr), ethylene overproducer and low sensitivity, respectively, had the intraradical colonization by Glomus clarum highly inhibited, as compared to the control Micro-Tom (MT). No significant alterations in fungal colonization were observed in mutants affecting other hormone classes. Under low P conditions, the steady state levels of transcripts encoding a class I basic chitinase (chi9) were higher in mycorrhizal epi and Nr mutant roots as compared to MT controls. In contrast the steady state levels of a class III acidic b-1,3-glucanase (TomPR-Q'a) transcripts in mycorrhizal epi mutant roots were significantly lower than in mycorrhizal MT roots. Root colonization in epi mutants was accompanied by several alterations in fungal morphology, as compared to root colonization in MT controls. The data suggest that ethylene may play an important role in controlling intraradical arbuscular mycorrhizal fungal growth. Os hormônios vegetais são possíveis reguladores chave do desenvolvimento de micorrizas arbusculares (MAS). Contudo, seus papéis em MA são pouco conhecidos. No presente estudo, foram utilizados mutantes em cinco classes hormonais introgredidos em uma única cultivar (cv. Micro-Tom) de tomateiro (Lycopersicon esculentum Mill. Syn Solanum lycopersicum L.) para determinar seus efeitos no desenvolvimento de MA e expressão de genes relacionados à defesa (quitinases e b-1,3-glucanases) em raízes. Sob condição de baixo P, os mutantes epinastic (epi) e Never ripe (Nr), os quais são super produtores e pouco sensíveis a etileno, respectivamente, tiveram a colonização intra-radicular por Glomus clarum inibida quando comparada com o controle Micro-Tom (MT). Não se observou alterações significativas na colonização fúngica nos mutantes afetando outras classes hormonais. Sob condição de baixo P, o nível de transcritos codificando uma quitinase básica de classe I (chi9) foi mais elevado em raízes micorrizadas dos mutantes epi e Nr, quando comparado com o controle MT. Em contraste, o nível de transcritos de uma b-1,3-glucanase ácida da classe III (TomPR-Q'a) em raízes micorrizadas do mutante epi foi significativamente menor que em raízes micorrizadas de MT. A colonização de raízes no mutante epi foi acompanhada por várias alterações na morfologia fúngica, quando comparada com o controle MT. Os resultados sugerem que o etileno pode desempenhar um importante papel controlando o crescimento fúngico intra-radicular nas MAS. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/2234310.1590/S0103-90162008000300006Scientia Agricola; v. 65 n. 3 (2008); 259-267Scientia Agricola; Vol. 65 No. 3 (2008); 259-267Scientia Agricola; Vol. 65 Núm. 3 (2008); 259-2671678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/22343/24367Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessZsögön, AgustinLambais, Marcio RodriguesBenedito, Vagner AugustoFigueira, Antonio Vargas de OliveiraPeres, Lázaro Eustáquio Pereira2015-07-07T17:35:47Zoai:revistas.usp.br:article/22343Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T17:35:47Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
title |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno |
spellingShingle |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno Zsögön, Agustin Lycopersicon Micro-Tom genes relacionados à defesa fosfato hormônios Lycopersicon Micro-Tom defense-related genes hormones phosphate |
title_short |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno |
title_full |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno |
title_fullStr |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno |
title_full_unstemmed |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno |
title_sort |
Reduzida formação de micorrízas arbusculares em tomateiros mutantes em etileno |
author |
Zsögön, Agustin |
author_facet |
Zsögön, Agustin Lambais, Marcio Rodrigues Benedito, Vagner Augusto Figueira, Antonio Vargas de Oliveira Peres, Lázaro Eustáquio Pereira |
author_role |
author |
author2 |
Lambais, Marcio Rodrigues Benedito, Vagner Augusto Figueira, Antonio Vargas de Oliveira Peres, Lázaro Eustáquio Pereira |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Zsögön, Agustin Lambais, Marcio Rodrigues Benedito, Vagner Augusto Figueira, Antonio Vargas de Oliveira Peres, Lázaro Eustáquio Pereira |
dc.subject.por.fl_str_mv |
Lycopersicon Micro-Tom genes relacionados à defesa fosfato hormônios Lycopersicon Micro-Tom defense-related genes hormones phosphate |
topic |
Lycopersicon Micro-Tom genes relacionados à defesa fosfato hormônios Lycopersicon Micro-Tom defense-related genes hormones phosphate |
description |
Plant hormones are likely key regulators of arbuscular mycorrhizae (AM) development. However, their roles in AM are not well known. Here mutants in five hormone classes introgressed in a single tomato (Lycopersicon esculentum Mill. Syn Solanum lycopersicum L.) background (cv. Micro-Tom) were used to determine their effects on AM development and the expression of defense-related genes (chitinases and b-1,3-glucanases) in roots. Under low P conditions, mutant epinastic (epi) and Never ripe (Nr), ethylene overproducer and low sensitivity, respectively, had the intraradical colonization by Glomus clarum highly inhibited, as compared to the control Micro-Tom (MT). No significant alterations in fungal colonization were observed in mutants affecting other hormone classes. Under low P conditions, the steady state levels of transcripts encoding a class I basic chitinase (chi9) were higher in mycorrhizal epi and Nr mutant roots as compared to MT controls. In contrast the steady state levels of a class III acidic b-1,3-glucanase (TomPR-Q'a) transcripts in mycorrhizal epi mutant roots were significantly lower than in mycorrhizal MT roots. Root colonization in epi mutants was accompanied by several alterations in fungal morphology, as compared to root colonization in MT controls. The data suggest that ethylene may play an important role in controlling intraradical arbuscular mycorrhizal fungal growth. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 |
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://www.revistas.usp.br/sa/article/view/22343 10.1590/S0103-90162008000300006 |
url |
https://www.revistas.usp.br/sa/article/view/22343 |
identifier_str_mv |
10.1590/S0103-90162008000300006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/22343/24367 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 65 n. 3 (2008); 259-267 Scientia Agricola; Vol. 65 No. 3 (2008); 259-267 Scientia Agricola; Vol. 65 Núm. 3 (2008); 259-267 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1787713256838660096 |