Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants
Main Author: | |
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Publication Date: | 2008 |
Other Authors: | , , , |
Format: | Article |
Language: | eng |
Source: | Scientia Agrícola (Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300006 |
Summary: | 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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Reduced arbuscular mycorrhizal colonization in tomato ethylene mutantsLycopersiconMicro-Tomdefense-related geneshormonesphosphatePlant 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.Escola Superior de Agricultura "Luiz de Queiroz"2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300006Scientia Agricola v.65 n.3 2008reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162008000300006info:eu-repo/semantics/openAccessZsögön,AgustinLambais,Marcio RodriguesBenedito,Vagner AugustoFigueira,Antonio Vargas de OliveiraPeres,Lázaro Eustáquio Pereiraeng2008-07-10T00:00:00Zoai:scielo:S0103-90162008000300006Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2008-07-10T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
title |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
spellingShingle |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants Zsögön,Agustin Lycopersicon Micro-Tom defense-related genes hormones phosphate |
title_short |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
title_full |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
title_fullStr |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
title_full_unstemmed |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
title_sort |
Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants |
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 defense-related genes hormones phosphate |
topic |
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 |
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=S0103-90162008000300006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162008000300006 |
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 |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.65 n.3 2008 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_ |
1748936460971540480 |