PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Genetics and Molecular Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200022 |
Resumo: | The Bacillus subtilis strain NCD-2 is an important biocontrol agent against cotton verticillium wilt and cotton sore shin in the field, which are caused by Verticillium dahliae Kleb and Rhizoctonia solani Kuhn, respectively. A mutant of strain NCD-2, designated M216, with decreased antagonism to V. dahliae and R. solani, was selected by mini-Tn10 mutagenesis and in vitro virulence screening. The inserted gene in the mutant was cloned and identified as the phoR gene, which encodes a sensor kinase in the PhoP/PhoR two-component system. Compared to the wild-type strain, the APase activities of the mutant was decreased significantly when cultured in low phosphate medium, but no obvious difference was observed when cultured in high phosphate medium. The mutant also grew more slowly on organic phosphate agar and lost its phosphatidylcholine-solubilizing ability. The suppression of cotton seedling damping-off in vivo and colonization of the rhizosphere of cotton also decreased in the mutant strain when compared with the wild type strain. All of these characteristics could be partially restored by complementation of the phoR gene in the M216 mutant. |
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PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2Bacillus subtilisantagonismVerticillium dahliaemini-Tn10The Bacillus subtilis strain NCD-2 is an important biocontrol agent against cotton verticillium wilt and cotton sore shin in the field, which are caused by Verticillium dahliae Kleb and Rhizoctonia solani Kuhn, respectively. A mutant of strain NCD-2, designated M216, with decreased antagonism to V. dahliae and R. solani, was selected by mini-Tn10 mutagenesis and in vitro virulence screening. The inserted gene in the mutant was cloned and identified as the phoR gene, which encodes a sensor kinase in the PhoP/PhoR two-component system. Compared to the wild-type strain, the APase activities of the mutant was decreased significantly when cultured in low phosphate medium, but no obvious difference was observed when cultured in high phosphate medium. The mutant also grew more slowly on organic phosphate agar and lost its phosphatidylcholine-solubilizing ability. The suppression of cotton seedling damping-off in vivo and colonization of the rhizosphere of cotton also decreased in the mutant strain when compared with the wild type strain. All of these characteristics could be partially restored by complementation of the phoR gene in the M216 mutant.Sociedade Brasileira de Genética2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200022Genetics and Molecular Biology v.33 n.2 2010reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572010005000032info:eu-repo/semantics/openAccessGuo,QinggangLi,ShezengLu,XiuyunLi,BaoqingMa,Pingeng2010-06-14T00:00:00Zoai:scielo:S1415-47572010000200022Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2010-06-14T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
title |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
spellingShingle |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 Guo,Qinggang Bacillus subtilis antagonism Verticillium dahliae mini-Tn10 |
title_short |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
title_full |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
title_fullStr |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
title_full_unstemmed |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
title_sort |
PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2 |
author |
Guo,Qinggang |
author_facet |
Guo,Qinggang Li,Shezeng Lu,Xiuyun Li,Baoqing Ma,Ping |
author_role |
author |
author2 |
Li,Shezeng Lu,Xiuyun Li,Baoqing Ma,Ping |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Guo,Qinggang Li,Shezeng Lu,Xiuyun Li,Baoqing Ma,Ping |
dc.subject.por.fl_str_mv |
Bacillus subtilis antagonism Verticillium dahliae mini-Tn10 |
topic |
Bacillus subtilis antagonism Verticillium dahliae mini-Tn10 |
description |
The Bacillus subtilis strain NCD-2 is an important biocontrol agent against cotton verticillium wilt and cotton sore shin in the field, which are caused by Verticillium dahliae Kleb and Rhizoctonia solani Kuhn, respectively. A mutant of strain NCD-2, designated M216, with decreased antagonism to V. dahliae and R. solani, was selected by mini-Tn10 mutagenesis and in vitro virulence screening. The inserted gene in the mutant was cloned and identified as the phoR gene, which encodes a sensor kinase in the PhoP/PhoR two-component system. Compared to the wild-type strain, the APase activities of the mutant was decreased significantly when cultured in low phosphate medium, but no obvious difference was observed when cultured in high phosphate medium. The mutant also grew more slowly on organic phosphate agar and lost its phosphatidylcholine-solubilizing ability. The suppression of cotton seedling damping-off in vivo and colonization of the rhizosphere of cotton also decreased in the mutant strain when compared with the wild type strain. All of these characteristics could be partially restored by complementation of the phoR gene in the M216 mutant. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
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=S1415-47572010000200022 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200022 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47572010005000032 |
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 |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
dc.source.none.fl_str_mv |
Genetics and Molecular Biology v.33 n.2 2010 reponame:Genetics and Molecular Biology instname:Sociedade Brasileira de Genética (SBG) instacron:SBG |
instname_str |
Sociedade Brasileira de Genética (SBG) |
instacron_str |
SBG |
institution |
SBG |
reponame_str |
Genetics and Molecular Biology |
collection |
Genetics and Molecular Biology |
repository.name.fl_str_mv |
Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG) |
repository.mail.fl_str_mv |
||editor@gmb.org.br |
_version_ |
1752122383245770752 |