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The Tat pathway exports multiple virulence proteins in the plant pathogen Streptomyces scabies

Identifieur interne : 002D13 ( Main/Exploration ); précédent : 002D12; suivant : 002D14

The Tat pathway exports multiple virulence proteins in the plant pathogen Streptomyces scabies

Auteurs : Madhumita V. Joshi [Royaume-Uni, États-Unis] ; Stefan G. Mann [Royaume-Uni] ; Haike Antelmann [Royaume-Uni] ; David Widdick [Royaume-Uni] ; Joanna K. Fyans [Royaume-Uni] ; Govind Chandra [Royaume-Uni] ; Matthew I. Hutchings [Royaume-Uni] ; Ian Toth [Royaume-Uni] ; Michael Hecker [Royaume-Uni] ; Rosemary Loria [Royaume-Uni, États-Unis] ; Tracy Palmer [Royaume-Uni]

Source :

RBID : Hal:hal-00552638

Descripteurs français

Abstract

Streptomyces scabies is one of a group of organisms that causes the economically important disease potato scab. Analysis of the S. scabies genome sequence indicates that it is likely to secrete many proteins via the twin arginine protein transport (Tat) pathway, including several proteins whose coding sequences may have been acquired through horizontal gene transfer and share a common ancestor with proteins in other plant pathogens. Inactivation of the S. scabies Tat pathway resulted in pleiotropic phenotypes including slower growth rate and increased permeability of the cell envelope. Comparison of the extracellular proteome of the wild type and ΔtatC strains identified 73 predicted secretory proteins that were present in reduced amounts in the tatC mutant strain, and 47 Tat substrates were verified using a Tat reporter assay. The ΔtatC strain was almost completely avirulent on Arabidopsis seedlings and was delayed in attaching to the root tip relative to the wild type strain. Genes encoding 14 candidate Tat substrates were individually inactivated, and seven of these mutants were reduced in virulence compared to the wild type strain. We conclude that the Tat pathway secretes multiple proteins that are required for full virulence.

Url:
DOI: 10.1111/j.1365-2958.2010.07206.x


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

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<tutelle active="#struct-366245" type="direct">
<org type="institution" xml:id="struct-366245" status="INCOMING">
<orgName>Cornell University</orgName>
<desc>
<address>
<country key="FR"></country>
</address>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>Royaume-Uni</country>
<placeName>
<settlement type="city">Ithaca (New York)</settlement>
<region type="state">État de New York</region>
</placeName>
<country>États-Unis</country>
<orgName type="university">Université Cornell</orgName>
</affiliation>
</author>
<author>
<name sortKey="Palmer, Tracy" sort="Palmer, Tracy" uniqKey="Palmer T" first="Tracy" last="Palmer">Tracy Palmer</name>
<affiliation wicri:level="1">
<hal:affiliation type="laboratory" xml:id="struct-138186" status="INCOMING">
<orgName>College of Life Sciences</orgName>
<desc>
<address>
<addrLine>DD1 5EH;Dundee</addrLine>
<country key="GB"></country>
</address>
</desc>
<listRelation>
<relation active="#struct-300845" type="direct"></relation>
</listRelation>
<tutelles>
<tutelle active="#struct-300845" type="direct">
<org type="institution" xml:id="struct-300845" status="VALID">
<orgName>University of Dundee</orgName>
<desc>
<address>
<country key="FR"></country>
</address>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>Royaume-Uni</country>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1111/j.1365-2958.2010.07206.x</idno>
<series>
<title level="j">Molecular Microbiology</title>
<idno type="ISSN">0950-382X</idno>
<imprint>
<date type="datePub">2010-05-12</date>
</imprint>
</series>
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<keywords scheme="mix" xml:lang="fr">
<term>Life Sciences</term>
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<front>
<div type="abstract" xml:lang="en">Streptomyces scabies is one of a group of organisms that causes the economically important disease potato scab. Analysis of the S. scabies genome sequence indicates that it is likely to secrete many proteins via the twin arginine protein transport (Tat) pathway, including several proteins whose coding sequences may have been acquired through horizontal gene transfer and share a common ancestor with proteins in other plant pathogens. Inactivation of the S. scabies Tat pathway resulted in pleiotropic phenotypes including slower growth rate and increased permeability of the cell envelope. Comparison of the extracellular proteome of the wild type and ΔtatC strains identified 73 predicted secretory proteins that were present in reduced amounts in the tatC mutant strain, and 47 Tat substrates were verified using a Tat reporter assay. The ΔtatC strain was almost completely avirulent on Arabidopsis seedlings and was delayed in attaching to the root tip relative to the wild type strain. Genes encoding 14 candidate Tat substrates were individually inactivated, and seven of these mutants were reduced in virulence compared to the wild type strain. We conclude that the Tat pathway secretes multiple proteins that are required for full virulence.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Royaume-Uni</li>
<li>États-Unis</li>
</country>
<region>
<li>État de New York</li>
</region>
<settlement>
<li>Ithaca (New York)</li>
</settlement>
<orgName>
<li>Université Cornell</li>
</orgName>
</list>
<tree>
<country name="Royaume-Uni">
<region name="État de New York">
<name sortKey="Joshi, Madhumita V" sort="Joshi, Madhumita V" uniqKey="Joshi M" first="Madhumita V" last="Joshi">Madhumita V. Joshi</name>
</region>
<name sortKey="Antelmann, Haike" sort="Antelmann, Haike" uniqKey="Antelmann H" first="Haike" last="Antelmann">Haike Antelmann</name>
<name sortKey="Chandra, Govind" sort="Chandra, Govind" uniqKey="Chandra G" first="Govind" last="Chandra">Govind Chandra</name>
<name sortKey="Fyans, Joanna K" sort="Fyans, Joanna K" uniqKey="Fyans J" first="Joanna K" last="Fyans">Joanna K. Fyans</name>
<name sortKey="Hecker, Michael" sort="Hecker, Michael" uniqKey="Hecker M" first="Michael" last="Hecker">Michael Hecker</name>
<name sortKey="Hutchings, Matthew I" sort="Hutchings, Matthew I" uniqKey="Hutchings M" first="Matthew I" last="Hutchings">Matthew I. Hutchings</name>
<name sortKey="Loria, Rosemary" sort="Loria, Rosemary" uniqKey="Loria R" first="Rosemary" last="Loria">Rosemary Loria</name>
<name sortKey="Mann, Stefan G" sort="Mann, Stefan G" uniqKey="Mann S" first="Stefan G" last="Mann">Stefan G. Mann</name>
<name sortKey="Palmer, Tracy" sort="Palmer, Tracy" uniqKey="Palmer T" first="Tracy" last="Palmer">Tracy Palmer</name>
<name sortKey="Toth, Ian" sort="Toth, Ian" uniqKey="Toth I" first="Ian" last="Toth">Ian Toth</name>
<name sortKey="Widdick, David" sort="Widdick, David" uniqKey="Widdick D" first="David" last="Widdick">David Widdick</name>
</country>
</tree>
</affiliations>
</record>

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