Source:http://linkedlifedata.com/resource/pubmed/id/16347644
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
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| pubmed:dateCreated |
2010-6-25
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| pubmed:abstractText |
Syringomycin is a necrosis-inducing phytotoxin produced by Pseudomonas syringae pv. syringae. To determine whether syringomycin production is a determinant in virulence or pathogenicity, we isolated nontoxigenic (Tox) Tn5-containing mutants and then quantitatively evaluated them for the ability to multiply and cause disease in immature sweet-cherry fruits. Transposon Tn5 was delivered to Tox strain B301D-R by using the suicide vector, pGS9, and the resultant kanamycin-resistant (Km) colonies were screened for changes in syringomycin production by testing for antibiosis against Geotrichum candidum. Southern blot analysis of KpnI-and EcoRI-digested DNA showed that 15 (0.3%) Tox mutants were isolated which had Tn5 inserted into 1 of 14 distinct loci. Phenotypic characterization of the Tox mutants identified three major groups, which were differentiated by pathogenicity and ability to cause a tobacco hypersensitive reaction (HR). The eight strains in group A were pathogenic (Path) in cherry fruit assays, but the disease index was 17 to 66% lower (significant at P = 0.01) than for the parental Tox strain, B301D-R. The population dynamics of group A strains W4S770 and W4S116 in cherry fruits were, however, indistinguishable from that of strain B301D-R. The remaining seven Tox strains were nonpathogenic; group B strain W4S2545 (Path HR) and group C strain W4S468 (Path HR) developed significantly lower populations (10 to 10 CFU per cherry fruit) 3 days after inoculation than strain B301D-R did (nearly 10 CFU per fruit). The data indicate that syringomycin is not essential for pathogenicity, but contributes significantly to virulence.
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| pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-11708,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-13184240,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-16346445,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-16346739,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-16346988,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-16347352,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-16349789,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-16665211,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-231729,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-2990912,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-2995307,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-3011734,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-3023280,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-3318671,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-344137,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-388356,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-3980301,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-525781,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-5331240,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-6090422,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-6315684,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-6327612,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16347644-7363328
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jun
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| pubmed:issn |
0099-2240
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
54
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
1345-53
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| pubmed:dateRevised |
2010-9-20
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| pubmed:year |
1988
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| pubmed:articleTitle |
Evaluation of the Role of Syringomycin in Plant Pathogenesis by Using Tn5 Mutants of Pseudomonas syringae pv. syringae Defective in Syringomycin Production.
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| pubmed:affiliation |
Department of Plant Pathology, Washington State University, Pullman, Washington 99164-6430.
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| pubmed:publicationType |
Journal Article
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