Abstract
The Ralstonia solanacearum species complex (RSSC) can be divided into four phylotypes, and includes phenotypically diverse bacterial strains that cause bacterial wilt on various host plants. This study used 93 RSSC isolates responsible for potato bacterial wilt in Korea, and investigated their phylogenetic relatedness based on the analysis of phylotype, biovar, and host range. Of the 93 isolates, twenty-two were identified as biovar 2, eight as biovar 3, and sixty-three as biovar 4. Applied to the phylotype scheme, biovar 3 and 4 isolates belonged to phylotype I, and biovar 2 isolates belonged to phylotype IV. This classification was consistent with phylogenetic trees based on 16S rRNA and egl gene sequences, in which biovar 3 and 4 isolates clustered to phylotype I, and biovar 2 isolates clustered to phylotype IV. Korean biovar 2 isolates were distinct from biovar 3 and 4 isolates pathologically as well as geneticallyall biovar 2 isolates were nonpathogenic to peppers. Additionally, in host-determining assays, we found uncommon strains among biovar 2 of phylotype IV, which were the tomato-nonpathogenic strains. Since tomatoes are known to be highly susceptible to RSSC, to the best of our knowledge this is the first report of tomatononpathogenic potato strains. These results imply the potential prevalence of greater RSSC diversity in terms of host range than would be predicted based on phylogenetic analysis.
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Claims 11
Claim · model-written summary
Twenty-two of the 93 isolates were biovar 2.
- Taxon
- potato
Solanum tuberosume0 - Interactor
- RSSCe0pathogen
- Outcome
- biovar 2e1
- Value
- twenty-twoe1
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e1“Of the 93 isolates, twenty-two were identified as biovar 2, eight as biovar 3, and sixty-three as biovar 4”
Claim · model-written summary
Eight of the 93 isolates were biovar 3.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e1“Of the 93 isolates, twenty-two were identified as biovar 2, eight as biovar 3, and sixty-three as biovar 4”
Claim · model-written summary
Sixty-three of the 93 isolates were biovar 4.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- RSSCe0pathogen
- Outcome
- biovar 4e1
- Value
- sixty-threee1
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e1“Of the 93 isolates, twenty-two were identified as biovar 2, eight as biovar 3, and sixty-three as biovar 4”
Claim · model-written summary
Biovar 3 and 4 isolates belonged to phylotype I.
- Taxon
- potatoSolanum tuberosume0
- Material
- biovar 3 and 4 isolatese2
- Interactor
- RSSCe0pathogen
- Outcome
- phylotype Ie2
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e2“Applied to the phylotype scheme, biovar 3 and 4 isolates belonged to phylotype I, and biovar 2 isolates belonged to phylotype IV”
Claim · model-written summary
Biovar 2 isolates belonged to phylotype IV.
- Taxon
- potatoSolanum tuberosume0
- Material
- biovar 2 isolatese2
- Interactor
- RSSCe0pathogen
- Outcome
- phylotype IVe2
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e2“Applied to the phylotype scheme, biovar 3 and 4 isolates belonged to phylotype I, and biovar 2 isolates belonged to phylotype IV”
Claim · model-written summary
The phylotype classification was consistent with phylogenetic trees based on 16S rRNA and egl gene sequences.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- RSSCe0pathogen
- Outcome
- consistent with phylogenetic treese3
- Qualifier
- based on 16S rRNA and egl gene sequencese3
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e3“This classification was consistent with phylogenetic trees based on 16S rRNA and egl gene sequences”
Claim · model-written summary
Korean biovar 2 isolates were pathologically and genetically distinct from biovar 3 and 4 isolates.
- Taxon
- potatoSolanum tuberosume0
- Material
- Korean biovar 2 isolatese4
- Interactor
- RSSCe0pathogen
- Outcome
- distincte4
- Qualifier
- pathologically as well as geneticallye4
- Comparator
- biovar 3 and 4 isolatese4
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e4“Korean biovar 2 isolates were distinct from biovar 3 and 4 isolates pathologically as well as genetically”
Claim · model-written summary
All biovar 2 isolates were nonpathogenic to peppers.
CapsicumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e5“all biovar 2 isolates were nonpathogenic to peppers”
Claim · model-written summary
Uncommon biovar 2 strains of phylotype IV were nonpathogenic to tomato.
- Taxon
- tomato
Solanum lycopersicume6 - Material
- biovar 2 of phylotype IVe6
- Interactor
- RSSCe0pathogen
- Outcome
- uncommon strainse6
- Qualifier
- tomato-nonpathogenic strainse6
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e6“in host-determining assays, we found uncommon strains among biovar 2 of phylotype IV, which were the tomato-nonpathogenic strains”
Claim · model-written summary
To the authors' knowledge this is the first report of tomato-nonpathogenic potato strains.
- Taxon
- potatoSolanum tuberosume0
- Material
- tomatononpathogenic potato strainse7
- Interactor
- RSSCe0pathogen
- Outcome
- first reporte7
- Qualifier
- to the best of our knowledgee7
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e7“to the best of our knowledge this is the first report of tomatononpathogenic potato strains”
Claim · model-written summary
The potential prevalence of greater RSSC diversity in host range than predicted by phylogeny is implied.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- RSSCe0pathogen
- Outcome
- RSSC diversity in terms of host rangee1
- Qualifier
- potential prevalencee1
- Setting
- Koreae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“93 RSSC isolates responsible for potato bacterial wilt in Korea”
e1“These results imply the potential prevalence of greater RSSC diversity in terms of host range than would be predicted based on phylogenetic analysis”