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      Draft Genome Sequence of Highly Virulent Race 4/Biovar 3 of Ralstonia solanacearum CaRs_Mep Causing Bacterial Wilt in Zingiberaceae Plants in India

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          ABSTRACT

          The genome of Ralstonia solanacearum CaRs_Mep, a race 4/biovar 3/phylotype I bacterium causing wilt in small cardamom and other Zingiberaceae plants, was sequenced. Analysis of the 5.7-Mb genome sequence will aid in better understanding of the genetic determinants of host range, host jump, survival, pathogenicity, and virulence of race 4 of R. solanacearum.

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          A unique DNA repair and recombination gene (recN) sequence for identification and intraspecific molecular typing of bacterial wilt pathogen Ralstonia solanacearum and its comparative analysis with ribosomal DNA sequences.

          Aundy Kumar, Thekkan Puthiyaveedu Prameela, Rajamma Suseelabhai (2013)
          Ribosomal gene sequences are a popular choice for identification of bacterial species and, often, for making phylogenetic interpretations. Although very popular, the sequences of 16S rDNA and 16-23S intergenic sequences often fail to differentiate closely related species of bacteria. The availability of complete genome sequences of bacteria, in the recent years, has accelerated the search for new genome targets for phylogenetic interpretations. The recently published full genome data of nine strains of R. solanacearum, which causes bacterial wilt of crop plants, has provided enormous genomic choices for phylogenetic analysis in this globally important plant pathogen. We have compared a gene candidate recN, which codes for DNA repair and recombination function, with 16S rDNA/16-23S intergenic ribosomal gene sequences for identification and intraspecific phylogenetic interpretations in R. solanacearum. recN gene sequence analysis of R. solanacearum revealed subgroups within phylotypes (or newly proposed species within plant pathogenic genus, Ralstonia), indicating its usefulness for intraspecific genotyping. The taxonomic discriminatory power of recN gene sequence was found to be superior to ribosomal DNA sequences. In all, the recN-sequence-based phylogenetic tree generated with the Bayesian model depicted 21 haplotypes against 15 and 13 haplotypes obtained with 16S rDNA and 16-23S rDNA intergenic sequences, respectively. Besides this, we have observed high percentage of polymorphic sites (S 23.04%), high rate of mutations (Eta 276) and high codon bias index (CBI 0.60), which makes the recN an ideal gene candidate for intraspecific molecular typing of this important plant pathogen.
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            Draft Genome Sequence of Ralstonia solanacearum Race 4 Biovar 4 Strain SD54

            Weiwei Shan, Xiaohui Yang, Weiqing Ma … (2013)
            Ralstonia solanacearum is an important etiological agent that can cause serious bacterial wilt in a very wide range of potential host plants, including ginger. Here, we report the complete genome sequence of R. solanacearum SD54, a race 4 biovar 4 (R4B4) strain from a diseased ginger plant in China.
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              Diversity of Ralstonia solanacearum Strains on the Andaman Islands in India

              K Sakthivel, R. GAUTAM, K. KUMAR … (2016)
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                Author and article information

                Journal
                Journal ID (nlm-ta): Genome Announc
                Journal ID (iso-abbrev): Genome Announc
                Journal ID (hwp): ga
                Journal ID (pmc): ga
                Journal ID (publisher-id): GA
                Title: Genome Announcements
                Publisher: American Society for Microbiology (1752 N St., N.W., Washington, DC )
                ISSN (Electronic): 2169-8287
                Publication date (Electronic): 5 January 2017
                Publication date Collection: January 2017
                Volume: 5
                Issue: 1
                Electronic Location Identifier: e01420-16
                Affiliations
                [a ]Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
                [b ]Division of Crop Protection, ICAR-Indian Institute of Spices Research, Kozhikode, Kerala, India
                Author notes
                Address correspondence to Aundy Kumar, kumar@ 123456iari.res.in .
                Article
                Publisher ID: genomeA01420-16
                DOI: 10.1128/genomeA.01420-16
                PMC ID: 5255910
                PubMed ID: 28057749
                SO-VID: 5ec14077-678b-430c-99d9-f5d29e6034c4
                Copyright © Copyright © 2017 Kumar et al.
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

                History
                Date received : 25 October 2016
                Date accepted : 1 November 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 2, Words: 1192
                Funding
                Funded by: Indian Council of Agricultural Research (ICAR) https://doi.org/10.13039/501100001503
                Award ID: CRP (Genomics)
                Award Recipient : KUMAR Aundy
                Categories
                Subject: Prokaryotes
                Custom metadata
                cover-date January 2017

                ScienceOpen disciplines: Genetics
                Data availability:
                ScienceOpen disciplines: Genetics

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