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2018•Archives of Phytopathology and Plant ProtectionRequires access

Characterisation and diversity of Indian isolates of Ralstonia solanacearum causing bacterial wilt of Capsicum annuum L.

Dinesh Kumar Singh, Garima Chaudhary, Dhananjay Kumar Yadav

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Abstract

Genetic diversity of 13 isolates of Ralstonia solanacearum causing bacterial wilt in hot pepper and bell pepper (Capsicum annuum L.) from 6 states of India was assessed. All isolates of R. solanacearum belonged to biovar 3, race 1 and phylotype I. These isolates consisted of 4 distinct DNA types at 75% similarity coefficient using ERIC, BOX and REP-PCRs techniques. Multilocus sequence analysis of hrpB, fliC and egl genes of 6 isolates of R. solanacearum along with 2 out group bacteria was done and they showed high level of variability within these three regions of the genome involving in pathogenicity.

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Genetic diversity of 13 isolates of Ralstonia solanacearum causing bacterial wilt in hot pepper and bell pepper (Capsicum annuum L.) from 6 states of India was assessed. All isolates of R. solanacearum belonged to biovar 3, race 1 and phylotype I. These isolates consisted of 4 distinct DNA types at 75% similarity coefficient using ERIC, BOX and REP-PCRs techniques. Multilocus sequence analysis of hrpB, fliC and egl genes of 6 isolates of R. solanacearum along with 2 out group bacteria was done and they showed high level of variability within these three regions of the genome involving in pathogenicity.

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Available abstract

Genetic diversity of 13 isolates of Ralstonia solanacearum causing bacterial wilt in hot pepper and bell pepper (Capsicum annuum L.) from 6 states of India was assessed. All isolates of R. solanacearum belonged to biovar 3, race 1 and phylotype I. These isolates consisted of 4 distinct DNA types at 75% similarity coefficient using ERIC, BOX and REP-PCRs techniques. Multilocus sequence analysis of hrpB, fliC and egl genes of 6 isolates of R. solanacearum along with 2 out group bacteria was done and they showed high level of variability within these three regions of the genome involving in pathogenicity.

Key concepts: Ralstonia solanacearum, Bacterial wilt, Biovar, Biology, Pepper, Phylotype, Capsicum annuum, Genetic diversity

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Characterisation and diversity of Indian isolates of Ralstonia solanacearum causing bacterial wilt of Capsicum annuum L. — Research Paper | ScholarLens