Abstract
Agrobacterium radiobacter is the only known non-phytopathogenic species in Agrobacterium genus. In this study, the whole-genome sequence of A. radiobacter type strain DSM 30147T was described and compared to the other available Agrobacterium genomes. This bacterium has a genome size of 7,122,065 bp distributed in 612 contigs, including 6,834 protein-coding genes and 41 RNA genes. It harbors a circular chromosome and a linear chromosome but not a tumor-inducing (Ti) plasmid. To the best of our knowledge, this is the first report of a genome from the A. radiobacter species. In addition, an emended description of A. radiobacter is described. This study reveals information that enhances the current understanding of its non-phytopathogenicity and its phylogenetic position within Agrobacterium genus.
Highlights
Agrobacterium radiobacter DSM 30147T (= ATCC 19358T) was first isolated from saprobic soil in 1902 as Bacillus radiobacter [1] and obtained its current name until Agrobacterium genus established by Conn in 1942 [2]
A. rubi, A. vitis and A. larrymoorei were identified within the Agrobacterium genus [3,4,5,6]
A. rhizogenes was transferred to Rhizobium genus, as Rhizobium rhizogenes, based on multilocus sequence analysis (MLSA) using several housekeeping genes [7,8]
Summary
Agrobacterium radiobacter DSM 30147T (= ATCC 19358T) was first isolated from saprobic soil in 1902 as Bacillus radiobacter [1] and obtained its current name until Agrobacterium genus established by Conn in 1942 [2]. Conn divided Agrobacterium into 3 species, A. radiobacter, A. tumefaciens and A. rhizogenes [2]. Two strains in Biovar I have been completely sequenced: Agrobacterium sp. The genome sequencing revealed that these strains contained two chromosomes and different numbers of plasmids.
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