Phylogenetic ML tree based on 1,493-bp alignment of concatenated nucleotide sequences of dnaK (489 bp), glnII (519 bp), and recA (482 bp). Only bootstrap probability values of ≥70% (over 100 replicates) are indicated at the branching points. The scale bar indicates the number of substitutions per site. Soybean isolates are shown in bold, with their IGS haplotypes indicated. The letter “T” indicates the type strain of the species. Accession numbers of sequences extracted from GenBank are as follows: CCBAU 10071T, AY923039 (dnaK), AY386780 (glnII), and AY591566 (recA); LMG 18230T, AY923041 (dnaK), AY386775 (glnII), and AY591564 (recA); USDA 6T, AM168362 (dnaK), AF169582 (glnII), and AM168341 (recA); USDA 110, BA000040 (complete genome); LMG 21987T, AY923046 (dnaK), AB353733 (glnII), and AB353734 (recA); BTA-1T, AY923047 (dnaK), AY386765 (glnII), and AY591553 (recA); USDA 76T, AM168363 (dnaK), AY599117 (glnII), and AM168342 (recA); ORS 278, CU234118 (complete genome); and BTAI1, CP000495 (complete genome).