Table 1.

Reference strains included in this study.

Code	Host species	Strain	References
A6	H. coronarium	Rhizobium sullae sp. nov. RHA6	Benguedouar et al. [28]
Hca1	H. carnosum	Pseudomonas sp. KD	Benhizia et al. [9]
Hp7	H. pallidum	Enterobacter kobei
Hs1	H. spinosissimum	Pseudomonas sp. NZ096
HnA	H. naudinianum	Panotoea agglomerans	Torrche et al. [29]