Mesorhizobium calcicola sp. nov., Mesorhizobium waitakense sp. nov., Mesorhizobium sophorae sp. nov., Mesorhizobium newzealandense sp. nov. and Mesorhizobium kowhaii sp. nov. isolated from Sophora root nodules

In total, 31 strains of Gram-stain-negative, rod-shaped bacteria were isolated from root nodules and authenticated as rhizobia on this host. Based on 16S rRNA gene phylogeny, they were shown to belong to the genus , with the representative strains ICMP 19560 , ICMP 19523 , ICMP 19535 , ICMP 19545 an...

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Published inInternational journal of systematic and evolutionary microbiology Vol. 66; no. 2; pp. 786 - 795
Main Authors De Meyer, Sofie E, Tan, Heng Wee, Andrews, Mitchell, Heenan, Peter B, Willems, Anne
Format Journal Article
LanguageEnglish
Published England 01.02.2016
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Summary:In total, 31 strains of Gram-stain-negative, rod-shaped bacteria were isolated from root nodules and authenticated as rhizobia on this host. Based on 16S rRNA gene phylogeny, they were shown to belong to the genus , with the representative strains ICMP 19560 , ICMP 19523 , ICMP 19535 , ICMP 19545 and ICMP 19512 being related most closely to SCAU7 (99.9-99.6 % similarity), ICMP 19515 (99.7-99.6 %) and UMP-CA7 (99.7-99.5 %). Additionally, the novel strains formed distinct groups based on housekeeping gene sequence analysis and were closely related to ICMP 19557 (93.5-94.9, 92.5-95.6 and 94.2-96.0 %), ICMP 19515 (93.1-97.7, 93.5-95.4 and 94.8-96.8 %) and UMP-CA7 (93.2-97.2, 94.6-96.8 and 95.5-97.3 %) for , and , respectively. Chemotaxonomic data supported the assignment of the strains to the genus , and DNA-DNA hybridizations, matrix-assisted laser desorption/ionization time-of-flight MS analysis, enterobacterial repetitive intergenic consensus PCR, physiological and biochemical tests allowed the genotypic and phenotypic differentiation from their nearest neighbouring species. Therefore, these strains represent five novel species for which the names sp. nov. (type strain ICMP 19560  = LMG 28224  = HAMBI 3609 ), sp. nov. (type strain ICMP 19523  = LMG 28227  = HAMBI 3605 ), sp. nov. (type strain ICMP 19535  = LMG 28223  = HAMBI 3606 ), sp. nov. (type strain ICMP 19545  = LMG 28226  = HAMBI 3607 ) and sp. nov. (type strain ICMP 19512  = LMG 28222  = HAMBI 3603 ) are proposed.
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ISSN:1466-5026
1466-5034
DOI:10.1099/ijsem.0.000796