White poplar, or Populus alba L., has a wide natural habitat in Eurasia and is grown in cities for greening, as well as used for wood production, soil phytoremediation and in scientific research as a model object among trees.
More...White poplar, or Populus alba L., has a wide natural habitat in Eurasia and is grown in cities for greening, as well as used for wood production, soil phytoremediation and in scientific research as a model object among trees. P. alba, like other plants, interacts with a large number of symbiotic microorganisms, including endophytes, which inhabit its roots and promote the growth of the plant, help it to assimilate mineral elements from the soil, resist abiotic stress and fight pathogens. In our previous study, we characterized 14 microbial strains belonging to different species, representatives of which have already been described as plant endophytes. However, our dataset also included 2 strains belonging to the genera Sphingomonas (S6) and Microbacterium (S16), which were quite distant genetically from all species described in these genera. Among the 888 strains from the genus Sphingomonas, the non-typical strains TPD3008 (ANI = 96.562%) and TPD3009 (ANI = 96. 5149%) had similarity to S6 at the species level; among the 875 strains from the genus Microbacterium, one (strain 5K110) had similarity to S16 at the strain level (ANI = 99.911%), and the other two, MAG 80 (ANI = 96.0207%) and Bi128 (ANI = 95.7486%) - at the species level. However, the above strains have not been reported in any publication. This suggests that although members of the same species as Sphingomonas sp. S6 and Microbacterium sp. S16 have been sequenced by other research groups, they have not been fully characterized and described.
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