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  • Title: Burkholderia symbiotica sp. nov., isolated from root nodules of Mimosa spp. native to north-east Brazil.
    Author: Sheu SY, Chou JH, Bontemps C, Elliott GN, Gross E, James EK, Sprent JI, Young JPW, Chen WM.
    Journal: Int J Syst Evol Microbiol; 2012 Sep; 62(Pt 9):2272-2278. PubMed ID: 22081715.
    Abstract:
    Four strains, designated JPY-345(T), JPY-347, JPY-366 and JPY-581, were isolated from nitrogen-fixing nodules on the roots of two species of Mimosa, Mimosa cordistipula and Mimosa misera, that are native to North East Brazil, and their taxonomic positions were investigated by using a polyphasic approach. All four strains grew at 15-43 °C (optimum 35 °C), at pH 4-7 (optimum pH 5) and with 0-2 % (w/v) NaCl (optimum 0 % NaCl). On the basis of 16S rRNA gene sequence analysis, strain JPY-345(T) showed 97.3 % sequence similarity to the closest related species Burkholderia soli GP25-8(T), 97.3 % sequence similarity to Burkholderia caryophylli ATCC25418(T) and 97.1 % sequence similarity to Burkholderia kururiensis KP23(T). The predominant fatty acids of the strains were C(18 : 1)ω7c (36.1 %), C(16 : 0) (19.8 %) and summed feature 3, comprising C(16 : 1)ω7c and/or C(16 : 1)ω6c (11.5 %). The major isoprenoid quinone was Q-8 and the DNA G+C content of the strains was 64.2-65.7 mol%. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and several uncharacterized aminophospholipids and phospholipids. DNA-DNA hybridizations between the novel strain and recognized species of the genus Burkholderia yielded relatedness values of <51.8 %. On the basis of 16S rRNA and recA gene sequence similarities and chemotaxonomic and phenotypic data, the four strains represent a novel species in the genus Burkholderia, for which the name Burkholderia symbiotica sp. nov. is proposed. The type strain is JPY-345(T) (= LMG 26032(T) = BCRC 80258(T) = KCTC 23309(T)).
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