Classification of , an Unnamed Species, and spp. in rRNA Superfamily IV Free

Abstract

Thermal melting profiles of hybrids between H-labeled rRNA of , the causal agent of corky root of lettuce, and chromosomal DNAs from 27 species of gram-negative bacteria indicated that the genus belongs to superfamily IV of De Ley. On the basis of the melting temperatures of hybrids with rRNAs from the type strains of , and strains constitute a separate branch in superfamily IV, which is closely related to but separate from branches containing spp., and and sp. strain WI4 are located toward the base of the rRNA branch. hybridization indicated that is equidistant from sp. strain WI4 and Sequences of 270 bp of 16S ribosomal DNAs from eight strains of spp., eight strains of spp., and indicated that and sp. strains WI4 and CA16 are genetically more closely related to than to spp. Thus, may need to be transferred to the genus on the basis of the results of further study.

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1993-01-01
2024-03-29
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