1887

Abstract

Some varieties of sugar beet, , cultivated in northern Spain have large deformations that resemble the tumours produced by species. In an attempt to isolate the agent responsible for these deformations, several endophytic slow-growing bacterial strains were isolated, the macroscopic morphology of which resembled that of species. These strains were not able to produce tumours in plants and, based on phylogenetic analysis of their 16S rRNA, they are closely related to the genus . Phenotypic and molecular characteristics of these strains revealed that they represent a species different from all species previously described. Sequence analysis of the 16S–23S rDNA intergenic spacer region indicated that these novel strains form a homogeneous group, related to , and . DNA–DNA hybridization confirmed that these strains represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is PL7HG1 (=LMG 21987=CECT 5829).

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2004-07-01
2019-12-08
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vol. , part 4, pp. 1271 - 1275

(A) Tumour-like deformations generated on plants (marked by an arrowhead). (B) Internal section of one of these deformations showing the vascular system.



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