Lentzea chajnantorensis sp. nov., an actinobacterium from a very high altitude Cerro Chajnantor gravel soil in northern Chile
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The taxonomic position of a filamentous actinobacterial strain, isolate H45T, recovered from a high altitude Atacama Desert gravel soil, was established using a polyphasic approach. The strain, which is known to produce novel dienes, has chemotaxonomic and morphological properties typical of the genus Lentzea and formed a distinct branch in the Lentzea 16S rRNA gene tree that is closely related to the type strain of Lentzea kentuckyensis. The two strains were distinguished using a combination of phenotypic properties and by a DNA:DNA relatedness value of 37.6 ± 4.0%. On the basis of these genotypic and phenotypic data it is proposed that isolate H45T (=NCIMB 4966T = NRRL B-65282T) be classified in the genus Lentzea as Lentzea chajnantorensis sp. nov.
KeywordsLentzea Polyphasic taxonomy Atacama Desert
This study was partly funded through a UK Newton Project for UK-Chile collaboration (T I CCA 586). Thanks are due to the staff of the European Southern Observatory for permission and assistance in collecting soil samples from Cerro Chajnantor. H.I. is indebted to the Malaysian Government for a Ph.D. scholarship and M.G. for an Emeritus Fellowship from the Leverhulme Trust. The authors are indebted to Dr. Maria del Carmen Montero-Calasanz for help in interpreting the BIOLOG data.
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