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Int J Syst Evol Microbiol. 2019 Jan 2. doi: 10.1099/ijsem.0.003180. [Epub ahead of print]

Transfer of the waterfall source isolate Pectobacterium carotovorum M022 to Pectobacterium fontis sp. nov., a deep-branching species within the genus Pectobacterium.

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2​Department of Biology, Faculty of Sciences, Moulay Ismaïl University, 50 000 Meknes, Morocco.
1​Institute for Integrative Biology of the Cell (I2BC), CEA CNRS Univ. Paris-Sud, University Paris-Saclay, 91198 Gif-sur-Yvette, France.
3​National Federation of Seed Potato Growers (FN3PT-RD3PT), 75008 Paris, France.
4​Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.


Pectobacterium carotovorum M022T has been isolated from a waterfall source in Selangor district (Malaysia). Using genomic and phenotypic tests, we re-examined the taxonomical position of this strain. Based on 14 concatenated housekeeping genes (fusA, rpoD, rpoS, acnA, purA, gyrB, recA, mdh, mtlD, groEL, secY, glyA, gapA and rplB), multi-locus sequence analysis revealed that strain M022T falls into a novel clade separated from the other Pectobacterium species. The in silico DNA-DNA hybridization and average nucleotide identity values were lower than the 70 and 95 % threshold values, respectively. In addition, by combining genomic and phenotypic tests, strain M022T may be distinguished from the other Pectobacterium isolates by its incapacity to grow on d(+)-xylose, l-rhamnose, cellobiose and lactose. Strain M022T (=CFBP 8629T=LMG 30744T) is proposed as the type strain of the Pectobacteriumfontis sp. nov.


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