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Pichia cecembensis sp. nov. isolated from a papaya fruit (Carica papaya L., Caricaceae).

Authors
  • Bhadra, Bhaskar
  • Sreenivas Rao, R
  • Naveen Kumar, N
  • Chaturvedi, Preeti
  • Sarkar, Partha K
  • Shivaji, S
Type
Published Article
Journal
FEMS yeast research
Publication Date
Jun 01, 2007
Volume
7
Issue
4
Pages
579–584
Identifiers
PMID: 17316366
Source
Medline
License
Unknown

Abstract

The ascogenous yeast YS16T was isolated from a decaying papaya fruit. Phenotypic traits such as multilateral budding, spheroidal or elongate shape, pseudohyphae formation, asci with one or more ascospores, ability to ferment d-glucose, inability to assimilate nitrate and the presence of Q7 ubiquinone suggest its affiliation to the genus Pichia. The nearest phylogenetic neighbor, based on D1/D2 domain sequence of the 26S rRNA gene and ITS region sequence, was identified as Issatchenkia orientalis (NRRL Y-5396T, a synonym of Pichia kudriavzevii) with similarities of 98.2% and 97% respectively. In addition to the difference in the D1/D2 and ITS region sequence, YS16T differs from I. orientalis with respect to a number of phenotypic traits. However, in the phylogenetic analysis, YS16T showed close relatedness to the P. membranifaciens clade. Thus, it is proposed to assign the status of a new species to YS16T, for which the name P. cecembensis sp. nov. is proposed. The type strain of P. cecembensis sp. nov. is YS16T (=NRRL Y-27985T=JCM 13873T=CBS 10445T).

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