Isolation and characterization of a novel leaf-inhabiting osmo-, salt-, and alkali-tolerant Yarrowia lipolytica yeast strain

Renata Zvyagilskaya, Ekaterina Andreishcheva, M. Ines M Soares, Inna Khozin, Abraham Berhe, Bengt L. Persson

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Salt-excreting leaves of Atriplex halimus plants harvested in the central Negev Highlands of Israel were screened for yeasts inhabiting their surfaces. Several aerobic, moderately salt- and alkali-tolerant yeasts were isolated. One of the isolates (tentatively designated S-8) was identified as Yarrowia lipolytica (Wick.) van der Walt and Arx, on the basis of its morphological, biochemical/physiological characteristics, and of quantitative chemotaxonomic and molecular marker analyses. However, the strain is distinguished from the known members of the type Y. lipolytica strain by its pronounced osmo-, salt-, and pH tolerance. Cells displayed a unique capacity to grow over a wide pH range (from 3.5 to 11.5) with a pH optimum at 4.5 to 7.5. It is proposed that the S-8 strain be assigned to a single Y. lipolytica species as its anamorpha, or as a new variety, Y. lipolytica var. alkalitolerance. The ecophysiological properties and biotechnological potentials of the new strain are discussed.

Original languageEnglish
Pages (from-to)289-303
Number of pages15
JournalJournal of Basic Microbiology
Volume41
Issue number5
DOIs
StatePublished - 1 Jan 2001
Externally publishedYes

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