Isolation and characterization of a novel leaf-inhabiting osmo-, salt-, and alkali-tolerant Yarrowia lipolytica yeast strain.
J Basic Microbiol
; 41(5): 289-303, 2001.
Article
em En
| MEDLINE
| ID: mdl-11688215
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.
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Base de dados:
MEDLINE
Assunto principal:
Cloreto de Sódio
/
Folhas de Planta
/
Yarrowia
/
Atriplex
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article