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Yeasts colonizing the leaf surfaces.

Elena Sláviková1, Renata Vadkertiová, Dana Vránová

  • 1Culture Collection of Yeasts, Institute of Chemistry Slovak Academy of Sciences, Bratislava, Slovakia. Elena.Slavikova@savba.sk

Journal of Basic Microbiology
|July 25, 2007
PubMed
Summary

Leaf surface yeasts were identified in a forest park, revealing common species like Aureobasidium pullulans and Cryptococcus laurentii across all tree types. Yeast diversity varied, with some species favoring deciduous trees.

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Published on: November 8, 2006

Area of Science:

  • Microbiology
  • Ecology
  • Mycology

Background:

  • Yeasts inhabit diverse environments, including plant surfaces.
  • Understanding leaf surface yeast communities is crucial for ecological studies.

Purpose of the Study:

  • To identify and characterize yeast communities on tree leaf surfaces in a forest park.
  • To determine the prevalence and distribution of different yeast species across various tree types.

Main Methods:

  • Isolation and identification of yeast strains from leaf and needle samples of ten tree species.
  • Utilizing standard microbiological techniques for yeast cultivation and characterization.
  • Analysis of yeast species frequency and distribution across different host trees.

Main Results:

  • 137 yeast strains from 13 genera and 17 species were isolated.
  • Aureobasidium pullulans, Cryptococcus laurentii, and Pichia anomala were the most frequent, found on all ten tree species.
  • Metschnikowia pulcherrima and Lachancea thermotolerans were more common on deciduous trees.
  • Rhodotorula glutinis was the most frequent carotenoid-producing yeast.
  • Ascomycetous and basidiomycetous yeasts were found in roughly equal proportions on leaves, unlike soil samples.

Conclusions:

  • Leaf surfaces host a diverse yeast community with specific species exhibiting broad host ranges.
  • The distribution patterns suggest ecological preferences among yeast species, with some favoring deciduous trees.
  • Leaf surface yeast composition differs significantly from soil yeast communities in the same habitat.