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Yeasts associated with pollinating bees and flower nectar.

D K Sandhu1, M K Waraich

  • 1Department of Biology, Guru Nanak Dev University, 143005, Amritsar, India.

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|November 14, 2013
PubMed
Summary
This summary is machine-generated.

This study investigated yeast diversity in bee honey stomachs and flower nectar, identifying 766 isolates. The yeast genus Candida dominated, with Dekkera intermedia and Candida blankii being most frequent in bees and flowers, respectively.

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Area of Science:

  • Microbiology
  • Mycology
  • Ecology
  • Entomology

Background:

  • Yeasts are crucial microorganisms in various ecosystems, including those associated with pollinators.
  • Understanding yeast-pollinator interactions is vital for assessing pollination efficiency and ecosystem health.
  • Previous research has explored yeast communities in bees and flowers, but comprehensive comparative studies are limited.

Purpose of the Study:

  • To comprehensively characterize and compare the yeast mycobiota associated with pollinating bees and their nectar resources.
  • To identify dominant yeast genera and species in both bee honey stomachs and flower nectar.
  • To determine the overlap in yeast species between these two ecological niches.

Main Methods:

  • Collected 328 honey stomach samples from 7 bee species and 342 nectar samples from 9 flower species.
  • Isolated and identified yeasts using standard microbiological techniques.
  • Quantified yeast isolates, genera, and species diversity from both sources.

Main Results:

  • A total of 766 yeast isolates, comprising 16 genera and 47 species, were identified.
  • The genus Candida was most prevalent in both bee and nectar samples.
  • Dekkera intermedia was the most frequent isolate from honey stomachs, while Candida blankii dominated nectar samples. Xylocopa sp. and Citrus medica yielded the highest yeast diversity.

Conclusions:

  • Significant yeast diversity exists in both bee and flower nectar environments, with considerable overlap in species composition.
  • Specific yeast species show distinct preferences for either bee or nectar habitats.
  • The findings contribute to understanding the complex yeast-pollinator microbiome and its ecological implications.