Yeasts in Hevea brasiliensis Latex
Mikrobiologiia
|August 31, 2017
Summary
Yeast communities in Hevea brasiliensis latex change over time. Initially dominated by Candida heveicola, latex modification leads to increased yeast diversity and decreased abundance, with new species emerging.
Area of Science:
- Microbiology
- Plant Science
- Mycology
Background:
- The latex of the caoutchouc tree (Hevea brasiliensis) harbors a unique microbial community.
- Understanding yeast dynamics in Hevea latex is crucial for managing latex properties and potential applications.
Purpose of the Study:
- To investigate yeast abundance and species diversity in Hevea brasiliensis latex, leaves, and soil.
- To characterize the succession of yeast communities during latex natural modification.
Main Methods:
- Sampling of fresh latex, modified latex, green leaves, and soil from Hevea brasiliensis.
- Culturing and identification of yeast species using standard microbiological techniques.
- Quantification of yeast abundance (CFU/g) and assessment of species diversity.
Main Results:
- Fresh Hevea latex was dominated by Candida heveicola (up to 5.5 log CFU/g).
- Latex modification resulted in decreased yeast abundance and increased species diversity.
- Thickened and solidified latex contained epiphytic (Kodamea ohmeri, Debaryomyces hansenii, Rhodotorula mucilaginosa) and synanthropic (Candida parapsilosis, Cutaneotrichosporon arbori-formis) yeasts.
Conclusions:
- Yeast succession plays a role in the natural modification of Hevea latex.
- The shift in yeast communities may influence the development of antifungal activity within the latex.
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