ENDOFIT ACHITQILARNING TURLI STRESS SHAROITLARIGA MOSLASHISH XUSUSIYATLARI
Endophytic yeasts are microorganisms that inhabit the internal tissues of plants and are adapted to various environmental stress factors. In this study, the adaptive properties of endophytic yeast strains isolated from different plant organs were investigated under temperature, salinity (NaCl), and pH conditions. The ability of the strains to produce biomass at 20 °C, 28 °C, and 40 °C was evaluated, as well as their growth activity at NaCl concentrations ranging from 0 to 20% and pH values of 3, 7, and 9. The results demonstrated that 28 °C is the optimal temperature for all tested strains. Growth was maintained under 5–15% NaCl conditions, whereas tolerance to 20% NaCl was observed only in certain strains. At neutral pH 7, all strains exhibited good growth, while some strains also showed adaptation to alkaline conditions. These findings confirm the ecological adaptability of endophytic yeasts and highlight their biotechnological potential.
1. Solis MJL, Yurkov A, dela Cruz TE, Unterseher MJM (2015) Leafinhabiting endophytic yeasts are abundant but unevenly distributed in three Ficus species from botanical garden greenhouses in Germany. Mycol Prog 14:1019. https://doi.org/10.1007/s1155 7-014-1019-6
2. Cui Y, Jiang X, Qi F, Liu Y (2012) Isolation and primary identification of endophytic yeast from wine grape [J] China Brewing 9:82–84.
3. Glushakova A, Kachalkin A (2017b) Endophytic yeasts in Malus domestica and Pyrus communis fruits under anthropogenic impact. Microbiology 86:128–135. https://doi.org/10.1134/S0026 261716060102
4. Wachowska U, Irzykowski W, Jędryczka M (2018) Agrochemicals: Effect on genetic resistance in yeasts colonizing winter wheat kernels. Ecotox Environ Safe 162:77–84. https://doi.org/10.1016/j. ecoenv.2018.06.042
5. Jin, Y., Zhang, L., & Li, Q. (2019). High-temperature fermentation characteristics of Pichia kudriavzevii and its applications in biofuel production. Bioresource Technology, 275, 25-33.
6. Nguyen, T. H., & Nguyen, D. L. (2020). Bioconversion of agricultural residues into biofuels using Pichia kudriavzevii. Renewable Energy, 147, 1907-1915.
7. Chen, R., Zhang, H., & Li, J. (2023). Genetic modification of Pichia kudriavzevii to enhance thermotolerance for industrial fermentation processes. Fungal Biology Biotechnology, 10(1), 1-10. 6.
8. Yang, L., Wang, J., & Li, X. (2024). Investigation of the biochemical properties of Pichia kluveri for improved fermentation efficiency. Biotechnology Advances, 45, 107675.
9. Ling, L., Tu, Y., Ma, W., Feng, S., Yang, C., Zhao, Y., ... & Zhang, J. (2020). A potentially important resource: endophytic yeasts. World journal of microbiology and biotechnology, 36(8), 110.
Copyright (c) 2026 «ACTA NUUz»
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
.jpg)
1.png)
