Transcriptome analysis reveals the mechanisms involved in the enhanced biocontrol efficacy of Rhodotorula mucilaginosa induced by chitosan

The biocontrol efficacy of Rhodotorula mucilaginosa against postharvest diseases of strawberries can be significantly enhanced by chitosan-inducing incubation. But the molecular mechanisms involved in the enhanced biocontrol efficacy of R. mucilaginosa was not explored comprehensively. In recent years, the rise of transcriptome has provided favorable conditions for the exploration of the molecular mechanisms in various fields. From the transcriptome and bioinformatics analysis, the expression of some DEGs related to growth and reproduction, adhesion, antioxidant capacity of R. mucilaginosa were up-regulated. These results provided a theoretical reference for further study of the molecular mechanisms involved in enhancing biocontrol efficacy of antagonistic yeast incubated with elicitor molecule and would provide a theoretical basis to accelerate the application process of antagonistic yeast.

黏红酵母（Rhodotorula mucilaginosa）对草莓采后病害的生物防治效力，可通过壳聚糖诱导孵育实现显著提升。但目前尚未全面阐明该菌生物防治效力提升背后的分子机制。近年来，转录组学技术的兴起为各领域分子机制的探究提供了有利条件。本研究通过转录组与生物信息学分析发现，黏红酵母中部分与生长繁殖、黏附能力及抗氧化能力相关的差异表达基因（Differentially Expressed Genes，DEGs）的表达量呈上调趋势。上述研究结果可为解析经激发子分子孵育的拮抗酵母提升生物防治效力的分子机制提供理论参考，同时也为加速拮抗酵母的产业化应用进程奠定了坚实的理论基础。