Identification of regulatory candidate genes for Lentinula edodes pileus development based on transcriptome analysis

Area of Science:

• * Mycology and Molecular Biology
• * Fungal Development and Genetics

Background:

• * The pileus (mushroom cap) significantly influences the market grade and commercial value of Lentinula edodes.
• * Understanding pileus development is crucial for optimizing mushroom cultivation and quality.

Purpose of the Study:

• * To elucidate the molecular mechanisms governing pileus morphogenesis in Lentinula edodes.
• * To identify key regulatory genes involved in mushroom cap development.

Main Methods:

• * Comparative transcriptome analysis using RNA sequencing across three developmental stages: early button, young fruiting body, and mature fruiting body.
• * Differential gene expression profiling to identify conserved differentially expressed genes (DEGs).
• * Quantitative PCR for validation and enzymatic activity assays.

Main Results:

• * Identified 283 conserved differentially expressed genes (DEGs) across developmental stages.
• * Pinpointed three candidate regulatory genes: Alpha-amylase, Heat shock protein 70 (HSP70), and Phosphatidylserine decarboxylase.
• * Observed significant stage-specific variations in antioxidant enzyme activities and membrane lipid peroxidation.

Conclusions:

• * The study provides critical insights into the molecular framework of Lentinula edodes pileus development.
• * Identified candidate genes offer potential targets for future research in mushroom breeding and quality improvement.