Transcriptome Analysis Reveals Critical Genes Involved in the Response of Stropharia rugosoannulata to High Temperature and Drought Stress

TL;DR

This study identifies genes in Stropharia rugosoannulata that help it respond to high temperature and drought stress.

Contribution

The study discovers critical genes and metabolic pathways involved in stress response in Stropharia rugosoannulata.

Findings

10,248 differentially expressed genes were identified under high temperature and drought stress.

15 candidate genes were found to respond to high-temperature or drought stress.

qRT-PCR validation confirmed consistency with transcriptome data.

Abstract

In this study, the differences in gene expression of Stropharia rugosoannulata at different treatment times under high temperature and drought stress were analyzed by transcriptomics. Here, a total of 74,571 transcripts and 16,233 unigenes were identified, with an average assembly length of 3002 bp. A total of 10,248 differentially expressed genes (DEGs) were identified. DEG analysis indicated that the numbers of DEGs under high-temperature stress for 1 d, 2 d, and 3 d were 798, 851, and 1484, respectively. These DEGs were involved in 96 GO functional categories and 69 KEGG metabolic pathways. Meanwhile, the numbers of DEGs under drought stress for 3 d, 6 d, and 9 d were 421, 1072, and 2880, respectively. These DEGs were involved in 108 GO functional categories and 78 KEGG metabolic pathways. Further analysis of the metabolic pathway (ko04011) commonly enriched by DEGs identified 15 candidate genes responding to high-temperature or drought stress. Eight candidate genes were randomly selected for qRT-PCR verification, and the qRT-PCR results were basically consistent with the transcriptome datasets. These findings provide critical candidate genes for understanding the molecular regulation mechanism of S. rugosoannulata in response to high temperature and drought stress and have important reference value for its stress resistance breeding.

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