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Identification and validation of qRT-PCR reference genes for analyzing grape infection with gray mold
Lina Tan1, Lijuan Lu2, Wen Sun1
1Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, China.
Background:
Grapes are highly valued for their nutritional and economic benefits, and have been widely studied for their biological attributes such as fruit development, quality formation, and stress resistance. One significant threat to grape quality is gray mold, caused by Botrytis cinerea, which can infect the flowers, fruits, leaves, and stems. The quantitative real-time PCR (qRT-PCR), known for its high sensitivity and quantitative accuracy, is an essential tool for analyzing gene expression related to the pathogenesis of gray mold, thereby providing deeper insights into the disease.
Result:
In this study, we aim to identify stable internal reference genes crucial for accurate gene expression analysis via qRT-PCR. Utilizing transcriptome data from grapes under various disease stresses, we identified twelve candidate reference genes with consistently high expression levels. The stability of these genes was assessed through delta-CT, geNorm, NormFinder, BestKeeper, and RefFinder analyses after establishing the cycling thresholds (Ct) in different grape varieties treated with Botrytis cinerea.
Conclusions:
Our findings reveal that VIT-17s0000g02750 and VIT-06s0004g04280 exhibit stable expression and are suitable as new reference genes. This foundational work supports further research into the molecular mechanisms of grape biological processes.
