Yaqin Long , Longxun Ran , Lifei Xia , Hao Qu , Yiping Tian , Linbo Chen , Mingzhi Liang

Tea Research Institute of Yunnan Academy of Agricultural Sciences, Yunnan Engineering Research Center of Tea Germplasm Innovation and Matching Cultivation, Yunnan Provincial Key Laboratory of Tea Science, Menghai, 666201, China
Author    Correspondence author
Journal of Tea Science Research, 2022, Vol. 12, No. 1   doi: 10.5376/jtsr.2022.12.0001
Received: 01 Jun., 2022    Accepted: 12 Jun., 2022    Published: 25 Jun., 2022

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Long Y.Q., Ran L.X., Xia L.F., Qu H., Tian Y.P., Chen L.B., and Liang M.Z., 2022, Gene expression profiling analysis between resistant and susceptible tea cultivars (Exobosidium vexans Massee) in response to tea blister blight, Journal of Tea Science Research, 12(1): 1-12 (doi: 10.5376/jtsr.2022.12.0001)

The resistant and susceptible tea cultivars were selected for revealing the defense response mechanism induced by tea blister blight. The DEGs before and after infection by tea blister blight were analyzed based on RNA sequencing and digital expression spectrum. The results showed a total of 974 DEGs were identified, of which 122 DEGs were co-expressed genes in both resistant and susceptible cultivars, 364 DEGs were specific genes only in blister disease-resistant cultivar, and 488 DEGs were specific genes only in blight disease-susceptible cultivar. The infection of tea blister blight mainly affected the expression levels of key genes involved in metabolic pathways, protein processing in endoplasmic reticulum, biosynthesis of secondary metabolites, plant-pathogen interaction, plant hormone signal transduction, starch and sucrose metabolism, phenylalanine, tyrosine and tryptophan biosynthesis and so on. These DEGs included disease resistance protein gene, hydrolase gene, cell wall reinforcement genes, transcription factor genes, plant hormones and their signal transduction genes, secondary metabolism and oxidase genes, transporter gene and so on. The differential expressions of 6 genes were verified by Real-time quantitative PCR, which showed a general consistency consistent with the results of transcriptome sequencing. This study preliminarily clarified the influence of tea blister blight infection on gene transcription levels in tea plants with this study, which laid a theoretical foundation for researching the molecular mechanism of disease resistance in tea plants.

Tea plant (Camellia sinensis); Tea blister blight; Transcriptome sequencing; Resistance gene