Transcriptome analysis reveals mechanism of early ripening in Kyoho grape with hydrogen peroxide treatment

BMC Genomics

Yi-He Yu¹  Mao-Song Pei¹  Da-Long Guo¹  Zhen-Guang Wang¹  Li-Li Guo² 

[1] College of Forestry, Henan University of Science and Technology, 471023, Luoyang, Henan Province, China;Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, 471023, Luoyang, Henan Province, China;Henan Engineering Technology Research Center of Quality Regulation and Controlling of Horticultural Plants, 471023, Luoyang, Henan Province, China;

关键词: Early ripening;    Grape;    Kyoho;    Hydrogen peroxide;    RNA sequencing;   

DOI  :  10.1186/s12864-020-07180-y

来源: Springer

【 摘 要 】

BackgroundIn a previous study, the early ripening of Kyoho grape following H2O2 treatment was explored at the physiological level, but the mechanism by which H2O2 promotes ripening at the molecular level is unclear. To reveal the molecular mechanism, RNA-sequencing analysis was conducted on the different developmental stages of Kyoho berry treated with H2O2.ResultsIn the comparison of treatment and control groups, 406 genes were up-regulated and 683 were down-regulated. Time course sequencing (TCseq) analysis showed that the expression patterns of most of the genes were similar between the treatment and control, except for some genes related to chlorophyll binding and photosynthesis. Differential expression analysis and the weighted gene co-expression network were used to screen significantly differentially expressed genes and hub genes associated with oxidative stress (heat shock protein, HSP), cell wall deacetylation (GDSL esterase/lipase, GDSL), cell wall degradation (xyloglucan endotransglucosylase/ hydrolase, XTH), and photosynthesis (chlorophyll a-b binding protein, CAB1). Gene expression was verified with RT-qPCR, and the results were largely consistent with those of RNA sequencing.ConclusionsThe RNA-sequencing analysis indicated that H2O2 treatment promoted the early ripening of Kyoho berry by affecting the expression levels of HSP, GDSL, XTH, and CAB1 and- photosynthesis- pathways.

【 授权许可】

CC BY