期刊
SCIENTIA HORTICULTURAE
卷 305, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scienta.2022.111392
关键词
Pear; Anthocyanin; Transcriptome; Gene expression
类别
资金
- Natural Science Foundation of Shandong Province [ZR2021QC157]
- National Natural Science Foundation of China [31,901,987]
- Shandong Provincial Natural Science Foundation, China [ZR2019BCE037]
This study clarified the mechanism of anthocyanin accumulation in "Red Bartlett" pear through transcriptome analysis, and identified the genes and transcription factors associated with anthocyanin biosynthesis and regulation.
The color of the peel is the most direct reflection of fruit quality, and is also an important factor in attracting consumers. The `Red Bartlett' pear (Pyrus communis L.) is a red bud sport mutant variety of `Bartlett' pear. It was found that the anthocyanin content in branches and pericarps of `Red Bartlett' pears were significantly higher than that of `Bartlett' pears. The present study aimed to clarify the underlying mechanisms of anthocyanin accumulation in `Red Bartlett' using a transcriptome analysis. A weighted gene coexpression network analysis (WGCNA) identified 495 differentially expressed genes positively associated with anthocyanin. Additionally, 12 anthocyanin-related structural genes and 13 transcription factors, including WRKY, ERF, bHLH, ASIL2, and HSF, were identified through screening of 495 DEGs. The expression levels of one UFGT (Pbr014258.1) and one GST (Pbr012649.1) were also upregulated in the pericarps of `Red Bartlett' and `Starkrimson', more so than in `Bartlett' and `Clapps Favourite'. Overall, this study clarified that the red color mutation of `Red Bartlett' was closely linked to increased anthocyanin biosynthesis and transport. This study provided an abundance of valuable information on anthocyanin biosynthesis for future breeding of red-skinned pears.
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