Transcriptome and carotenoid profiling of different varieties of Coffea arabica provides insights into fruit color formation
文献类型： 外文期刊
作者： Hu, Faguang 1 ; Bi, Xiaofei 1 ; Liu, Hongming 1 ; Fu, Xingfei 1 ; Li, Yanan 1 ; Yang, Yang 1 ; Zhang, Xiaofang 1 ; Wu, Ruirui 1 ; Li, Guiping 1 ; Lv, Yulan 1 ; Huang, Jiaxiong 1 ; Luo, Xinping 1 ; Shi, Rui 2 ;
作者机构： 1.Yunnan Acad Agr Sci, Inst Trop & Subtrop Cash Crops, Kunming, Yunnan, Peoples R China
2.Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sou, Minist Educ, Kunming, Yunnan, Peoples R China
关键词： Coffee; Carotenoids; Anthocyanins; Transcription factors; Functional enrichment
期刊名称：PLANT DIVERSITY （ 影响因子：3.359； ）
ISSN： 2096-2703
年卷期： 2022 年 44 卷 3 期
页码：
收录情况： SCI
摘要： The processability and ultimate quality of coffee (Coffea arabica) are determined by the composition of the matured fruits. The basis of genetic variation in coffee fruit quality could be explained by studying color formation during fruit maturation. Transcriptome profiling was conducted on matured fruits of four C. arabica varieties (orange colored fruits (ORF); purple colored fruits (PF); red colored fruits (RF) and yellow colored fruits (YF)) to identify key color-regulating genes, biosynthesis pathways and transcription factors implicated in fruit color formation. A total of 39,938 genes were identified in the transcriptomes of the four C. arabica varieties. In all, 2745, 781 and 1224 differentially expressed genes (DEGs) were detected in YF_vs_PF, YF_vs_RF and YF_vs_ORF, respectively, with 1732 DEGs conserved among the three pairwise groups. Functional annotation of the DEGs led to the detection of 28 and 82 key genes involved in the biosynthesis of carotenoids and anthocyanins, respectively. Key transcription factors bHLH, MYB, NAC, MADS, and WRKY implicated in fruit color regulation were detected. The high expression levels of gene-LOC113688784 (PSY), gene-LOC113730013 (beta-CHY), gene-LOC113728842 (CCD7), gene-LOC113689681 (NCED) and gene-LOC113729473 (ABA2) in YF may have accounted for the yellow coloration. The differential expression of several anthocyanin and carotenoid-specific genes in the fruits substantially account for the purple (PF), red (RF), and orange (ORF) colorations. This study provides important insights into fruit color formation and variations in C. arabica and will help to develop coffee varieties with specific color and quality traits. Copyright (C) 2022 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.
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