A global view of transcriptome dynamics during flower development in Capsicum annuum L.

生物 转录组 胡椒粉 基因 MYB公司 遗传学 雄蕊 基因表达谱 拟南芥 转录因子 巴德 基因表达 植物 园艺 花粉 突变体
作者
Bi‐Yu Tang,Huanming Yang,Xinhao Zhang,Jianjun Du,Lingling Xie,Xiongze Dai,Xuexiao Zou,Feng Liu
出处
期刊:Horticultural Plant Journal [Elsevier]
卷期号:9 (5): 999-1012 被引量:1
标识
DOI:10.1016/j.hpj.2022.12.015
摘要

An analysis of genome-wide gene expression profiles during floral organ development can provide important clues about the molecular basis of gene functions and developmental processes. In this study, we analyzed the transcriptome data of 36 samples obtained during floral organ development from pepper ‘6421’ and detected 30 016 genes that were expressed in at least one sample. K-means clustering analysis was used to classify the data into 16 clusters based on the similarities between the dynamic expression profiles of genes. Of these, 15 clusters exhibited notable up-regulation or down-regulation trends in different developmental stages or tissues of floral organs. We identified transcription factors expressed at the early, medium, and late stages of bud development (F1, F5, F9). Transcription factor families such as AP2-ERF, MADS-box, MYB, bHLH, and NAC showed significant levels of enrichment. In comparison with genes expressed in vegetative tissues at different stages, certain genes were specifically up-regulated during flower development; among these, the number of genes specifically up-regulated during the stamen (Sta10) and bud tetrad development (F4) stages was the highest. Through extensive studies of the ABCDE model of flower development in Arabidopsis, we identified 17 ABCDE model candidate genes in pepper, most of which were up-regulated at specific stages of flower bud development. The expression data provided in this study is the most comprehensive dataset available for pepper to date and will serve as a resource for identifying the functions of many specific genes involved in flower development in pepper and other Solanaceae plants.
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