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Comprehensive Profiling of Alternative Splicing and Alternative Polyadenylation during Fruit Ripening in Watermelon (Citrullus lanatus)

文献类型： 外文期刊

作者： Yu, Yongtao 1 ; Liufu, Yuxiang 2 ; Ren, Yi 1 ; Zhang, Jie 1 ; Li, Maoying 1 ; Tian, Shouwei 1 ; Wang, Jinfang 1 ; Liao, Shengjin 1 ; Gong, Guoyi 1 ; Zhang, Haiying 1 ; Guo, Shaogui 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Key Lab Biol & Genet Improvement Hort Crops North, Beijing Key Lab Vegetable Germplasm Improvement, Natl Watermelon & Melon Improvement Ctr,Natl Engn, Beijing 100097, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Forestry, Basic Forestry & Prote Res Ctr, Fuzhou 350002, Peoples R China

关键词： watermelon; alternative splicing; alternative polyadenylation; lncRNA; fruit ripening

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2023 年 24 卷 20 期

页码：

收录情况： SCI

摘要： Fruit ripening is a highly complicated process that is accompanied by the formation of fruit quality. In recent years, a series of studies have demonstrated post-transcriptional control play important roles in fruit ripening and fruit quality formation. Till now, the post-transcriptional mechanisms for watermelon fruit ripening have not been comprehensively studied. In this study, we conducted PacBio single-molecule long-read sequencing to identify genome-wide alternative splicing (AS), alternative polyadenylation (APA) and long non-coding RNAs (lncRNAs) in watermelon fruit. In total, 6,921,295 error-corrected and mapped full-length non-chimeric (FLNC) reads were obtained. Notably, more than 42,285 distinct splicing isoforms were derived from 5,891,183 intron-containing full-length FLNC reads, including a large number of AS events associated with fruit ripening. In addition, we characterized 21,506 polyadenylation sites from 11,611 genes, 8703 of which have APA sites. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that fructose and mannose metabolism, starch and sucrose metabolism and carotenoid biosynthesis were both enriched in genes undergoing AS and APA. These results suggest that post-transcriptional regulation might potentially have a key role in regulation of fruit ripening in watermelon. Taken together, our comprehensive PacBio long-read sequencing results offer a valuable resource for watermelon research, and provide new insights into the molecular mechanisms underlying the complex regulatory networks of watermelon fruit ripening.

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