Genome-wide investigation of sucrose synthase gene family in pineapple: Characterization and expression profile analysis during fruit development
文献类型： 外文期刊
作者： Wu, Jianyang 1 ; Chen, Mei 2 ; Yao, Yanli 2 ; Zhang, Xiumei 2 ;
作者机构： 1.Zhanjiang Presch Educ Coll, Dept Sci Educ, Zhanjiang, Peoples R China
2.Chinese Acad Trop Agr Sci, South Subtrop Crop Res Inst, Key Lab Trop Fruit Biol, Minist Agr & Rural Affairs, Zhanjiang, Guangdong, Peoples R China
3.Natl Key Lab Trop Crop Breeding, Sanya, Peoples R China
4.Key Lab Hainan Prov Trop Crops Nutr, Zhanjiang, Guangdong, Peoples R China
5.Chinese Acad Trop Agr Sci, South Subtrop Crop Res Inst, Key Lab Trop Fruit Biol, Minist Agr & Rural Affairs, 1 Huxiu Rd, Zhanjiang 524091, Guangdong, Peoples R China
关键词： Pineapple (Ananas comosus); sucrose content; sucrose synthase; enzyme activity; gene family; gene expression
期刊名称：JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY （ 影响因子：1.9； 五年影响因子：1.9 ）
ISSN： 1462-0316
年卷期： 2024 年
页码：
收录情况： SCI
摘要： Sucrose content influences the flavour and quality of fruits. Sucrose synthase (SUS; EC 2.4.1.13) mediates the reversible conversion of uridine diphosphate and sucrose to uridine diphosphate-glucose and fructose. Although genome-wide analyses of SUS gene families exist for various species, such studies are lacking for pineapple. The specific SUS gene(s) involved in sucrose metabolism during pineapple development remain unknown. This study identified six SUS genes (AcSUS1-6) and analysed their chromosomal locations, synteny, structure, motif composition, sequence alignments, and phylogenetic relationships. Gene promoter analysis revealed a predominance of light-response elements in the AcSUS gene family. AcSUS1 was predominantly expressed in the peduncle, pericarp, and core, whereas AcSUS4 was highly expressed in the flesh. The levels of sucrose, glucose, and fructose increase during pineapple fruit development. Further gene expression analysis indicated that AcSUS2, AcSUS3, and AcSUS5 were down-regulated during this period. These results suggest that AcSUS2, AcSUS3, and AcSUS5 may modulate sucrose breakdown in pineapple. This study contributes to our understanding of SUS gene function in regulating sucrose metabolism and offers valuable theoretical guidance for the genetic improvement of pineapples.
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