Integrated transcriptomic, metabolomic, and functional analyses unravel the mechanism of bagging delaying fruit cracking of pomegranate ( Punica granatum L.)
文献类型： 外文期刊
作者： Wang, Yuying 1 ; Hu, Yaping 2 ; Ren, Hongfang 1 ; Zhao, Xueqing 1 ; Yuan, Zhaohe 1 ;
作者机构： 1.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Subtrop Crops Zhejiang Prov, Key Lab Plant Innovat & Utilizat, Wenzhou 325005, Peoples R China
关键词： Pomegranate; Fruit cracking; Fruit bagging; PgCML23; Cell wall metabolism; Transcriptome; Metabolome
期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）
ISSN： 0308-8146
年卷期： 2024 年 451 卷
页码：
收录情况： SCI
摘要： The economic impact of fruit cracking in pomegranate products is substantial. In this study, we present the inaugural comprehensive analysis of transcriptome and metabolome in the outermost pericarp of pomegranate fruit in bagging conditions. Our investigation revealed a notable upregulation of differentially expressed genes (DEGs) associated with the calcium signaling pathway (76.92%) and xyloglucan endotransglucosylase/hydrolase ( XTH ) genes (87.50%) in the fruit peel of non -cracking fruit under bagging. Metabolomic analysis revealed that multiple phenolics, flavonoids, and tannins were identified in pomegranate. Among these, calmodulin-like 23 ( PgCML23 ) exhibited a significant correlation with triterpenoids and demonstrated a marked upregulation under bagging treatment. The transgenic tomatoes overexpressing PgCML23 exhibited significantly higher cellulose content and xyloglucan endotransglucosylase (XET) enzyme activity in the pericarp at the red ripening stage compared to the wild type. Conversely, water-soluble pectin content, polygalacturonase (PG), and beta -galactosi- dase ( beta -GAL) enzyme activities were significantly lower in the transgenic tomatoes. Importantly, the heterologous expression of PgCML23 led to a substantial reduction in the fruit cracking rate in tomatoes. Our findings highlight the reduction of fruit cracking in bagging conditions through the manipulation of PgCML23 expression.
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