Genome-Wide Identification and Expression Analysis of the Fructose-1,6-Bisphosphate Aldolase (FBA) Gene Family in Sweet Potato and Its Two Diploid Relatives

文献类型： 外文期刊

第一作者： Jiang, Zhicheng

作者： Jiang, Zhicheng;Du, Taifeng;Zhou, Yuanyuan;Qin, Zhen;Li, Aixian;Wang, Qingmei;Zhang, Liming;Hou, Fuyun

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关键词： sweet potato; Ipomoea trifida; Ipomoea triloba; Fructose-1,6-bisphosphate aldolase; storage root development; starch biosynthesis; abiotic stress; hormone crosstalk

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）

ISSN： 1661-6596

年卷期： 2025 年 26 卷 15 期

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收录情况： SCI

摘要： Fructose-1,6-bisphosphate aldolase (FBA; EC 4.1.2.13) is a key enzyme in glycolysis and the Calvin cycle, which plays crucial roles in carbon allocation and plant growth. The FBA family genes (FBA s) have been identified in several plants. However, their presence and roles in sweet potato remain unexplored. In this study, a total of 20 FBAs were identified in sweet potato and its wild wild diploidrelatives, including seven in sweet potato (Ipomoea batatas, 2n = 6x = 90), seven in I. trifida (2n = 2x = 30), and six in I. triloba (2n = 2x = 30). Their protein physicochemical properties, chromosomal localization, phylogenetic relationship, gene structure, promoter cis-elements, and expression patterns were systematically analyzed. The conserved genes and protein structures suggest a high degree of functional conservation among FBA genes. IbFBAs may participate in storage root development and starch biosynthesis, especially IbFBA1 and IbFBA6, which warrant further investigation as candidate genes. Additionally, the FBAs could respond to drought and salt stress. They are also implicated in hormone crosstalk, particularly with ABA and GA. This work provides valuable insights into the structure and function of FBAs and identifies candidate genes for improving yield, starch content, and abiotic stress tolerance in sweet potatoes.

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