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Genome-Wide Characterization and Haplotype Module Stacking Analysis of the KTI Gene Family in Soybean (Glycine max L. Merr.)

文献类型： 外文期刊

作者： Tian, Huilin 1 ; Zhang, Zhanguo 1 ; Feng, Shaowei 1 ; Song, Jia 1 ; Han, Xue 1 ; Chen, Xin 1 ; Li, Candong 3 ; Liu, Enliang 4 ; Xu, Linli 4 ; Yang, Mingliang 1 ; Chen, Qingshan 1 ; Wu, Xiaoxia 1 ; Qi, Zhaoming 1 ;

作者机构： 1.Northeast Agr Univ, Natl Res Ctr Soybean Engn & Technol, Natl Key Lab Smart Farm Technol & Syst, Harbin 150030, Peoples R China

2.Northeast Agr Univ, Coll Arts & Sci, Harbin 150030, Peoples R China

3.Heilongjiang Acad Agr Sci, Jiamusi Branch Inst, Jiamusi 154005, Peoples R China

4.XinJiang Acad Agr Sci, Grain Crops Inst, Urumqi 830091, Peoples R China

关键词： kunitz trypsin inhibitor; seed storage protein content; paralogous genes; haplotype module stacking; soybean

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 5 期

页码：

收录情况： SCI

摘要： The Kunitz trypsin inhibitor (KTI) gene family encompasses a category of trypsin inhibitors, and the KTI proteins are important components of the 2S storage protein fraction in soybeans. In this study, fifty members of the GmKTI family were identified in the soybean genome, and their physicochemical properties, domain compositions, phylogenetic relationships, gene structures, and expression patterns were comprehensively analyzed to explore their impact on soybean seed protein content. The results revealed significant gene expansion within the GmKTI family in soybean. The gene structures and conserved motifs of GmKTI members exhibited both regularity and diversity, with distinct expression patterns across different soybean tissues. Haplotype analysis identified 7 GmKTI genes significantly associated with seed storage protein content, and the combination of superior haplotypes was found to enhance seed storage protein content. This is crucial for the improvement of soybean varieties and the enhancement of storage protein content. Additionally, the GmKTI family demonstrated evolutionary conservation, with its functions likely linked to light induction, biotic stress, and growth development. This study characterizes the structure, expression, genomic haplotypes, and molecular features of the soybean KTI domain for the first time, providing a foundation for functional analyses of the GmKTI domain in soybean and other plants.

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