Natural Variations in Key Maturity Genes Underpin Soybean Cultivars Adaptation Beyond 50° N in Northeast China
文献类型： 外文期刊
作者： Jia, Hongchang 1 ; Sun, Baiquan 2 ; Jiang, Bingjun 2 ; Wang, Peiguo 1 ; Naser, Mahmoud 2 ; Qian, Shuqing 2 ; Wang, Liwei 2 ; Zhang, Lixin 2 ; Sinegovskii, Mikhail 5 ; Sun, Shi 2 ; Lu, Wencheng 3 ; Sinegovskaya, Valentina 5 ; Bai, Jiangping 1 ; Han, Tianfu 1 ;
作者机构： 1.Gansu Agr Univ, Coll Agron, State Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China
2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
3.Heilongjiang Acad Agr Sci, Heihe Branch, Heihe 164399, Peoples R China
4.Chinese Acad Agr Sci, Natl Nanfan Res Inst, Sanya 572000, Peoples R China
5.Russian Acad Sci, Far East Res Inst Agr, Khabarovsk Fed Res Ctr, Far Eastern Branch, Khabarovsk 680521, Russia
关键词： soybean; maturity group; photothermal adaptation; high-latitude cultivation; adaptability; haplotype
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 7 期
页码：
收录情况： SCI
摘要： Expanding soybean planting is vital for food security both in China and globally. The 50 degrees N latitude serves as the northern boundary of major soybean regions. However, enhancing the adaptability of soybean to photothermal conditions enables the potential to extend cultivation to higher latitudes and altitudes. Understanding the genetic basis of super-early maturity of soybean is crucial to achieving this goal. In this study, 438 soybean germplasms collected from high-latitude regions were evaluated in Heihe (HH) (50 degrees 15 ' N, 127 degrees 28 ' E, 154 m), Beijicun (BJC) (53 degrees 28 ' N, 122 degrees 21 ' E, 295 m) and Labudalin (LBDL) (50 degrees 15 ' N, 120 degrees 19 ' E, 577 m). Using resequencing data, we analyzed natural variation and haplotypes in 35 key genes associated with flowering time and maturity. The results showed that the relative maturity groups (RMGs) for BJC, HH, and LBDL were -1.0, 0.0, and -1.2, respectively. Among the 35 genes analyzed, 23 had identical allelic variations, while 12 genes exhibited 19 SNPs and four InDels. Functional mutations were identified in E1, E2, E3, and E4. Notably, all cultivars carried the e1-as allele of E1, which is likely critical for high-latitude adaptation. Additional mutations included a single-base substitution in E2 (16142 A > T) and E3 (5203 C > T), causing premature codon termination, along with frameshift mutations in E4 (3726 and 4099) and E3 (2649). Haplotype analysis revealed significant differences in growth stages among nine gene haplotypes. The higher frequency of early-maturing haplotypes in BJC and LBDL highlights the role of gene accumulation in soybean adaptation. These findings offer valuable insights for improving soybean maturity and expanding its cultivation in high-latitude regions of China.
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