Acta Agriculturae Boreali-Sinica ›› 2025, Vol. 40 ›› Issue (4): 57-64. doi: 10.7668/hbnxb.20195741

Special Issue: Oil crops Plant protection Biotechnology

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Cloning and Functional Analysis of Candidate Gene for SMV Resistance Locus qTsmv-3 in Soybean

LIN Jing, SHI Xiaolei, XU Junjie, YU Cuihong, CAO Zhimin, TANG Xiaodong, YANG Chunyan , ZHANG Mengchen, YAN Long   

  1. Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang Branch Center of National Center for Soybean Improvement,Huang-Huai-Hai Key Laboratory of Biology and Genetic Improvement of Soybean,Ministry of Agriculture and Rural Affairs, Hebei Key Laboratory of Crop Genetics and Breeding,Shijiazhuang 050035,China
  • Received:2025-01-07 Published:2025-08-28

Abstract:

Soybean mosaic virus(SMV)disease can cause significant yield losses and quality deterioration in soybeans,and breeding resistant cultivars remains the only effective strategy for SMV control.Identifying the functional genes associated with SMV resistance provides essential genetic resources for developing resistant varieties.Six MATE candidate genes involved in SMV resistance were identified using a near-isogenic line(NIL)of the qTsmv-3 locus and a transgenic Arabidopsis thaliana plant.A total of 128 MATE family genes were predicted in the soybean genome,which were classified into five subfamilies.Notably,all six MATE candidate genes located at the qTsmv-3 locus clustered within subfamily Ⅰ,exhibiting significant differences in expression levels and tissue specificity based on public data.Among them,Glyma.03G005600 showed the highest expression in aerial tissues(leaves and stems),while Glyma.03G005800 was predominantly expressed in underground tissues(roots and nodules).Following SMV inoculation,the resistant NIL(#NIL-NC)exhibited a 70% reduction in viral accumulation compared with the susceptible line(#NIL-SMC).Concurrently,the expression levels of GmICS1 and GmPR1,key genes in the salicylic acid(SA)-mediated defense pathway,were upregulated by 2.40,15.16 folds,respectively,in #NIL-NC,indicating that qTsmv-3 confers resistance through SA-dependent signaling.Among the 6 MATE candidate genes,only Glyma.03G005300 and Glyma.03G005600 displayed significant differential expression between NILs,which were down-regulated by 61.0% and 82.1%,respectively.Considering their expression patterns and responses to SMV infection,Glyma.03G005600 was identified as the most promising candidate gene for qTsmv-3.Further,the expression of GmICS1 and GmPR1 in transgenic Arabidopsis thaliana(OE_MATE),which carrying Glyma.03G005600,was significantly up-regulated by 4.22,9.12 folds compared with that of wild type(WT)after UV-B stress.These results strongly indicated that Glyma.03G005600 could significantly enhance or affect the expression of genes in salicylic acid signaling pathway,and preliminarily confirmed that Glyma.03G005600 was a key regulatory gene for qTsmv-3 locus.In all,the results laid a foundation for cloning the key genes regulating SMV resistance and provided gene resources for genetic improvement of SMV resistance in soybean.

Key words: Soybean mosaic virus, Resistance candidate gene, MATE, qTsmv-3, Function analysis

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Cite this article

LIN Jing, SHI Xiaolei, XU Junjie, YU Cuihong, CAO Zhimin, TANG Xiaodong, YANG Chunyan, ZHANG Mengchen, YAN Long. Cloning and Functional Analysis of Candidate Gene for SMV Resistance Locus qTsmv-3 in Soybean[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(4): 57-64. doi: 10.7668/hbnxb.20195741.

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