ArticlePlanta2026
Transgenic overexpression of GmAPC7-CT improves seed yield and reduces susceptibility to soybean mosaic virus and Meloidogyne incognita in soybean.
Article in Planta, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
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conclusionStable transgenic soybean lines overexpressing the GmAPC7-CT gene have demonstrated increased seed yield and reduced susceptibility to the soybean mosaic virus and Meloidogyne incognita. The Anaphase-Promoting Complex subunit 7 (APC7) is a core structural component of the anaphase-promoting complex or cyclosome (APC/C). The terminal region of this AtAPC7 gene has been shown in Arabidopsis thaliana to accumulate more transcripts than the full-length gene. The AtAPC7-CT gene (terminal region of the AtAPC7) encodes a protein with significant homology to a tobacco viral replication inhibitor (IVR). Its stable overexpression in transgenic A. thaliana lines resulted in notable improvements in biomass, seed yield, earliness of vegetative-reproductive transitions, and reduced susceptibility to viruses. In this study, we generated stable transgenic soybean lines overexpressing the GmAPC7-CT gene (terminal region or 3' portion of Glyma.15G096000, corresponding to the AtAPC7-CT) and evaluated seed yield and susceptibility of these lines to soybean mosaic virus and Meloidogyne incognita. The GmAPC7-CT gene is 624 nucleotides long and encodes a 207-amino acid protein with two tetratricopeptide repeat (TPR) domains. GmAPC7-CT showed 100% amino acid identity with full-length GmAPC7, 81.16% identity with AtAPC7-CT, and 87.94% identity with tobacco IVR. Stable transgenic lines demonstrated significant advancements in plant development and seed yield, with the top three lines producing up to 43% more pods, 44% more seeds, and a 16% increase in seed weight. Furthermore, these soybean lines showed up to a 70% reduction in susceptibility to soybean mosaic virus and M. incognita, reflected by decreased viral RNA load and nematode reproduction factor. Collectively, these results support a conserved role of GmAPC7-CT in soybean and AtAPC7-CT in A. thaliana, acting similarly to the tobacco IVR. Thus, our findings underscore the strong biotechnological potential of the GmAPC7-CT gene to improve key agronomic traits in soybean through genetic engineering approaches, including conventional breeding, transgenesis, and genome editing.
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