GmMYB15 positively regulates soybean immunity to cyst nematode
The soybean cyst nematode,a major threat to soybean roots,is widely distributed in soybean growing areas and restricts the development of the soybean industry in China.Planting disease-resistant varieties is the most economically effective and environment-friendly control strategy for this disease.However,there are currently few commercially available resistance resources.Understanding the molecular mechanism of soybean resistant to cyst nematode is essential for exploring soybean resistance gene resources and advancing molecular breeding for nematode resistance.Based on biochemical experiments and phenotypic analysis,we found that the R2R3-MYB transcription factor GmMYB15 is expressed in both the cytoplasm and nucleus,with its increased transcription level under cyst nematode infection.GmMYB15 interacts with various proteins,such as caffeoyl coenzyme A O-methyltransferase(CCoAOMT),cinnamate-4-hydroxylase(C4H),and cinnamoyl coenzyme A reductase(CCR),and plays a positive role in soybean nematode resistance.Our findings lay a foundation for in-depth researches on the function of GmMYB15 in regulating soybean nematode resistance.
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