Related Experiment Video
Updated: Jul 6, 2026

Agroinfiltration and PVX Agroinfection in Potato and Nicotiana benthamiana
Published on: January 3, 2014
Natural allelic variations in IbJAZ10-IbNF-YA3 complex regulate Rhizopus soft rot resistance in sweet potato
Wenbin Wang1,2, Zhen Wang3, Yuan Wei1
1Key Laboratory of Sweetpotato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis and Utilization, Frontiers Science Center for Molecular Design Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing, 100193, China.
Abstract:
Sweet potato is a globally important root and tuber crop. Soft rot severely threatens its postharvest quality and market value. However, research on the pathogenic mechanisms of soft rot remains limited. Here, we isolated a highly virulent fungal strain, Rhizopus stolonifer MY03, and identified one single nucleotide polymorphism within the promoter region of JASMONATE-ZIM domain protein 10 (IbJAZ10) linked to soft rot resistance. In susceptible varieties, the expression of IbJAZ10Hap2 was significantly upregulated. Overexpression of IbJAZ10 enhanced susceptibility to soft rot. IbJAZ10 interacts with NUCLEAR FACTOR-Y protein 3 (IbNF-YA3). The high dosage Pro::IbNF-YA3Hap1 allele led to a substantial increase in IbNF-YA3 expression, which conferred resistance to soft rot and improved yield by > 9.7%. Moreover, a MY03-specific effector RsSUN41 hijacks IbJAZ10 to degrade IbNF-YA3, thereby inhibiting multiple defense pathways. Our findings provide insights into Rhizopus pathogenicity and establish a genetic basis for soft rot research as well as the development of disease-resistant crops.
Related Concept Videos
Microbes in Food Production
Microbes in the Production of Fermented Foods
Microbial Spoilage of Food
Bioreactor Controls-III
Production of Organic Acids
Microbiota Modulation by Antibiotics

