Rice varietal resistance to the vector Sogatella furcifera hinders transmission of Southern rice black‐streaked dwarf virus

• Published in: Pest management science 2024-07, Vol.80 (7), p.3684-3690
• Main Authors: Liu, Dandan, Zhong, Yuqi, Li, Zhengxi, Hou, Maolin
• Format: Article
• Language: English
• Subjects: Animals; Crop production; Disease Resistance; Disease transmission; electrical penetration graph (EPG); Feeding behavior; Hemiptera - physiology; Hemiptera - virology; High resistance; Host plants; Inoculation; Insect Vectors - physiology; Insect Vectors - virology; Oryza - virology; Plant Diseases - virology; Plant viruses; Plant Viruses - physiology; probing behavior; Reoviridae - physiology; Rice; Sogatella furcifera; Southern rice black‐streaked dwarf virus (SRBSDV); Sustainable production; varietal insect resistance; Viral diseases; virus transmission; Viruses
• ISSN: 1526-498X; 1526-4998
• DOI: 10.1002/ps.8072

BACKGROUND The Southern rice black‐streaked dwarf virus (SRBSDV) transmitted by Sogatella furcifera constitutes a threat to sustainable rice production. However, most rice varieties are highly vulnerable to SRBSDV, whereas the occurrence of the viral disease varies significantly under field conditions. This study aimed to evaluate the potential of rice varietal resistance to S. furcifera in reducing SRBSDV transmission. RESULTS Among the five rice varieties, Zhongzheyou8 and Deyou108 exhibited high resistance to S. furcifera, Baixiangnuo33 was susceptible, and TN1 and Diantun502 were highly susceptible. The S. furcifera generally showed non‐preference for and low feeding on the Zhongzheyou8 and Deyou108 plants, which may explain the resistance of these varieties to S. furcifera. Transmission of SRBSDV by S. furcifera was significantly impaired on the resistant varieties, both inoculation and acquisition rates were much lower on Zhongzheyou8 than on TN1. The short durations of S. furcifera salivation and phloem‐related activities and the low S. furcifera feeding amount may explain the reduced SRBSDV inoculation and acquisition rates associated with Zhongzheyou8. Spearman's rank correlation revealed a significant negative correlation between S. furcifera resistance and SRBSDV transmission among the tested varieties. CONCLUSION The results indicate that rice varietal resistance to the vector S. furcifera hinders SRBSDV transmission, which is largely associated with the host plant selection and feeding behaviors of the vector. The current findings shed light on the management of the SRBSDV viral disease through incorporation of S. furcifera resistant rice varieties in the management protocol. © 2024 Society of Chemical Industry. Resistance of rice varieties to the vector Sogatella furcifera hinders transmission of Southern rice black‐streaked dwarf virus, where the former is largely associated with non‐preference for and reduced feeding on resistant varieties, and the latter is connected with shortened salivation and phloem‐related activities in S. furcifera feeding on resistant varieties. The current findings shed light on the management of the SRBSDV viral disease through incorporation of S. furcifera resistant rice varieties in the management protocol.