Research Progress on the Occurrence and Control of Soybean Vein Necrosis Disease and Its Transmission Vector Thrips
Soybean vein necrosis disease is an emerging viral disease of soybeans that is widespread in North America and is caused by soybean vein necrosis virus.It has been confirmed in the USA,Canada,and Egypt.Soybean vein necrosis virus is the first tomato spotted wilt virus to cause a disease in soybean.Legumes are the main host plants,and modes of transmission include seed-borne and insect-borne.The transmission vector insects are the soybean thrips Neohydatothrips variabilis,Frankliniella tritici,F.fusca,and other phytophagous thrips,of which N.variabilis has the highest transmission efficiency and is the dominant species in soybean fields in North America.Control of this virus disease relies heavily on effective control of its vector,the thrips.Control techniques include the use of neonicotinoid treatments to reduce thrips population densities,screening for resistant varieties,and the protection and utilisation of the natural enemy insect Orius insidiosus.Although this disease and its vector thrips N.variabilis have not been reported to occur and cause damage in China,the detection of soybean vein necrosis virus in imported US soybeans by Tianjin Customs firstly in 2019 is noteworthy.This paper reviews the progress of research on soybean vein necrosis virus and its vector thrips N.variabilis,and provides reference for research on this plant disease.