The major viral diseases that occur on rice plants in Zhejiang Province, eastern China, are stripe and rice black-streaked dwarf diseases. Rice stripe disease is only caused by rice stripe tenuivirus （RSV）, while ri...The major viral diseases that occur on rice plants in Zhejiang Province, eastern China, are stripe and rice black-streaked dwarf diseases. Rice stripe disease is only caused by rice stripe tenuivirus （RSV）, while rice black-streaked dwarf disease can be caused by rice black-streaked dwarf fijivirus （RBSDV） and/or southem rice black-streaked dwarf fijivirus （SRBSDV）. Here we review the characterization of these viruses, methods for their detection, and extensive surveys showing their occurrence and spread in the province.展开更多
Wheat seeds of 109 cultivars from USA, Europe and Japan were sown in experiments at seven sites in different provinces of China for one or two seasons. Five of the sites were infested with the bymovirus wheat yellow m...Wheat seeds of 109 cultivars from USA, Europe and Japan were sown in experiments at seven sites in different provinces of China for one or two seasons. Five of the sites were infested with the bymovirus wheat yellow mosaic virus (WYMV) and two jointly with WYMV and the furovirus Chinese wheat mosaic virus (CWMV). Disease symptoms were assessed visually and leaf samples were tested for virus (es) by ELISA. At least 29 cultivars were resistant to WYMV at the sites where only this virus was present but all the cultivars were severely infected at Rongcheng (Shandong Province) where CWMV was mixed with WYMV. There was evidence that the presence of CWMV assisted infection by WYMV and also resulted in more severe symptoms. At the mixed site in Yantai, Shandong Province, symptoms were mild and many cultivars had symptomless infection . Of the two strains of WYMV identified in Japan, the Chinese sites seem to be most similar to the type isolated, WYMV-T. Eleven cultivars seemed to be susceptible to WYMV only at Loutian (Hubei Province),suggesting that the virus at this site would be worth studying further.展开更多
基金funded by the National Science and Technology Support Program of China (Grant No. 2012BAD19B03)the China 863 and 973 Program (Grant Nos. 2007AA10Z414 and 2010CB126203)+3 种基金the International Science and Technology Cooperation Project (Grant No. 2007DFB30350)the Special Fund for Agro-Scientific Research in the Public Interest of China (Grant No. 201003031)the Zhejiang Provincial Science and Technology Project (Grant No. 2010C12027)the Zhejiang Provincial Foundation for Natural Science (Grant Nos. Z305165 and Y3090657)
文摘The major viral diseases that occur on rice plants in Zhejiang Province, eastern China, are stripe and rice black-streaked dwarf diseases. Rice stripe disease is only caused by rice stripe tenuivirus （RSV）, while rice black-streaked dwarf disease can be caused by rice black-streaked dwarf fijivirus （RBSDV） and/or southem rice black-streaked dwarf fijivirus （SRBSDV）. Here we review the characterization of these viruses, methods for their detection, and extensive surveys showing their occurrence and spread in the province.
基金the Zhejiang Foun-dation of Natural Sciences(RC9604)National Natural Science Foundation of China(39970482)+3 种基金the Commission of European Union(INCO C118 CT96-0049)a special grant for Zhejiang Provincial KeyLaboratory(001107557) Zhejiang Provincial KeyResearch Programme(2001-2005)(011102181)I-ACR receives grant-aided support from the Biotech-nology and Biological Sciences Research Council of the United Kingdom.
文摘Wheat seeds of 109 cultivars from USA, Europe and Japan were sown in experiments at seven sites in different provinces of China for one or two seasons. Five of the sites were infested with the bymovirus wheat yellow mosaic virus (WYMV) and two jointly with WYMV and the furovirus Chinese wheat mosaic virus (CWMV). Disease symptoms were assessed visually and leaf samples were tested for virus (es) by ELISA. At least 29 cultivars were resistant to WYMV at the sites where only this virus was present but all the cultivars were severely infected at Rongcheng (Shandong Province) where CWMV was mixed with WYMV. There was evidence that the presence of CWMV assisted infection by WYMV and also resulted in more severe symptoms. At the mixed site in Yantai, Shandong Province, symptoms were mild and many cultivars had symptomless infection . Of the two strains of WYMV identified in Japan, the Chinese sites seem to be most similar to the type isolated, WYMV-T. Eleven cultivars seemed to be susceptible to WYMV only at Loutian (Hubei Province),suggesting that the virus at this site would be worth studying further.
