Potato virus S （PVS） often causes significant losses in potato production in potato-growing countries. In this study, the ordinary strain of PVS （PVS 0） was purified from PVS-infected potato plants and used as the...Potato virus S （PVS） often causes significant losses in potato production in potato-growing countries. In this study, the ordinary strain of PVS （PVS 0） was purified from PVS-infected potato plants and used as the immunogen to produce hybridomas secreting monoclonal antibodies （MAbs）. Five highly specific and sensitive murine MAbs （1A3, 16C10, 18A9, 20B12, and 22H4） against PVS were prepared using conventional hybridoma technology. Using these MAbs, tissue print-enzyme-linked immunosorbent assay （ELISA）, dot-ELISA, and double-antibody sandwich （DAS）- ELISA were developed for sensitive and specific detection of PVS infection in potato plants. The results of sensitivity assays revealed that PVS could be reliably detected in PVS-infected leaf crude extracts diluted at 1：10240 and 1：163840 （w/v, g/ml）in phosphate buffer saline （PBS） by dot-ELISA and DAS-ELISA, respectively. Twenty-two samples collected from potato fields in Yunnan Province, China were tested for PVS infection using the serological assays we had developed, and 14 of them were found to be positive. This indicates that PVS is now prevalent in potato fields in Yunnan Province.展开更多
基金Project supported by the National Key Research and Development Project of China(No.2017YFD0201604)the Fund for Agroscientific Research in the Public Interest(No.201303028),China
文摘Potato virus S （PVS） often causes significant losses in potato production in potato-growing countries. In this study, the ordinary strain of PVS （PVS 0） was purified from PVS-infected potato plants and used as the immunogen to produce hybridomas secreting monoclonal antibodies （MAbs）. Five highly specific and sensitive murine MAbs （1A3, 16C10, 18A9, 20B12, and 22H4） against PVS were prepared using conventional hybridoma technology. Using these MAbs, tissue print-enzyme-linked immunosorbent assay （ELISA）, dot-ELISA, and double-antibody sandwich （DAS）- ELISA were developed for sensitive and specific detection of PVS infection in potato plants. The results of sensitivity assays revealed that PVS could be reliably detected in PVS-infected leaf crude extracts diluted at 1：10240 and 1：163840 （w/v, g/ml）in phosphate buffer saline （PBS） by dot-ELISA and DAS-ELISA, respectively. Twenty-two samples collected from potato fields in Yunnan Province, China were tested for PVS infection using the serological assays we had developed, and 14 of them were found to be positive. This indicates that PVS is now prevalent in potato fields in Yunnan Province.
