title: Low Temperature Storage of Southern Rice Black-Streaked Dwarf Virus-Infected Rice Plants Cannot Sustain Virus Transmission by the Vector.
abstract: Southern rice black-streaked dwarf virus (SRBSDV) is a novel virus transmitted by white-backed planthopper Sogatella furcifera (Hováth) (Hemiptera: Delphacidae). Due to low virus transmission efficiency by the planthopper, researchers are frequently confronted with shortage of viruliferous vectors or infected rice plants, especially in winter and the following spring. To find new ways to maintain virus-infected materials, viral rice plants were stored at -80°C for 45 or 140 d and evaluated as virus sources in virus transmission by the vector. SRBSDV virions were not degraded during storage at -80°C as indicated by reverse transcription-polymerase chain reaction and reverse transcription real-time PCR detection. The planthopper nymphs fed on the infected thawed plants for 48 h survived at about 40% and showed positive detection of SRBSDV, but they lost the virus after feeding for another 20 d (the circulative transmission period) on noninfected plants. Transmission electron microscope images indicated broken capsid of virions in infected thawed leaves in contrast to integrity capsid of virions in infected fresh leaves. These results show that low temperature storage of SRBSDV-infected rice plants cannot sustain virus transmission by white-backed planthopper.
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410124, China (dan_feng@126.com; lipei1019@126.com; hanyongqiang1984@163.com; leiwenbin@gmail.com; mlhou@ippcaas.cn) and mlhou@ippcaas.cn.
authors.forename: Danfeng
authors.initials: D
authors.lastname: Liu
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410124, China (dan_feng@126.com; lipei1019@126.com; hanyongqiang1984@163.com; leiwenbin@gmail.com; mlhou@ippcaas.cn) and.
authors.forename: Pei
authors.initials: P
authors.lastname: Li
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410124, China (dan_feng@126.com; lipei1019@126.com; hanyongqiang1984@163.com; leiwenbin@gmail.com; mlhou@ippcaas.cn) and.
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Han
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410124, China (dan_feng@126.com; lipei1019@126.com; hanyongqiang1984@163.com; leiwenbin@gmail.com; mlhou@ippcaas.cn) and.
authors.forename: Wenbin
authors.initials: W
authors.lastname: Lei
authors.affiliation: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410124, China (dan_feng@126.com; lipei1019@126.com; hanyongqiang1984@163.com; leiwenbin@gmail.com; mlhou@ippcaas.cn) and mlhou@ippcaas.cn.
authors.forename: Maolin
authors.initials: M
authors.lastname: Hou
mesh_terms: D000818:Animals; D003080:Cold Temperature; D006430:Hemiptera / Q000254:growth & development / Q000821:virology*; D009758:Nymph / Q000254:growth & development / Q000821:virology; D012275:Oryza / Q000821:virology*; D010935:Plant Diseases / Q000821:virology*; D012087:Reoviridae / Q000502:physiology*
keywords: low temperature storage; rice; southern rice black-streaked dwarf virus; virus acquisition; white-backed planthopper