title: Asymmetric Spread of SRBSDV between Rice and Corn Plants by the Vector Sogatella furcifera (Hemiptera: Delphacidae).
abstract: Plant viruses are mostly transmitted by sucking insects via their piercing behaviors, which may differ due to host plant species and their developmental stages. We characterized the transmission of a fijivirus, southern rice black-streaked dwarf virus (SRBSDV), by the planthopper vector Sogatella furcifera Horváth (Hemiptera: Delphacidae), between rice and corn plants of varying developmental stages. SRBSDV was transmitted from infected rice to uninfected corn plants as efficiently as its transmission between rice plants, while was acquired by S. furcifera nymphs at a much lower rate from infected corn plants than from infected rice plants. We also recorded a high mortality of S. furcifera nymphs on corn plants. It is evident that young stages of both the virus donor and recipient plants added to the transmission efficiency of SRBSDV from rice to corn plants. Feeding behaviors of the vector recorded by electrical penetration graph showed that phloem sap ingestion, the behavioral event that is linked with plant virus acquisition, was impaired on corn plants, which accounts for the high mortality of and low virus acquisition by S. furcifera nymphs on corn plants. Our results reveal an asymmetric spread of SRBSDV between its two host plants and the underlying behavioral mechanism, which is of significance for assessing SRBSDV transmission risks and field epidemiology, and for developing integrated management approaches for SRBSDV disease.
authors.affiliation: College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China.|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, 410128, China.
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, 410128, China.
authors.forename: Fei
authors.initials: F
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, 410128, China.
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, 410128, China.
authors.forename: Lang
authors.initials: L
authors.lastname: Yang
authors.affiliation: College of Plant Protection, Hunan Agricultural University, Changsha, 410128, China.
authors.forename: Xiaolan
authors.initials: X
authors.lastname: Liao
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, 410128, China.
authors.forename: Maolin
authors.initials: M
authors.lastname: Hou
mesh_terms: D000818:Animals; D006430:Hemiptera / Q000254:growth & development / Q000821:virology*; D007303:Insect Vectors / Q000254:growth & development / Q000821:virology*; D009758:Nymph / Q000821:virology; D012275:Oryza / Q000254:growth & development* / Q000821:virology; D010935:Plant Diseases / Q000821:virology; D012087:Reoviridae / Q000235:genetics; D003313:Zea mays / Q000254:growth & development* / Q000821:virology