EPG Recordings Reveal Differential Feeding Behaviors in Sogatella furcifera in Response to Plant Virus Infection and Transmission Success.
EPG Recordings Reveal Differential Feeding Behaviors in Sogatella furcifera in Response to Plant Virus Infection and Transmission Success.
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EPG 记录揭示白背飞虱响应植物病毒感染和传播成功的不同摄食行为
DOI：
10.1038/srep30240
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发表时间：
2016-08-05
影响因子：
4.6
通讯作者：
Hou M
中科院分区：
文献类型：
--
作者：
Lei W;Li P;Han Y;Gong S;Yang L;Hou M
植物病毒主要通过昆虫媒介传播，病毒感染会影响媒介的取食行为。利用电渗透图，我们检测到南方水稻黑条矮缩病毒（SRBSDV）在白背飞虱（WBPH）和水稻植株上的感染都改变了媒介的摄食行为。当携带SRBSDV的带毒WBPH以未感染的植物为食时，它们在唾液分泌和韧皮部汁液摄取上花费的时间比不带毒昆虫多。与未侵染的植株相比，侵染植株对非毒性白僵菌的韧皮部汁液摄取表现出抑制作用。接种或获得SRBSDV和未接种或获得SRBSDV的白头海象之间也存在摄食行为差异。与未接种SRBSDV的WBPH相比，接种SRBSDV的WBPH表现出更多的探测次数、唾液分泌事件和韧皮部汁液摄取事件，且唾液分泌时间更长。获得SRBSDV的WBPH比没有获得SRBSDV的WBPH更快到达韧皮部，花更多的时间摄取韧皮部汁液。载体的这些行为改变可能对SRBSDV的传播和成功传播具有适应性优势，因为携带病毒的载体在未感染宿主上分泌更多的唾液会促进病毒接种，而感染宿主上携带非病毒的载体摄入更多的汁液会促进病毒获得。
Plant viruses are primarily transmitted by insect vectors and virus infection may influence on the vectors’ feeding behaviors. Using an electrical penetration graph, we detected that infection with the Southern rice black-streaked dwarf virus (SRBSDV) in the white-backed planthopper (WBPH) and in rice plants both altered the vector’s feeding behavior. When viruliferous WBPH (carrying SRBSDV) were fed on uninfected plants, they spent more time in salivation and phloem sap ingestion than non-viruliferous insects. In comparison with uninfected plants, infected plants showed an arrestant effect on non-viruliferous WBPH for phloem sap ingestion. Differential feeding behaviors were also detected between the WBPH that inoculated or acquired SRBSDV and those that failed to. The WBPH that inoculated SRBSDV exhibited more probing bouts, salivation events and phloem sap ingestion events and longer salivation than those that failed to. The WBPH that acquired SRBSDV were quicker to reach phloem and spent more time in phloem sap ingestion than those that failed to. These behavior alterations in the vector may have adaptive advantages for SRBSDV transmission and spread success because greater salivation by viruliferous vectors on uninfected hosts will promote virus inoculation, whereas more sap ingestion by non-viruliferous vectors on infected hosts will promote virus acquisition.