Barley Yellow Dwarf Virus Influences Its Vector's Endosymbionts but Not Its Thermotolerance
文献类型： 外文期刊
作者： Chirgwin, Evatt 1 ; Yang, Qiong 2 ; Umina, Paul A. 1 ; Thia, Joshua A. 2 ; Gill, Alex 2 ; Song, Wei 3 ; Gu, Xinyue 2 ; Ross, Perran A. 2 ; Wei, Shu-Jun 3 ; Hoffmann, Ary A. 2 ;
作者机构： 1.Cesar Australia, 95 Albert St, Brunswick, Vic 3056, Australia
2.Univ Melbourne, Bio21 Inst, Sch BioSci, PEARG Grp, Parkville, Vic 3010, Australia
3.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing 100097, Peoples R China
关键词： oat aphids; pest; agriculture; biocontrol; thermotolerance; luteovirus; insects; GxG; climate; symbionts
期刊名称：MICROORGANISMS （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN：
年卷期： 2024 年 12 卷 1 期
页码：
收录情况： SCI
摘要： The barley yellow dwarf virus (BYDV) of cereals is thought to substantially increase the high-temperature tolerance of its aphid vector, Rhopalosiphum padi, which may enhance its transmission efficiency. This is based on experiments with North American strains of BYDV and R. padi. Here, we independently test these by measuring the temperature tolerance, via Critical Thermal Maximum (CTmax) and knockdown time, of Australian R. padi infected with a local BYDV isolate. We further consider the interaction between BYDV transmission, the primary endosymbiont of R. padi (Buchnera aphidicola), and a transinfected secondary endosymbiont (Rickettsiella viridis) which reduces the thermotolerance of other aphid species. We failed to find an increase in tolerance to high temperatures in BYDV-infected aphids or an impact of Rickettsiella on thermotolerance. However, BYDV interacted with R. padi endosymbionts in unexpected ways, suppressing the density of Buchnera and Rickettsiella. BYDV density was also fourfold higher in Rickettsiella-infected aphids. Our findings indicate that BYDV does not necessarily increase the temperature tolerance of the aphid transmission vector to increase its transmission potential, at least for the genotype combinations tested here. The interactions between BYDV and Rickettsiella suggest new ways in which aphid endosymbionts may influence how BYDV spreads, which needs further testing in a field context.
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