Host plants and Wolbachia shape the population genetics of sympatric herbivore populations.
Host plants and Wolbachia shape the population genetics of sympatric herbivore populations.
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DOI：
10.1111/eva.13079
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发表时间：
2020-12
影响因子：
4.1
通讯作者：
Snyder WE
中科院分区：
文献类型：
--
作者：
Fu Z;Meier AR;Epstein B;Bergland AO;Castillo Carrillo CI;Cooper WR;Cruzado RK;Horton DR;Jensen AS;Kelley JL;Rashed A;Reitz SR;Rondon SI;Thinakaran J;Wenninger EJ;Wohleb CH;Crowder DW;Snyder WE
不断变化的气候和土地利用方式有可能将以前孤立的害虫种群带入新的同域性。这就需要更好地了解不同的寄主植物关联模式和独特的内共生体如何促进遗传隔离或整合。我们解决了这些因素在人口中的马铃薯木虱，Bactericera cockerelli（Šulc），一个多面手草食动物，载体的细菌病原体（青枯病，斑马片病的致病病原体）的马铃薯（马铃薯）。全基因组SNP数据揭示了两个主要的遗传簇--从马铃薯作物中收集的木虱与在一种常见杂草枸杞属上发现的木虱遗传相似，但与另一种常见的非作物宿主Solanum dulcamara L上发现的那些不同。大多数木虱发现于枸杞属。和马铃薯代表了一个单一的线粒体细胞色素氧化酶I（COI）单倍型，已被认为不是本地的地区，其到来可能是同时与斑马芯片病首次出现。脓杆菌引入的COI单倍型通常与内共生的沃尔巴克氏体共存，而脓杆菌常驻的COI单倍型通常不存在。两个遗传种群的昆虫之间的遗传中间体是罕见的，最近同域或生殖隔离相一致，虽然混合模式的明显的杂种是一致的基因渗入引入居民种群。我们的研究结果表明，寄主植物协会和内共生体正在塑造与不同非作物宿主相关的同域木虱种群的种群遗传结构。明确研究这两个种群及其潜在杂交种的媒介能力是未来的兴趣所在，因为种群结构和杂交可能会改变区域媒介能力和疾病爆发。
Changing climate and land‐use practices have the potential to bring previously isolated populations of pest insects into new sympatry. This heightens the need to better understand how differing patterns of host–plant association, and unique endosymbionts, serve to promote genetic isolation or integration. We addressed these factors in populations of potato psyllid, Bactericera cockerelli (Šulc), a generalist herbivore that vectors a bacterial pathogen (Candidatus Liberibacter solanacearum, causal pathogen of zebra chip disease) of potato (Solanum tuberosum L.). Genome‐wide SNP data revealed two major genetic clusters—psyllids collected from potato crops were genetically similar to psyllids found on a common weed, Lycium spp., but dissimilar from those found on another common non‐crop host, Solanum dulcamara L. Most psyllids found on Lycium spp. and potato represented a single mitochondrial cytochrome oxidase I (COI) haplotype that has been suggested to not be native to the region, and whose arrival may have been concurrent with zebra chip disease first emerging. The putatively introduced COI haplotype usually co‐occurred with endosymbiotic Wolbachia, while the putatively resident COI haplotype generally did not. Genetic intermediates between the two genetic populations of insects were rare, consistent with recent sympatry or reproductive isolation, although admixture patterns of apparent hybrids were consistent with introgression of genes from introduced into resident populations. Our results suggest that both host–plant associations and endosymbionts are shaping the population genetic structure of sympatric psyllid populations associated with different non‐crop hosts. It is of future interest to explicitly examine vectorial capacity of the two populations and their potential hybrids, as population structure and hybridization might alter regional vector capacity and disease outbreaks.
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影响因子：
48
作者：
Callahan BJ;McMurdie PJ;Rosen MJ;Han AW;Johnson AJ;Holmes SP
通讯作者：
Holmes SP
影响因子：
1.7
作者：
Carrillo, C. I. Castillo;Fu, Z.;Snyder, W. E.
通讯作者：
Snyder, W. E.
亚洲柑橘花园（diaphorina citri kuwayama）中内共生密度的人口间变异性。
影响因子：
3.6
作者：
Chu CC;Gill TA;Hoffmann M;Pelz-Stelinski KS
通讯作者：
Pelz-Stelinski KS
影响因子：
4.1
作者：
Crossley, Michael S.;Rondon, Silvia, I;Schoville, Sean D.
通讯作者：
Schoville, Sean D.
影响因子：
3.3
作者：
Foll, Matthieu;Gaggiotti, Oscar
通讯作者：
Gaggiotti, Oscar