Additive genetic effects in interacting species jointly determine the outcome of caterpillar herbivory
Additive genetic effects in interacting species jointly determine the outcome of caterpillar herbivory
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DOI：
10.1101/2022.01.20.476992
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发表时间：
2022-01
影响因子：
11.1
通讯作者：
Z. Gompert;Tara C. Saley;Casey S. Philbin;Su’ad A. Yoon;Eva Perry;Michelle E. Sneck;J. Harrison;C. A. Buerkle;J. Fordyce;C. Nice;C. Dodson;Sarah L. Lebeis;Lauren K. Lucas;M. Forister
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文献类型：
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作者：
Z. Gompert;Tara C. Saley;Casey S. Philbin;Su’ad A. Yoon;Eva Perry;Michelle E. Sneck;J. Harrison;C. A. Buerkle;J. Fordyce;C. Nice;C. Dodson;Sarah L. Lebeis;Lauren K. Lucas;M. Forister
植物与昆虫的相互作用在基础生物学和应用生物学中是常见且重要的。性状和遗传变异可以影响这些相互作用的结果和进化，但植物和昆虫遗传变异的相对贡献以及它们如何相互作用仍不清楚，并且很少在相同的实验背景下进行评估。在这里，我们利用梅丽莎蓝蝴蝶最近将宿主范围扩展到苜蓿来解决这一知识差距。常见的花园饲养实验和基因组数据表明，毛毛虫的表现取决于植物和昆虫的遗传变异，昆虫遗传学有助于发育早期的表现，而植物遗传学则有助于后期的表现。当应用于第二个公共花园时，我们基于毛毛虫遗传学的性能模型保留了预测能力。大部分植物遗传效应可以通过植物化学物质（尤其是皂苷、肽和磷脂酰胆碱）的遗传变异来解释，从而提供对物种相互作用变异的机制理解。我们发现了多基因效应的证据，主要是物种内部和物种之间的加性效应，植物基因型对多个蝴蝶物种的生长和发育具有一致的影响。我们的结果为植物-昆虫共同进化以及草食性昆虫和其他宿主特异性寄生虫的饮食宽度进化的理论提供了信息。预告片摘要 植物和昆虫遗传变异的综合叠加效应解释了梅丽莎蓝毛毛虫在苜蓿植物上的生长和发育。
Plant-insect interactions are common and important in basic and applied biology. Trait and genetic variation can affect the outcome and evolution of these interactions, but the relative contributions of plant and insect genetic variation and how these interact remain unclear and are rarely subject to assessment in the same experimental context. Here we address this knowledge gap using a recent host range expansion onto alfalfa by the Melissa blue butterfly. Common garden rearing experiments and genomic data show that caterpillar performance depends on plant and insect genetic variation, with insect genetics contributing to performance earlier in development and plant genetics later. Our models of performance based on caterpillar genetics retained predictive power when applied to a second common garden. Much of the plant genetic effect could be explained by heritable variation in plant phytochemicals, especially saponins, peptides, and phosphatidyl cholines, providing a mechanistic understanding of variation in the species interaction. We find evidence of polygenic, mostly additive effects within and between species, with consistent effects of plant genotype on growth and development across multiple butterfly species. Our results inform theories of plant-insect coevolution and the evolution of diet breadth in herbivorous insects and other host-specific parasites. Teaser summary The combined, additive effects of plant and insect genetic variation explain Melissa blue caterpillar growth and development on alfalfa plants.