Behavioral and Genomic Sensory Adaptations Underlying the Pest Activity of Drosophila suzukii.

Autor:	Durkin SM; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA.; Department of Integrative Biology and Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, CA, USA., Chakraborty M; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA, USA., Abrieux A; Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, CA, USA., Lewald KM; Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, CA, USA., Gadau A; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA., Svetec N; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA., Peng J; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA., Kopyto M; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA., Langer CB; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA., Chiu JC; Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, CA, USA., Emerson JJ; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA, USA., Zhao L; Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA.
Jazyk:	angličtina
Zdroj:	Molecular biology and evolution [Mol Biol Evol] 2021 May 19; Vol. 38 (6), pp. 2532-2546.
DOI:	10.1093/molbev/msab048
Abstrakt:	Studying how novel phenotypes originate and evolve is fundamental to the field of evolutionary biology as it allows us to understand how organismal diversity is generated and maintained. However, determining the basis of novel phenotypes is challenging as it involves orchestrated changes at multiple biological levels. Here, we aim to overcome this challenge by using a comparative species framework combining behavioral, gene expression, and genomic analyses to understand the evolutionary novel egg-laying substrate-choice behavior of the invasive pest species Drosophila suzukii. First, we used egg-laying behavioral assays to understand the evolution of ripe fruit oviposition preference in D. suzukii compared with closely related species D. subpulchrella and D. biarmipes as well as D. melanogaster. We show that D. subpulchrella and D. biarmipes lay eggs on both ripe and rotten fruits, suggesting that the transition to ripe fruit preference was gradual. Second, using two-choice oviposition assays, we studied how D. suzukii, D. subpulchrella, D. biarmipes, and D. melanogaster differentially process key sensory cues distinguishing ripe from rotten fruit during egg-laying. We found that D. suzukii's preference for ripe fruit is in part mediated through a species-specific preference for stiff substrates. Last, we sequenced and annotated a high-quality genome for D. subpulchrella. Using comparative genomic approaches, we identified candidate genes involved in D. suzukii's ability to seek out and target ripe fruits. Our results provide detail to the stepwise evolution of pest activity in D. suzukii, indicating important cues used by this species when finding a host, and the molecular mechanisms potentially underlying their adaptation to a new ecological niche. (© The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.)
Databáze:	MEDLINE
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