Relaxed selection underlies genome erosion in socially parasitic ant species

	Relaxed selection underlies genome erosion in socially parasitic ant species
	Schrader, L; Pan, H; Bollazzi, M; Schiott, M; Larabee, FJ; Bi, XP; Deng, Y; Zhang, GJ; Boomsma, JJ; Rabeling, C
	2021
发表期刊	NATURE COMMUNICATIONS
卷号	12 期号:1
摘要	Inquiline ants are highly specialized and obligate social parasites that infiltrate and exploit colonies of closely related species. They have evolved many times convergently, are often evolutionarily young lineages, and are almost invariably rare. Focusing on the leaf-cutting ant genus Acromyrmex, we compared genomes of three inquiline social parasites with their free-living, closely-related hosts. The social parasite genomes show distinct signatures of erosion compared to the host lineages, as a consequence of relaxed selective constraints on traits associated with cooperative ant colony life and of inquilines having very small effective population sizes. We find parallel gene losses, particularly in olfactory receptors, consistent with inquiline species having highly reduced social behavioral repertoires. Many of the genomic changes that we uncover resemble those observed in the genomes of obligate non-social parasites and intracellular endosymbionts that branched off into highly specialized, host-dependent niches. Many obligate symbionts, including parasites, have reduced genomes. A comparison of leaf-cutter ant genomes reveals parallel gene losses, particularly in olfactory receptors, in socially parasitic species compared to their closely-related hosts, consistent with relaxed selection for cooperative colony life in the parasites.
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/13445
专题	科研部门_遗传多样性基因组学研究组（张国捷）
推荐引用方式 GB/T 7714	Schrader, L,Pan, H,Bollazzi, M,et al. Relaxed selection underlies genome erosion in socially parasitic ant species[J]. NATURE COMMUNICATIONS,2021,12(1).
APA	Schrader, L.,Pan, H.,Bollazzi, M.,Schiott, M.,Larabee, FJ.,...&Rabeling, C.(2021).Relaxed selection underlies genome erosion in socially parasitic ant species.NATURE COMMUNICATIONS,12(1).
MLA	Schrader, L,et al."Relaxed selection underlies genome erosion in socially parasitic ant species".NATURE COMMUNICATIONS 12.1(2021).

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