Evolution of Opsin Genes in Caddisflies (Insecta: Trichoptera).

IF 3.2 2区生物学 Q2 EVOLUTIONARY BIOLOGY

Genome Biology and Evolution Pub Date : 2024-09-03 DOI:10.1093/gbe/evae185

Ashlyn Powell, Jacqueline Heckenhauer, Steffen U Pauls, Blanca Ríos-Touma, Ryoichi B Kuranishi, Ralph W Holzenthal, Ernesto Razuri-Gonzales, Seth Bybee, Paul B Frandsen

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Abstract

Insects have evolved complex and diverse visual systems in which light-sensing protein molecules called "opsins" couple with a chromophore to form photopigments. Insect photopigments group into three major gene families based on wavelength sensitivity: long wavelength (LW), short wavelength (SW), and ultraviolet wavelength (UV). In this study, we identified 123 opsin sequences from whole-genome assemblies across 25 caddisfly species (Insecta: Trichoptera). We discovered the LW opsins have the most diversity across species and form two separate clades in the opsin gene tree. Conversely, we observed a loss of the SW opsin in half of the trichopteran species in this study, which might be associated with the fact that caddisflies are active during low-light conditions. Lastly, we found a single copy of the UV opsin in all the species in this study, with one exception: Athripsodes cinereus has two copies of the UV opsin and resides within a clade of caddisflies with colorful wing patterns.

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蝌蚪（昆虫纲：毛翅目）中光学蛋白基因的进化。

昆虫进化出了复杂多样的视觉系统，在该系统中，称为 "视蛋白 "的光感应蛋白分子与发色团结合形成光敏色素。根据对波长的敏感性，昆虫的光敏色素可分为三大基因家族：长波长（LW）、短波长（SW）和紫外线波长（UV）。在这里，我们从 25 个蝶形目物种（昆虫纲：毛翅目）的全基因组组装中鉴定出 123 个蛋白酶序列。我们发现 LW 蛋白在不同物种间具有最大的多样性，并在蛋白基因树中形成了两个独立的支系。与此相反，我们在本研究中观察到半数毛翅目物种丧失了 SW 蛋白，这可能与蝶类在弱光条件下活动有关。最后，我们在本研究的所有物种中都发现了单拷贝的紫外光视蛋白，只有一个物种例外：Athripsodes cinereus有两个紫外可见光蛋白拷贝，属于翅纹色彩斑斓的蝶类。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Genome Biology and Evolution EVOLUTIONARY BIOLOGY-GENETICS & HEREDITY

CiteScore

5.80

自引率

6.10%

发文量

169

审稿时长

1 months

期刊介绍： About the journal Genome Biology and Evolution (GBE) publishes leading original research at the interface between evolutionary biology and genomics. Papers considered for publication report novel evolutionary findings that concern natural genome diversity, population genomics, the structure, function, organisation and expression of genomes, comparative genomics, proteomics, and environmental genomic interactions. Major evolutionary insights from the fields of computational biology, structural biology, developmental biology, and cell biology are also considered, as are theoretical advances in the field of genome evolution. GBE’s scope embraces genome-wide evolutionary investigations at all taxonomic levels and for all forms of life — within populations or across domains. Its aims are to further the understanding of genomes in their evolutionary context and further the understanding of evolution from a genome-wide perspective.