Expansions and contractions in gene families of independently-evolved blood-feeding insects.

IF 3.4 Q1 Agricultural and Biological Sciences
Lucas Freitas, Mariana F Nery
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引用次数: 0

Abstract

Background: The blood-feeding behavior evolved multiple times in Insecta lineages and it represents an excellent opportunity to study patterns of convergent molecular evolution regarding this habit. In insects the expansion of some gene families is linked with blood-feeding behavior, but a wide study comparing the evolution of these gene families among different lineages is still missing. Here we gathered genomic data from six independently-evolved hematophagous lineages, aiming to identify convergent expansions and/or contractions of gene families in hematophagous lineages of insects.

Results: We found four rapidly evolving gene families shared by at least two hematophagous independently-evolved lineages, including a heat-shock and a chemosensory protein. On the expression of these four rapidly evolving gene families we found more genes expressed in mated individuals compared with virgin individuals in rapidly-expanded families and more genes expressed in non-blood-feeding individuals compared with blood-feeding individuals in rapidly-contracted families.

Conclusion: Our results reveal a new set of candidate genes to be explored in further analysis to help the development of new strategies to deal with blood-feeding vectors and also presents a new perspective to study the evolution of hematophagy identifying convergent molecular patterns.

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独立进化的食血昆虫基因家族的扩张与收缩
背景:吸血行为在昆虫系中经历了多次进化,这是研究这一习性的趋同分子进化模式的绝佳机会。在昆虫中,一些基因家族的扩展与吸血行为有关,但目前仍缺乏对这些基因家族在不同品系间的进化进行比较的广泛研究。在此,我们收集了六个独立进化的食血系的基因组数据,旨在确定昆虫食血系中基因家族的趋同性扩张和/或收缩:结果:我们发现至少两个独立进化的噬血系共有四个快速进化的基因家族,包括一个热休克蛋白和一个化学感应蛋白。在这四个快速进化基因家族的表达方面,我们发现在快速扩展的家族中,交配个体比处女个体表达更多的基因;在快速收缩的家族中,非吸血个体比吸血个体表达更多的基因:我们的研究结果揭示了一组新的候选基因,有待进一步分析探讨,以帮助开发新的策略来对付噬血媒介,同时也为研究噬血进化提供了一个新的视角,以识别趋同的分子模式。
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
BMC Evolutionary Biology
BMC Evolutionary Biology 生物-进化生物学
CiteScore
5.80
自引率
0.00%
发文量
0
审稿时长
6 months
期刊介绍: BMC Evolutionary Biology is an open access, peer-reviewed journal that considers articles on all aspects of molecular and non-molecular evolution of all organisms, as well as phylogenetics and palaeontology.
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