Collaborative Research: Camponotine Ants and their Little Helpers: Phylogenomics of a Hyperdiverse Insect Clade and its Bacterial Endosymbionts (CAnBE)
合作研究:Camponotine 蚂蚁和它们的小帮手:超多样化昆虫进化枝及其细菌内共生体的系统基因组学 (CAnBE)
基本信息
- 批准号:1856425
- 负责人:
- 金额:$ 34.8万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-09-01 至 2024-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Recent years have seen an explosion of curiosity and interest in the microbial associates of humans, especially symbiotic associations with gut microbiota that convey benefits to human health. Such nutritional symbioses occur frequently across many different organisms, including primates, plants, and insects. This research will investigate the joint evolutionary history of a highly successful and diverse group of insects, carpenter ants and their relatives, and the bacteria Blochmannia. Carpenter ants are the most diverse and abundant group of ants in the world - most kids have encountered them while playing outside. All carpenter ants carry Blochmannia bacteria inside their gut cells, making the bacterium an endosymbiont. Both organisms rely on one another to survive. Evidence indicates that carpenter ants and Blochmannia have maintained a close nutritional partnership for tens of millions of years. Obligate symbiotic associations among different kinds of organisms can profoundly impact the nature and tempo of the evolution of both partners, and microbial endosymbionts have been suggested to have played important roles in the diversification of some insect groups. This research will determine how the carpenter ants and their relatives evolved alongside Blochmannia. The findings will improve our understanding of how symbioses arise and are maintained in animals, with potential implications for the evolution of human-associated microbial systems. Moreover, the project will emphasize public education in ant biodiversity and microbial symbioses, and the training of early-career scientists.This research will infer the phylogeny, divergence times, and biogeographic history of ants in the tribe Camponotini, and use this comparative framework to advance systematic and co-evolutionary studies of their endosymbiotic bacteria Blochmannia. Like other obligate endosymbionts, Blochmannia exhibits substantial genome reduction compared to free-living bacteria. Genome evolution and functional variation in Blochmannia will be evaluated across a phylogenetically representative selection of camponotine ants with contrasting morphological and ecological attributes. By jointly elucidating the ant and endosymbiont evolutionary histories, the project will address such questions as: (1) What are the major features of Blochmannia genome evolution across the Camponotini clade? (2) What processes shape rates and patterns of Blochmannia sequence evolution? (3) Is Blochmannia gene content variation associated with particular camponotine host attributes? By linking phylogenetic and trait data on the ants to functional genomic properties of the bacteria we will gain an understanding of the selective forces and constraints underlying this remarkable symbiosis. A detailed phylogeny of the camponotine ants will also create a strong foundation for much-needed monographic work on this taxonomically neglected group, and allow the development of more effective identification tools.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
近年来,人们对人类微生物群的好奇心和兴趣激增,特别是与肠道微生物群的共生关系,这些微生物群对人类健康有好处。这种营养共生经常发生在许多不同的有机体中,包括灵长类动物、植物和昆虫。这项研究将调查一组非常成功和多样化的昆虫、木蚁及其近亲以及细菌Blochmannia的共同进化史。木蚁是世界上种类最多、数量最多的蚂蚁--大多数孩子在户外玩耍时都遇到过它们。所有的木蚁都会在肠道细胞中携带布洛克曼氏菌,使这种细菌成为一种内共生体。这两种生物相互依赖才能生存。有证据表明,木蚁和布洛赫曼尼亚几千万年来一直保持着密切的营养伙伴关系。不同种类生物之间的专性共生关系可以深刻地影响双方进化的性质和节奏,微生物内共生体被认为在一些昆虫种群的多样化中发挥了重要作用。这项研究将确定木蚁和它们的近亲如何与布洛赫曼尼亚蚂蚁一起进化。这些发现将提高我们对共生如何在动物中产生和维持的理解,并可能对人类相关微生物系统的进化产生影响。此外,该项目将强调蚂蚁生物多样性和微生物共生的公共教育,以及对早期职业科学家的培训。这项研究将推断坎波奥蒂尼部落蚂蚁的系统发育、分化时间和生物地理史,并利用这个比较框架来推进对其内共生细菌Blochmannia的系统和共同进化研究。与其他专性内共生体一样,与自由生活的细菌相比,布洛赫曼尼亚表现出大幅的基因组减少。将通过具有不同形态和生态属性的具有代表性的弯曲蚁的系统发育选择来评估Blochmannia的基因组进化和功能变异。通过联合阐明蚂蚁和内共生生物的进化史,该项目将解决以下问题:(1)跨Camponotini分支的Blochmannia基因组进化的主要特征是什么?(2)Blochmannia序列进化的过程、形状、速率和模式?(3)Blochmannia基因含量的变化是否与特定的Camponotine宿主属性有关?通过将蚂蚁的系统发育和特征数据与细菌的功能基因组特性联系起来,我们将了解这种显着共生关系背后的选择性力量和限制因素。对黄蚁的详细系统发育也将为对这一分类上被忽视的群体进行亟需的专题性工作奠定坚实的基础,并允许开发更有效的识别工具。这一奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Jennifer Wernegreen其他文献
Jennifer Wernegreen的其他文献
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{{ truncateString('Jennifer Wernegreen', 18)}}的其他基金
Collaborative Research: MIP: How Responsive are Bacterial Endosymbionts to Physiological and Eological Variation in Their Ant Hosts?
合作研究:MIP:细菌内共生体对其蚂蚁宿主的生理和生态变化的反应如何?
- 批准号:
1103113 - 财政年份:2010
- 资助金额:
$ 34.8万 - 项目类别:
Continuing Grant
Collaborative Research: MIP: How Responsive are Bacterial Endosymbionts to Physiological and Eological Variation in Their Ant Hosts?
合作研究:MIP:细菌内共生体对其蚂蚁宿主的生理和生态变化的反应如何?
- 批准号:
0604177 - 财政年份:2007
- 资助金额:
$ 34.8万 - 项目类别:
Continuing Grant
Distinguishing the Evolutionary Mechanisms Shaping Endosymbiont Genomes
区分塑造内共生基因组的进化机制
- 批准号:
0089455 - 财政年份:2001
- 资助金额:
$ 34.8万 - 项目类别:
Continuing Grant
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