| 项目编号: | 1655182
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| 项目名称: | Collaborative Research: The interplay between fluctuating selection on symbionts and life cycle evolution in sap-sucking insects |
| 作者: | Carol von Dohlen
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| 承担单位: | Utah State University
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| 批准年: | 2017
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| 开始日期: | 2017-05-01
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| 结束日期: | 2020-04-30
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| 资助金额: | 318569
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | insect
; symbiont genome
; dual symbiont
; evolution
; research
; bacterium
; insect ecology
; life-cycle complexity
; life cycle
; several forest pest insect
; symbiont function
; insect diet
; evolutionary change
; insect gene
; different insect feeding mode
; project study adelgidae insect
; insect host
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| 英文摘要: | Insects that feed on the sap of their host plants, including many crop and forest pests, have within them beneficial bacteria that provide the insects with essential nutrients that are missing from their diet. This research quantifies how the properties of those bacteria have been affected by evolutionary changes in insect diets; it further explores the role that the bacteria have played in how the insects use new host plants and in the insect's life cycle. This knowledge is important because it highlights bacteria as hidden players in major aspects of insect ecology and evolution. Information from this project may also assist in the control of several forest pest insects. This project will provide training for graduate students, undergraduates, and high-school students, including individuals from groups that are underrepresented in the sciences, and will promote public events to enhance scientific literacy and appreciation for research.
This project studies Adelgidae insects that feed on conifer trees, and their dual symbionts. It tests the hypothesis that fluctuating demands for nutrient provisioning in insects has led to symbiont replacements, which in turn have precipitated new host-plant acquisitions and life-cycle complexity. Specific objectives include (1) establishing a family-wide pattern of the unusual role allocations between dual symbionts; (2) quantifying the contributions of symbionts and insect hosts to nutrient provisioning as a measure of adjustment to nutrient availability; (3) quantifying rates of evolution in symbiont genomes under different insect feeding modes. These objectives will be accomplished through DNA and RNA sequencing of symbiont genomes and expressed insect genes that support symbiont functions. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90262
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Carol von Dohlen. Collaborative Research: The interplay between fluctuating selection on symbionts and life cycle evolution in sap-sucking insects. 2017-01-01.
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