Collaborative Research: Dimensions: Coevolution of scleractinian corals and their associated microorganisms

合作研究：维度：石珊瑚及其相关微生物的共同进化

• 批准号: 1442306
• 负责人: Rebecca Vega
• 金额: $ 109.6万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1442306&HistoricalAwards=false
• 关键词: Collaborative; Research; Dimensions; Coevolution; scleractinian

Coral reefs are among the most biologically diverse marine ecosystems on the planet, and provide substantial economic and ecological benefits to coastal communities. Corals are composed of both the Cnidarian animal host and complex communities of unique and underexplored microbial organisms. Today these natural wonders are in global decline, threatened by the intersecting effects of multiple stressors including overfishing, pollution, and climate change. These stressors can alter coral microbial communities in ways that may contribute to the susceptibility of corals to disease or overgrowth by algae. Therefore, understanding the relationships between corals and their microbiota may be useful for efforts to understand coral disease and preserve reef ecosystems. The microbial diversity of coral species in many diverse and ancient groups of corals remains unexplored, but understanding these communities will help to extend the knowledge gained in well-studied corals to diverse reefs worldwide. This project aims to describe microbial diversity across all major groups of reef-building corals in each of several distinct ecosystems across the globe, to determine the genome sequences and metabolic capabilities of key coral bacteria, and to test whether the composition of coral microbial communities helps to explain the overall vulnerability or resistance of different coral species to stress or disease. The project includes plans for maximizing public access, scientific community building, and training opportunities for early-career scientists. The project will fund two hispanic principal investigators, two PhD students, and two postdoctoral researchers in laboratory and field research - and also in key computational techniques for managing "Big Data". Project funds will support an extension of a program of collaborative, multilingual scientific podcasts; establishment of recurring science cafes; K-5 coral reef educational modules tested successfully for incorporation into the curriculum in the State College School District; and educational video segments. Coral species differ in their susceptibility to bleaching and disease, but these differences are only partially explained by coral phylogeny. Therefore this project will test the extent to which incorporating the microbiota (or their contributed genes) better predicts these and other traits. Recent technological advances have broadened understanding of how complex microbiomes shape the life history, physiology, and evolution of their multicellular hosts (e.g., the human microbiome). The use of newly developed DNA sequencing techniques will allow a more complete exploration of microbial diversity in corals than has previously been feasible, while advanced computational methods will help to maximize the value of sequenced bacterial genomes. Improved predictive models that incorporate both coral phylogeny and microbial function will help inform conservation strategies and yield predictive biomarkers for coral vulnerability to disease or bleaching. Relating the diversity of corals to the diversity of their microbes will also provide important insights into how intimate symbiotic associations with microorganisms arose and are maintained in diverse animals.

珊瑚礁是地球上生物多样性最丰富的海洋生态系统之一，为沿海社区提供了巨大的经济和生态效益。珊瑚由刺胞动物宿主和复杂的独特和未被探索的微生物群落组成。今天，这些自然奇观在全球范围内正在衰落，受到过度捕捞，污染和气候变化等多重压力因素的交叉影响的威胁。这些压力可以改变珊瑚微生物群落的方式，可能有助于珊瑚的疾病或藻类过度生长的易感性。因此，了解珊瑚与其微生物群之间的关系可能有助于了解珊瑚疾病和保护珊瑚礁生态系统。许多不同和古老的珊瑚群中的珊瑚物种的微生物多样性仍未得到探索，但了解这些社区将有助于将在充分研究珊瑚中获得的知识扩展到世界各地的各种珊瑚礁。该项目旨在描述地球仪几个不同生态系统中所有主要造礁珊瑚群的微生物多样性，确定关键珊瑚细菌的基因组序列和代谢能力，并测试珊瑚微生物群落的组成是否有助于解释不同珊瑚物种对压力或疾病的总体脆弱性或抵抗力。该项目包括最大限度地扩大公众访问，科学社区建设和早期职业科学家培训机会的计划。该项目将资助两名西班牙裔首席研究员，两名博士生和两名博士后研究人员进行实验室和实地研究-以及管理“大数据”的关键计算技术。项目资金将用于支持一个合作性多语种科学播客方案的扩展;建立经常性的科学咖啡馆;成功测试了K-5珊瑚礁教育模块，以纳入州立大学学区的课程;以及教育视频片段。 不同的珊瑚物种对漂白和疾病的敏感性不同，但这些差异只能部分地用珊瑚的繁殖来解释。因此，该项目将测试结合微生物群（或其贡献的基因）更好地预测这些和其他特征的程度。最近的技术进步扩大了对复杂微生物组如何塑造其多细胞宿主的生活史、生理学和进化的理解（例如，人类微生物组）。使用新开发的DNA测序技术将能够比以前更全面地探索珊瑚中的微生物多样性，而先进的计算方法将有助于最大限度地发挥测序细菌基因组的价值。改进的预测模型，结合珊瑚的生长发育和微生物的功能，将有助于通知保护战略，并产生预测生物标志物的珊瑚脆弱性疾病或漂白。将珊瑚的多样性与其微生物的多样性联系起来，也将为了解与微生物的亲密共生关系如何在不同的动物中产生和维持提供重要的见解。