EAPSI: Beetle-fungus fidelity: an investigation into how ambrosia beetles maintain their fungal symbionts

EAPSI：甲虫-真菌保真度：对豚草甲虫如何维持真菌共生体的调查

• 批准号: 1414801
• 负责人: Craig Bateman
• 金额: $ 0.51万
• 依托单位: Bateman Craig C
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1414801&HistoricalAwards=false
• 关键词: EAPSI; Beetle; fungus; fidelity; investigation

Ambrosia beetles are a harmless component of many forests where they grow and maintain gardens of symbiotic fungi inside dead or dying trees. This habit has changed for some ambrosia beetles that have been accidentally introduced into regions that are distant from their native range. Non-native ambrosia beetles can attack healthy trees, causing tree death with the fungi they carry. For example, redbay trees in the southeast United States now lie on a path to extinction since the arrival of the redbay ambrosia beetle and its associated fungus from Asia. The proposed project will investigate how ambrosia beetles maintain their relationship with fungi, which are often the causal agent in tree death. Beetles and fungi will be collected in collaboration with Dr. Wang Bo of the Xishuangbanna Tropical Botanical Gardens in southern China, a region which hosts some of the largest diversity of ambrosia beetles on earth. Results generated from this study will be used to predict which non-native beetles may be carrying tree-killing fungi and whether those fungi may be shared with other beetle species. Pestiferous, non-native ambrosia beetles greatly threaten forest ecosystems across the world. It's currently unknown how frequently exotic beetles may share their symbiotic plant pathogenic fungi with native beetles, and how faithful the beetles are to specific fungal partners. This project will determine how the ambrosia symbiosis is maintained through high-throughput and culture-based analyses of the fungal communities from diverse ambrosia beetle clades in both native and exotic territories. Understanding these relationships will allow for predictions about the probability of tree-pathogens spreading to different beetle species, which is key for informed management of these complexes as they are introduced to non-native regions. This NSF EAPSI award is funded in collaboration with the Chinese Ministry of Science and Technology.

豚草甲虫是许多森林中无害的组成部分，它们在死亡或垂死的树木中生长和维持共生真菌的花园。这种习惯已经改变了一些豚草甲虫已经意外地引入到远离其原生范围的地区。非本地的豚草甲虫可以攻击健康的树木，导致树木死亡与真菌，他们携带。例如，美国东南部的红湾树现在正处于灭绝的道路上，因为红湾仙果甲虫及其相关的真菌从亚洲来到这里。拟议的项目将调查如何ambrosia甲虫保持与真菌的关系，这往往是在树木死亡的原因代理。甲虫和真菌将与中国南部西双版纳热带植物园的王波博士合作收集，该地区拥有地球上最大的豚草甲虫多样性。这项研究的结果将用于预测哪些非本地甲虫可能携带杀死树木的真菌，以及这些真菌是否可能与其他甲虫物种共享。非本地的豚草甲虫严重威胁着世界各地的森林生态系统。目前尚不清楚外来甲虫与本地甲虫共享共生植物病原真菌的频率，以及甲虫对特定真菌伴侣的忠诚度。本项目将确定如何通过高通量和基于文化的分析，从不同的土荆芥甲虫分支在本地和外来领土的真菌群落的土荆芥共生维持。了解这些关系将允许预测树木病原体传播到不同甲虫物种的概率，这是明智的管理这些复杂的关键，因为它们被引入到非本地地区。NSF EAPSI奖是与中国科技部合作资助的。