Studies of Antarctic Fungi: Adaptive Stratigies for Survival and Protecting Antarctica's Historic Structures

南极真菌研究：生存和保护南极历史结构的适应性策略

• 批准号: 0537143
• 负责人: Robert Blanchette
• 金额: $ 40.27万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0537143&HistoricalAwards=false
• 关键词: Studies; Antarctic; Fungi; Adaptive; Stratigies

Fungi in Antarctic ecosystems are major contributors to biodiversity and have great influence on many processes such as biodegradation and nutrient cycling. It is essential for biological surveys as well as genomic and proteomic studies to be completed so a better understanding of these organisms is obtained. Previous research has identified unique fungi associated with historic wooden structures brought to Antarctica by Robert F. Scott and Ernest Shackleton during the Heroic Era of exploration. Many of the fungi found are previously undescribed species that belong to the little known genus Cadophora. The research team will obtain important new information on the fungi present in the Ross Sea and Peninsula Regions of Antarctica, particularly their role in decomposition and nutrient recycling and their mechanisms and strategies for survival in the polar environment. New tools and methods include denaturing gradient gel electrophoresis (DGGE), real-time PCR, and proteomic profiling. These analyses will reveal key details of the physiological adaptations these fungi have evolved to carry out processes such as biodegradation and nutrient cycling under conditions that would inhibit other fungi. This work, coupled with the training and learning opportunities it provides, will be of value to many fields of study including microbial ecology, polar biology, wood microbiology, environmental science, soil science, geobiochemistry, and mycology as well as fungal phylogenetics, proteomics and genomics. Results obtained will have immediate applied use to help preserve and protect Antarctica's historic monuments. The investigations proposed are a continuation of research to identify the microbes attacking these historic structures and artifacts and to elucidate their biology and ecology in the polar environment. New research will also be done at the historic Cape Adare huts, the first wooden structures to be built in Antarctica and also at East Base, an American historic site on Stonington Island from the Admiral Byrd and Ronne Expeditions of 1939-1948. The research team will conduct vital studies needed to successfully conserve the wooden structures and artifacts at these sites and protect them for future generations

南极生态系统中的真菌是生物多样性的主要贡献者，并对生物降解和营养循环等许多过程产生重大影响。这对于完成生物学调查以及基因组和蛋白质组研究至关重要，以便更好地了解这些生物体。之前的研究已经发现了与罗伯特·F·斯科特和欧内斯特·沙克尔顿在英勇的探索时代带到南极洲的历史木结构建筑有关的独特真菌。许多发现的真菌是以前没有描述过的物种，属于鲜为人知的Cadhora属。研究小组将获得有关南极洲罗斯海和半岛地区真菌的重要新信息，特别是它们在分解和营养循环中的作用，以及它们在极地环境中生存的机制和策略。新的工具和方法包括变性梯度凝胶电泳(DGGE)、实时聚合酶链式反应和蛋白质组谱分析。这些分析将揭示这些真菌进化为在抑制其他真菌的条件下进行生物降解和营养循环等过程的生理适应的关键细节。这项工作，加上它提供的培训和学习机会，将对许多领域的研究具有价值，包括微生物生态学、极地生物学、木材微生物学、环境科学、土壤科学、地球生物化学和真菌学以及真菌系统发育学、蛋白质组学和基因组学。所取得的成果将立即应用于帮助保存和保护南极洲的历史遗迹。拟议的调查是一项继续研究，以确定攻击这些历史建筑和文物的微生物，并阐明它们在极地环境中的生物学和生态学。新的研究还将在历史悠久的阿达雷角小屋进行，这是在南极洲建造的第一批木结构建筑，也将在东基地进行，东基地是美国在斯通宁顿岛的历史遗迹，1939年至1948年的伯德上将和罗恩远征。研究小组将进行重要的研究，以成功地保护这些遗址的木结构和文物，并为子孙后代保护它们