Collaborative research: Evolutionary trade-offs in the adaptation of decomposers to global warming: Implications for ecosystem C balance

合作研究：分解者适应全球变暖的进化权衡：对生态系统碳平衡的影响

• 批准号: 1256896
• 负责人: Kathleen Treseder
• 金额: $ 60.03万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1256896&HistoricalAwards=false
• 关键词: Collaborative; research; Evolutionary; trade; offs

Soil fungi responsible for the decay and recycling of carbon may evolve in response to global warming. This could have serious consequences with respect to global change. This team of investigators posit that warmer temperatures may favor the evolution of fungi that can break down material that is long-lived(?recalcitrant?) in the soil . As a consequence, more greenhouse gases would be released to the atmosphere in a feedback loop that could lead to even warmer temperatures. This issue is particularly urgent in the northern, boreal forests of Alaska, which store large amounts of recalcitrant matter in their soils, and which are warming more rapidly than elsewhere. Research team members will be simulating global warming in such forests and examining its effects on fungi and their degradation activities. In addition, they will be exposing fungi to warming in laboratory experiments that will use genetic and physiological tests to examine how their ability to decompose recalcitrant materials changes over time.Human life cannot exist without fungi to decompose organic matter, since they recycle nutrients from dead organisms for use by plants, animals, and people. This study will provide explicit predictions of the different ways that global warming maybe affecting fungi. It will also be one of the first to examine the evolution of these microbes in response to global warming. In addition, the investigators will train one postdoctoral researcher, two graduate students and several undergraduate researchers, with an emphasis on recruitment of students from underrepresented groups in science. The investigators will also invite students and teachers from a nearby elementary school to participate in day-long mushroom forays and a global change field trip.

负责碳腐烂和回收碳的土壤真菌可能会因全球变暖而发展。 这可能会对全球变化产生严重的后果。该研究人员认为，较高的温度可能有利于真菌的演变，这种真菌可以分解土壤中长期存在的材料（？顽固？）。结果，更多的温室气体将以反馈回路释放到大气中，这可能导致温度更高。在阿拉斯加的北部北方森林中，这个问题尤为紧迫，该森林将大量的顽固物质存储在土壤中，并且比其他地方更快地变暖。研究小组成员将模拟此类森林中的全球变暖，并检查其对真菌及其降解活动的影响。此外，他们将使真菌暴露于实验室实验中的变暖，这些实验实验将使用遗传和生理测试来检查其分解顽固性材料的能力随着时间的流逝而变化。没有真菌分解有机物的人类生命就不可能存在，因为它们可以从死生物中恢复植物，动植物，动物，动物和人，以及人类的使用，以及人类的使用。 这项研究将为全球变暖可能影响真菌的不同方式提供明确的预测。这也将是最早根据全球变暖来检查这些微生物的演变的人之一。此外，研究人员将培训一名博士后研究员，两名研究生和几位本科研究人员，重点是从科学领域代表性不足的群体中招募学生。调查人员还将邀请附近一所小学的学生和老师参加为期一天的蘑菇尝试和全球变化野外旅行。