Alder-microbe interactions and adaptations in changing environments.

不断变化的环境中桤木微生物的相互作用和适应。

基本信息

批准号：
RGPIN-2019-06927
负责人：
Roy, Sébastien
金额：
$ 2.04万
依托单位：
Université de Sherbrooke
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716529
关键词：
Alder microbe interactions adaptations changing

项目摘要

Soil-dwelling bacteria of genus Frankia are very important in Nature; it is estimated that 15% to 25% of global nitrogen fixation can be attributed to these organisms. Unfortunately, the study of frankiae and their symbiosis with alder roots comprise a number of technical difficulties. I am addressing these difficulties using state-of-the-art techniques, and pursuing this important research in an integrated manner. Over the course of the following 5 years, we will study how frankiae and other alder root inhabitants (symbiotic fungi) from alder roots, interact with their host plant when it is exposed to heavy metal contamination, or drought. Both these environmental stressors are present where alder grow. To date, we have insufficient fundamental knowledge of their biology and interactions to effectively predict how industrial activities and global warming can impact them, nor harness their full potential to adress these same environmental issues. One important use of these plant-microbe systems is the revegetatation of disturbed mine sites. This research will reveal if and how alders fare better in the presence of their microbial partners when exposed to metals or drought. Advanced plant biology and molecular biology methods will be applied in trials conducted in controlled (greenhouse) conditions, and the monitoring of experimental plantations on gold, iron and lithium mine sites in Northern Québec.

弗兰基亚属的土壤细菌在本质上非常重要。据估计，全球氮固定的15％至25％可以归因于这些生物。不幸的是，对Frankiae的研究及其与Alder根部的共生有关，构成了许多技术困难。我正在使用最先进的技术解决这些困难，并以综合的方式追求这项重要的研究。在接下来的5年中，我们将研究Alder Roots的Frankiae和其他Alder根居民（共生真菌）如何在暴露于重金属污染或干旱时与他们的宿主植物相互作用。这两个环境压力源都存在于al木生长的地方。迄今为止，我们对其生物学和互动的基本知识不足，无法有效预测工业活动和全球变暖如何影响它们，也没有利用其全部潜力来解决这些相同的环境问题。这些植物菌系统的一种重要用途是对受干扰的矿场的重生。这项研究将揭示在暴露于金属或干旱时在微生物伴侣面前的年龄以及在其在场的情况下的年龄差得多。先进的植物生物学和分子生物学方法将用于在受控（温室）条件下进行的试验中，并在魁北克北部的黄金，铁和锂矿场对实验植物进行监测。