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：
2021
资助国家：
加拿大
起止时间：
2021-01-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=739191
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.

弗兰克氏菌属的土壤细菌在自然界中非常重要；据估计，全球 15% 至 25% 的固氮可归因于这些生物，不幸的是，对弗兰克氏菌及其与桤木根的共生的研究包括许多技术性内容。我正在使用最先进的技术来解决这些困难，并以综合的方式进行这项重要的研究，在接下来的五年里，我们将研究弗兰基亚树和其他桤木的生根方式。桤木根部的居民（共生真菌）在暴露于重金属污染或干旱时与寄主植物相互作用。迄今为止，我们对它们的生物学和相互作用的基础知识还不够。无法有效预测工业活动和全球变暖对它们的影响，也无法充分利用它们的潜力来解决这些相同的环境问题。这项研究将揭示桤木是否以及如何生长。更好地在先进的植物生物学和分子生物学方法将应用于在受控（温室）条件下进行的试验，以及魁北克北部金、铁和锂矿场的实验种植园的监测。