Earthworm-microbial interactions controlling nitrous oxide production in perennial grass- and legume- based agroecosystems using stable isotopes and molecular markers
使用稳定同位素和分子标记控制多年生草和豆类农业生态系统中一氧化二氮产生的蚯蚓-微生物相互作用
基本信息
- 批准号:238323-2010
- 负责人:
- 金额:$ 3.13万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2015
- 资助国家:加拿大
- 起止时间:2015-01-01 至 2016-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Earthworms are well known for their contribution to soil fertility and crop production. Agroecosystems with perennial vegetation, such as grass- and legume-based hayfields, support large earthworm populations because soils are undisturbed by cultivation and senescing plant residues are a food source for earthworms. Under these conditions, earthworm-created structures like surface and subsurface casts (fecal pellets), middens (soil-litter mixture at the soil surface) and burrows are numerous. These structures are a favorable habitat for microbial nitrifiers and denitrifiers that produce nitrous oxide, a potent greenhouse gas, as a byproduct of their metabolism. Previous laboratory studies by my research group have shown that earthworms stimulate nitrous oxide production, leading me to hypothesize that earthworm-microbial interactions lead to nitrous oxide production at small scales (microcosms, small field plots) and may contribute to seasonal nitrous oxide emissions at the agroecosystem level. These biological interactions will be evaluated with cutting-edge research tools, including 15N isotope dilution and DNA methods (q-PCR amplification of amoA, nosZ and other relevant genes, DNA-stable isotope probing). These advanced techniques tremendously increase our chance of discovering novel organisms and gaining new insights into microbially-mediated N transformations. Mathematical functions describing the earthworm-microbial relationships that contribute to nitrous oxide emissions from soils will be incorporated into predictive ecosystem-level models (DNDC, ecosys), which may eventually be used to calculate national greenhouse gas inventories with the IPCC Phase III methodology. In the next five years, this project will train 12 highly qualified personnel with specialized knowledge and analytical skills that are highly desired for research positions in the environmental sciences.
蚯蚓因其对土壤肥力和作物生产的贡献而闻名。具有多年生植被的农业生态系统,例如以草和豆类为主的干草场,支持大量的蚯蚓种群,因为土壤不受耕作的干扰,并且衰老的植物残留物是蚯蚓的食物来源。在这些条件下,蚯蚓创造的结构如地表和地下排泄物(粪便颗粒)、沙丘(土壤表面的土壤-垃圾混合物)和洞穴数量众多。这些结构是微生物硝化菌和反硝化菌的有利栖息地,这些硝化菌和反硝化菌会产生氧化亚氮(一种强效温室气体),作为其新陈代谢的副产品。我的研究小组之前的实验室研究表明,蚯蚓会刺激一氧化二氮的产生,这使我推测蚯蚓与微生物的相互作用会导致小规模(微观世界、小田地)一氧化二氮的产生,并可能导致季节性一氧化二氮的排放。农业生态系统层面。这些生物相互作用将使用尖端研究工具进行评估,包括 15N 同位素稀释和 DNA 方法(amoA、nosZ 和其他相关基因的 q-PCR 扩增、DNA 稳定同位素探测)。这些先进技术极大地增加了我们发现新生物并获得对微生物介导的氮转化的新见解的机会。描述导致土壤一氧化二氮排放的蚯蚓-微生物关系的数学函数将被纳入预测生态系统水平模型(DNDC、ecosys),该模型最终可能用于通过 IPCC 第三阶段方法计算国家温室气体清单。未来五年,该项目将培养12名高素质人才,他们具备环境科学研究职位所急需的专业知识和分析技能。
项目成果
期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
专利数量(0)
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Whalen, Joann其他文献
Plant Life History and Residue Chemistry Influences Emissions of CO2 and N2O From Soil Perspectives for Genetically Modified Cell Wall Mutants
- DOI:
10.1080/07352689.2013.781455 - 发表时间:
2013-09-03 - 期刊:
- 影响因子:6.9
- 作者:
Gul, Shamim;Whalen, Joann - 通讯作者:
Whalen, Joann
Non-native anecic earthworms (Lumbricus terrestris L.) reduce seed germination and seedling survival of temperate and. boreal trees species
- DOI:
10.1016/j.apsoil.2013.11.006 - 发表时间:
2014-03-01 - 期刊:
- 影响因子:4.8
- 作者:
Drouin, Melanie;Bradley, Robert;Whalen, Joann - 通讯作者:
Whalen, Joann
Sustainable biofuel production from forestry, agricultural and waste biomass feedstocks
- DOI:
10.1016/j.apenergy.2017.05.079 - 发表时间:
2017-07-15 - 期刊:
- 影响因子:11.2
- 作者:
Whalen, Joann;Xu, Charles (Chunbao);Yan, Jinyue - 通讯作者:
Yan, Jinyue
Lignin-based hydrogel alleviates drought stress in maize
- DOI:
10.1016/j.envexpbot.2020.104055 - 发表时间:
2020-07-01 - 期刊:
- 影响因子:5.7
- 作者:
Mazloom, Najmeh;Khorassani, Reza;Whalen, Joann - 通讯作者:
Whalen, Joann
Reduced mineralizable carbon in a boreal forest soil after three years of artificial warming
- DOI:
10.4141/cjss2013-046 - 发表时间:
2013-11-01 - 期刊:
- 影响因子:1.7
- 作者:
D'Orangeville, Loiec;Cote, Benoit;Whalen, Joann - 通讯作者:
Whalen, Joann
Whalen, Joann的其他文献
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{{ truncateString('Whalen, Joann', 18)}}的其他基金
Biotic controls on the residence time of soil carbon and nitrogen: new understanding from stable isotope probing and optimization modeling
对土壤碳和氮停留时间的生物控制:稳定同位素探测和优化模型的新认识
- 批准号:
RGPIN-2017-05391 - 财政年份:2022
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Biotic controls on the residence time of soil carbon and nitrogen: new understanding from stable isotope probing and optimization modeling
对土壤碳和氮停留时间的生物控制:稳定同位素探测和优化模型的新认识
- 批准号:
RGPIN-2017-05391 - 财政年份:2021
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Biotic controls on the residence time of soil carbon and nitrogen: new understanding from stable isotope probing and optimization modeling
对土壤碳和氮停留时间的生物控制:稳定同位素探测和优化模型的新认识
- 批准号:
RGPIN-2017-05391 - 财政年份:2020
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Biotic controls on the residence time of soil carbon and nitrogen: new understanding from stable isotope probing and optimization modeling
对土壤碳和氮停留时间的生物控制:稳定同位素探测和优化模型的新认识
- 批准号:
RGPIN-2017-05391 - 财政年份:2019
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Biotic controls on the residence time of soil carbon and nitrogen: new understanding from stable isotope probing and optimization modeling
对土壤碳和氮停留时间的生物控制:稳定同位素探测和优化模型的新认识
- 批准号:
RGPIN-2017-05391 - 财政年份:2018
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Environmental micro-biosensor for detection of polycyclic aromatic hydrocarbons in soil
用于检测土壤中多环芳烃的环境微生物传感器
- 批准号:
508767-2017 - 财政年份:2017
- 资助金额:
$ 3.13万 - 项目类别:
Engage Grants Program
Biotic controls on the residence time of soil carbon and nitrogen: new understanding from stable isotope probing and optimization modeling
对土壤碳和氮停留时间的生物控制:稳定同位素探测和优化模型的新认识
- 批准号:
RGPIN-2017-05391 - 财政年份:2017
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Testing the biosilica in micro corn cob ash for sustainable concrete production
测试微玉米芯灰中的生物二氧化硅以实现可持续混凝土生产
- 批准号:
502337-2016 - 财政年份:2016
- 资助金额:
$ 3.13万 - 项目类别:
Engage Grants Program
Valorizing pelletized hen manure as a nitrogen fertilizer for northern agriculture
将颗粒状鸡粪作为北方农业氮肥的价值
- 批准号:
490967-2015 - 财政年份:2015
- 资助金额:
$ 3.13万 - 项目类别:
Engage Grants Program
Design of an innovative energy-efficient moisture monitoring and control system for low carbon fuel (LCF) in the cement industry
水泥行业低碳燃料 (LCF) 创新型节能水分监测和控制系统的设计
- 批准号:
466286-2014 - 财政年份:2014
- 资助金额:
$ 3.13万 - 项目类别:
Engage Grants Program
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相似海外基金
Earthworm-microbial interactions controlling nitrous oxide production in perennial grass- and legume- based agroecosystems using stable isotopes and molecular markers
使用稳定同位素和分子标记控制多年生草和豆类农业生态系统中一氧化二氮产生的蚯蚓-微生物相互作用
- 批准号:
238323-2010 - 财政年份:2014
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Earthworm-microbial interactions controlling nitrous oxide production in perennial grass- and legume- based agroecosystems using stable isotopes and molecular markers
使用稳定同位素和分子标记控制多年生草和豆类农业生态系统中一氧化二氮产生的蚯蚓-微生物相互作用
- 批准号:
238323-2010 - 财政年份:2013
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Earthworm-microbial interactions controlling nitrous oxide production in perennial grass- and legume- based agroecosystems using stable isotopes and molecular markers
使用稳定同位素和分子标记控制多年生草和豆类农业生态系统中一氧化二氮产生的蚯蚓-微生物相互作用
- 批准号:
238323-2010 - 财政年份:2012
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual
Earthworm-microbial interactions controlling nitrous oxide production in perennial grass- and legume- based agroecosystems using stable isotopes and molecular markers
使用稳定同位素和分子标记控制多年生草和豆类农业生态系统中一氧化二氮产生的蚯蚓-微生物相互作用
- 批准号:
396084-2010 - 财政年份:2012
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
Earthworm-microbial interactions controlling nitrous oxide production in perennial grass- and legume- based agroecosystems using stable isotopes and molecular markers
使用稳定同位素和分子标记控制多年生草和豆类农业生态系统中一氧化二氮产生的蚯蚓-微生物相互作用
- 批准号:
238323-2010 - 财政年份:2011
- 资助金额:
$ 3.13万 - 项目类别:
Discovery Grants Program - Individual