Short-circuiting the terrestrial phosphorus cycle: symbiotic control of organic phosphorus mineralisation and uptake
缩短陆地磷循环:有机磷矿化和吸收的共生控制
基本信息
- 批准号:NE/W000350/1
- 负责人:
- 金额:$ 84.38万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2022
- 资助国家:英国
- 起止时间:2022 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Plants need to take up phosphorus from soil to grow. To do this, it has been assumed for decades that plants can only access mineral (inorganic) forms of phosphorus from soil, and indeed these mineral forms are the basis of most fertilisers. Inorganic phosphorus is largely created in soil through microbial conversion of organic forms, which usually comprise the main pool of phosphorus in soils. This so-called 'mineralisation' process is also assumed to be largely undertaken by free-living soil microorganisms. However, our recent discoveries from NERC-funded research suggest that trees that form intimate relationships with soil fungi (called ectomycorrhizal fungi) on their roots can acquire phosphorus from both organic and inorganic forms. These findings raise questions of global importance that challenge our entrenched understanding of the terrestrial phosphorus cycle: 1. Can plants, via their symbiotic root-associated ectomycorrhizal fungi, acquire organic forms of phosphorus directly, i.e. keeping the chemical intact, thus 'short-circuiting' the conventional mineralisation pathway? 2. Can ectomycorrhizal fungi accelerate mineralisation of organic phosphorus? 3. What happens when the demand for phosphorus increases, for example because of nitrogen pollution from the atmosphere? The potential to acquire organic forms of phosphorus would give plants that form associations with ectomycorrhizal fungi access to otherwise inaccessible pools of nutrients in soil. These mechanisms of phosphorus acquisition may also provide explanations as to why plants that form different types of associations on their roots can coexist. The findings may also explain how plant communities may respond to increasing phosphorus limitation of ecosystems that is occurring as a consequence of atmospheric nitrogen pollution. We are now able to address these questions through recent developments in the synthesis of isotopically-labelled organic forms of phosphorus. In this proposal, we will therefore synthesise a suite of ecologically-relevant organic forms of phosphorus that have a radioactive tag attached to them to enable us to visualise and measure the movement and breakdown of these chemicals. We will test the hypotheses that i) ectomycorrhizal fungi acquire organic forms directly and transfer these nutrients to plants, ii) ectomycorrhizal plants acquire phosphorus from organic forms by accelerating their mineralisation, and iii) these processes are stimulated in systems that are strongly limited by phosphorus as a consequence of sustained inputs of nitrogen. Our work will have major impact on understanding biogeochemical cycles in woodlands and forests that are dominated by ectomycorrhizal trees, and how niche partitioning of phosphorus may explain coexistence of mycorrhizal types.
植物需要从土壤中吸收磷才能生长。为了做到这一点,几十年来人们一直认为植物只能从土壤中获得无机形式的磷,事实上,这些无机形式是大多数肥料的基础。土壤中无机磷主要是通过微生物转化有机态而产生的,有机态磷通常构成土壤中磷的主要库。这种所谓的“矿化”过程也被认为主要是由自由生活的土壤微生物进行的。然而,我们最近从NERC资助的研究中发现,与根部土壤真菌(称为外生菌根真菌)形成密切关系的树木可以从有机和无机形式中获得磷。这些发现提出了具有全球重要性的问题,挑战了我们对陆地磷循环的根深蒂固的理解:植物能否通过与根共生的外生菌根真菌直接获得有机形式的磷,即保持化学物质的完整性,从而“短路”传统的矿化途径?2.外生菌根真菌能促进有机磷矿化吗?3.当对磷的需求增加时会发生什么,例如由于大气中的氮污染?获得有机形式磷的潜力将使与外生菌根真菌形成联系的植物能够获得否则无法获得的土壤中的营养库。这些磷的获取机制也可以解释为什么植物在其根部形成不同类型的协会可以共存。这些发现还可以解释植物群落如何应对由于大气氮污染而导致的生态系统磷限制的增加。我们现在能够解决这些问题,通过最近的发展,在合成同位素标记的有机形式的磷。因此,在这项提案中,我们将合成一套与生态相关的有机形式的磷,这些磷带有放射性标签,使我们能够可视化和测量这些化学物质的运动和分解。我们将测试的假设,i)外生菌根真菌直接获得有机形式和转移这些营养物质的植物,ii)外生菌根植物获得磷的有机形式,通过加速其矿化,和iii)这些过程中受到强烈限制的系统,作为一个结果,持续输入氮磷刺激。我们的工作将有重大的影响,了解土壤地球化学循环的林地和森林为主的外生菌根树木,以及如何生态位分配的磷可以解释共存的菌根类型。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Crystal Structure and Enzymology of Solanum tuberosum Inositol Tris/Tetrakisphosphate Kinase 1 (StITPK1).
- DOI:10.1021/acs.biochem.3c00404
- 发表时间:2024-01-02
- 期刊:
- 影响因子:2.9
- 作者:Whitfield, Hayley L.;Rodriguez, Raquel Faba;Shipton, Megan L.;Li, Arthur W. H.;Riley, Andrew M.;Potter, Barry V. L.;Hemmings, Andrew M.;Brearley, Charles A.
- 通讯作者:Brearley, Charles A.
Characterisation of a soil MINPP phytase with remarkable long-term stability and activity from Acinetobacter sp.
具有显着的长期稳定性和活性的土壤MINPP植物酶的表征。
- DOI:10.1371/journal.pone.0272015
- 发表时间:2022
- 期刊:
- 影响因子:3.7
- 作者:Rix, Gregory D.;Sprigg, Colleen;Whitfield, Hayley;Hemmings, Andrew M.;Todd, Jonathan D.;Brearley, Charles A.
- 通讯作者:Brearley, Charles A.
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David Johnson其他文献
Developing a performance evaluation mechanism for Portuguese marine spatial planning using a participatory approach
采用参与式方法制定葡萄牙海洋空间规划绩效评估机制
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Maria Adelaide Ferreira;David Johnson;C. Silva;T. B. Ramos - 通讯作者:
T. B. Ramos
Prevention of Progression of Kidney Disease: Exercise
预防肾脏疾病进展:运动
- DOI:
10.1111/j.1440-1797.2006.00605.x - 发表时间:
2006 - 期刊:
- 影响因子:2.5
- 作者:
David Johnson - 通讯作者:
David Johnson
Assessing the Effectiveness of SNAP By Examining Extramarginal Participants
通过检查超边际参与者来评估 SNAP 的有效性
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
David Johnson - 通讯作者:
David Johnson
Ambiguity in Performance Pay: An Online Experiment
绩效工资的模糊性:在线实验
- DOI:
10.2139/ssrn.2268633 - 发表时间:
2013 - 期刊:
- 影响因子:0
- 作者:
D. Cooper;David Johnson - 通讯作者:
David Johnson
Analysis of 10 metabolites of polymethoxyflavones with high sensitivity by electrochemical detection in high-performance liquid chromatography
高效液相色谱电化学检测高灵敏度分析多甲氧基黄酮10种代谢物
- DOI:
10.1021/jf505545x - 发表时间:
2015 - 期刊:
- 影响因子:6.1
- 作者:
Jinkai Zheng;Jinfeng Bi;David Johnson;Yue Sun;Mingyue Song;Peiju Qiu;Ping Dong;Eric Decker;Hang Xiao - 通讯作者:
Hang Xiao
David Johnson的其他文献
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{{ truncateString('David Johnson', 18)}}的其他基金
European Partnering Award: Harnessing root-fungal symbioses for sustainable agri-ecosystems
欧洲合作奖:利用根真菌共生实现可持续农业生态系统
- 批准号:
BB/X018210/1 - 财政年份:2023
- 资助金额:
$ 84.38万 - 项目类别:
Research Grant
CAREER: Risk-Based Methods for Robust, Adaptive, and Equitable Flood Risk Management in a Changing Climate
职业:在气候变化中实现稳健、适应性和公平的洪水风险管理的基于风险的方法
- 批准号:
2238060 - 财政年份:2023
- 资助金额:
$ 84.38万 - 项目类别:
Standard Grant
Functioning of soil food webs in response to woodland expansion
土壤食物网的功能响应林地扩张
- 批准号:
NE/X011135/1 - 财政年份:2023
- 资助金额:
$ 84.38万 - 项目类别:
Research Grant
Collaborative Research: Exploring thermionic multiple barrier heterostructures and thermoelectric energy conversion using 2D layered heterostructures
合作研究:利用二维层状异质结构探索热离子多重势垒异质结构和热电能量转换
- 批准号:
2323032 - 财政年份:2023
- 资助金额:
$ 84.38万 - 项目类别:
Standard Grant
Synthesis and Properties of Heterostructures Containing Magnetic 2d Layers Not Found As Bulk Compounds
含有未发现为本体化合物的磁性二维层的异质结构的合成和性能
- 批准号:
2219512 - 财政年份:2022
- 资助金额:
$ 84.38万 - 项目类别:
Standard Grant
SAI-R: Reducing Natural Hazards Risks by Incorporating Community Impacts and Equity
SAI-R:通过纳入社区影响和公平来减少自然灾害风险
- 批准号:
2228559 - 财政年份:2022
- 资助金额:
$ 84.38万 - 项目类别:
Standard Grant
21EJP SOIL: SymbiOtIc soLutions for HEalthy Agricultural Landscapes (SOIL HEAL)
21EJP SOIL:健康农业景观的共生解决方案(土壤修复)
- 批准号:
BB/X000729/1 - 财政年份:2022
- 资助金额:
$ 84.38万 - 项目类别:
Research Grant
Maximising ecosystem services in urban environments (MEaSURE)
最大化城市环境中的生态系统服务(MEaSURE)
- 批准号:
NE/W003120/1 - 财政年份:2021
- 资助金额:
$ 84.38万 - 项目类别:
Research Grant
Collaborative Research: Understanding Cross-plane and In-plane Transport in 2D Layered Heterostructures
合作研究:了解二维层状异质结构中的跨平面和面内传输
- 批准号:
1905185 - 财政年份:2019
- 资助金额:
$ 84.38万 - 项目类别:
Standard Grant
Disentangling mechanisms of co-adaptation between trees and soil food webs in response to environmental perturbations
解开树木和土壤食物网响应环境扰动的共同适应机制
- 批准号:
NE/S002189/1 - 财政年份:2019
- 资助金额:
$ 84.38万 - 项目类别:
Research Grant
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