Metabolite-driven mechanisms reveal chemical ecology of Lehmann Lovegrass (Eragrostis lehmanniana) invasion in North American semi-arid ecosystems DOI Creative Commons
Ben Yang,

M. K. Crawford,

Taylor A. Portman

и другие.

Communications Biology, Год журнала: 2025, Номер 8(1)

Опубликована: Март 4, 2025

Invasive plants threaten global ecosystems, yet traditional analyses of functional traits cannot fully explain their dominance over co-occurring natives. Metabolomics offers insights into plant invasions, but single-technique studies often miss critical biochemical mechanisms. We employ a multimodal metabolomics approach (¹H NMR, LC MS/MS, FT-ICR-MS, and MALDI-MSI) to investigate the basis Lehmann lovegrass (Eragrostis lehmanniana) invasion in semi-arid North America, comparing it with native grass, Arizona cottontop (Digitaria californica). Our analysis reveals three metabolomic compared cottontop: Enhanced nitrogen allocation shoots, reduced defensive metabolites root layers; increased exudate modulation under stress conditions. These suggest succeeds through adaptation increasing aridity rather than direct competition, demonstrating nutrient-poor environments high phenotypic plasticity response aridity. This integrated provides new mechanistic ecology environmental change.

Язык: Английский

Advances in Molecular and Microscale Characterization of Soil Organic Matter: Current Limitations and Future Prospects DOI

Jitao Lv,

Zaoquan Huang,

Lei Luo

и другие.

Environmental Science & Technology, Год журнала: 2022, Номер 56(18), С. 12793 - 12810

Опубликована: Авг. 29, 2022

Soil organic matter (SOM) comprises a continuum of materials from granular debris to small molecules and contains more carbon than global vegetation the atmosphere combined. It has remarkable effects on soil ecological functions cycle as well fate pollutants in terrestrial ecosystem. Therefore, characterization SOM is an important topic science, ecology, environmental science. Chemical complexity spatial heterogeneity are by far two biggest challenges our understanding SOM. Recent developments analytical techniques methods provide opportunity reveal composition at molecular level observe its distribution soils micro- nanoscales, which have greatly improved This paper reviews outstanding advances regarding these issues target nontarget analyses comprising marker analysis, ultrahigh-resolution mass spectrometry situ microscopic imaging such synchrotron-based spectromicroscopy, nanoscale secondary ion spectrometry, emerging electron optical techniques. However, current remain unlocking unknown properties We systematically point out limitations technologies outline future prospects for comprehensive paying particular attention concern.

Язык: Английский

Процитировано

44
Application of Fourier transform ion cyclotron resonance mass spectrometry in molecular characterization of dissolved organic matter DOI
Chen He, Ding He, Chunmao Chen

и другие.

Science China Earth Sciences, Год журнала: 2022, Номер 65(12), С. 2219 - 2236

Опубликована: Сен. 28, 2022

Язык: Английский

Процитировано

42
Fluorescence and molecular signatures of dissolved organic matter to monitor and assess its multiple sources from a polluted river in the farming-pastoral ecotone of northern China DOI
Jinfeng Ge, Yulin Qi, Cai Li

и другие.

The Science of The Total Environment, Год журнала: 2022, Номер 837, С. 154575 - 154575

Опубликована: Март 15, 2022

Язык: Английский

Процитировано

41
Transformation of dissolved organic matter in landfill leachate during a membrane bioreactor treatment DOI
Zhepei Gu,

Min Bao,

Chen He

и другие.

The Science of The Total Environment, Год журнала: 2022, Номер 856, С. 159066 - 159066

Опубликована: Сен. 26, 2022

Язык: Английский

Процитировано

41
Practical Guide to Measuring Wetland Carbon Pools and Fluxes DOI Creative Commons
Sheel Bansal, Irena F. Creed, Brian A. Tangen

и другие.

Wetlands, Год журнала: 2023, Номер 43(8)

Опубликована: Ноя. 28, 2023

Abstract Wetlands cover a small portion of the world, but have disproportionate influence on global carbon (C) sequestration, dioxide and methane emissions, aquatic C fluxes. However, underlying biogeochemical processes that affect wetland pools fluxes are complex dynamic, making measurements challenging. Over decades research, many observational, experimental, analytical approaches been developed to understand quantify C. Sampling range in their representation from short long timeframes local landscape spatial scales. This review summarizes common cutting-edge methodological for quantifying We first define each major provide rationale importance dynamics. For approach, we clarify what component is measured its temporal representativeness constraints. describe practical considerations such as where when an approach typically used, who can conduct (expertise, training requirements), how conducted, including equipment complexity costs. Finally, key covariates ancillary enhance interpretation findings facilitate model development. The protocols measure soil, water, vegetation, gases also relevant related disciplines ecology. Improved quality consistency data collection reporting across studies will help reduce uncertainties develop management strategies use wetlands nature-based climate solutions.

Язык: Английский

Процитировано

37
Molecular composition and chemodiversity of dissolved organic matter in wastewater sludge via Fourier transform ion cyclotron resonance mass spectrometry: Effects of extraction methods and electrospray ionization modes DOI

Peipei Zhao,

Zhengliang Du,

Qing‐Long Fu

и другие.

Water Research, Год журнала: 2023, Номер 232, С. 119687 - 119687

Опубликована: Фев. 1, 2023

Язык: Английский

Процитировано

34
Complementary Elucidation of the Molecular Characteristics of Groundwater Dissolved Organic Matter Using Ultrahigh-Resolution Mass Spectrometry Coupled with Negative- and Positive-Ion Electrospray Ionization DOI
Ziqi Zhou, Qing‐Long Fu, Manabu Fujii

и другие.

Environmental Science & Technology, Год журнала: 2023, Номер 57(11), С. 4690 - 4700

Опубликована: Март 11, 2023

The formula assignment of the Fourier transform ion cyclotron resonance mass spectrometry coupled with positive-ion electrospray ionization [ESI(+)-FT-ICR MS] is challenging because extensive occurrence adducts. However, there a paucity automated methods for ESI(+)-FT-ICR MS spectra. novel algorithm spectra developed herein has been applied to elucidate composition dissolved organic matter (DOM) in groundwater during air-induced ferrous [Fe(II)] oxidation. DOM were profoundly impacted by [M + Na]+ adducts and, lesser extent, K]+ Oxygen-poor and N-containing compounds frequently detected when FT-ICR was operated ESI(+) mode, while components higher carbon oxidation states preferentially ionized negative-ion [ESI(−)] mode. Values difference between double-bond equivalents number oxygen atoms from −13 13 are proposed aquatic DOM. Furthermore, first time, Fe(II)-mediated formation highly toxic iodine species reported rich Fe(II), iodide, results this study not only shed light on further development comprehensive characterization ESI(−)-FT-ICR but also highlight importance appropriate treatment specific prior use.

Язык: Английский

Процитировано

31
New insights into the mechanism of phosphate release during particulate organic matter photodegradation based on optical and molecular signatures DOI

Minli Guo,

Xiaolu Li, Yi Wang

и другие.

Water Research, Год журнала: 2023, Номер 236, С. 119954 - 119954

Опубликована: Апрель 8, 2023

Язык: Английский

Процитировано

29
Probing Molecular-Level Dynamic Interactions of Dissolved Organic Matter with Iron Oxyhydroxide via a Coupled Microfluidic Reactor and an Online High-Resolution Mass Spectrometry System DOI
Xiangyu Zhu, Kun Wang, Zhengzheng Liu

и другие.

Environmental Science & Technology, Год журнала: 2023, Номер 57(7), С. 2981 - 2991

Опубликована: Фев. 7, 2023

The interactions between dissolved organic matter (DOM) and iron (Fe) oxyhydroxide are crucial in regulating the biogeochemical cycling of nutrients elements, including preservation carbon soils. mechanisms DOM molecular assembly on mineral surfaces have been extensively studied at mesoscale with equilibrium experiments, yet molecular-level evolution DOM-mineral interface under dynamic interaction conditions is not fully understood. Here, we designed a microfluidic reactor coupled an online solid phase extraction (SPE)-LC-QTOF MS system to continually monitor changes composition during flowing contact Fe circumneutral pH, which simulates soil minerals interacting constant input. Time-series UV-visible absorption spectra mass spectrometry data showed that after aromatic moieties were first preferentially sequestered by pristine surface, adsorption nonaromatic molecules greater hydrophobicity, lower acidity, weights (<400) from new solutions was favored. This accompanied transition surface chemistry-dominated organic-organic interaction-dominated adsorption. These findings provide direct evidence zonal model taking dynamics interfacial into consideration. study also shows microfluidics high-resolution (HRMS) promising experimental platform for probing microscale environmental integrating situ reactions, sample pretreatment, automatic analysis.

Язык: Английский

Процитировано

25
“Reactive Mineral Sink” drives soil organic matter dynamics and stabilization DOI Creative Commons
Songlin Wu, Kurt O. Konhauser, Baodong Chen

и другие.

npj Materials Sustainability, Год журнала: 2023, Номер 1(1)

Опубликована: Ноя. 27, 2023

Abstract Reactive primary and secondary minerals play a critical role in the transformation stabilization of organic matter (OM) soil, aspect that has been largely overlooked existing literature. In this regard, we propose new model known as “reactive mineral sink” (RMS) to illustrate three mechanisms through which these drive bioprocessing, transformation, transport OM soil. Firstly, from biological perspective, reactive influence enzymatic microbial processing binding proteins or influencing structure communities. Secondly, chemical standpoint, have capacity adsorb and/or coprecipitate with it, leading more diverse distribution This distribution, turn, triggers catalysis redox reactions. Thirdly, on physical level, substantial impact soil architecture, aggregate dynamics, porosity development, hydrological processes. These changes then affect transport, reprocessing OM. The RMS provides conceptual framework underscores fundamental driving dynamics carbon (C) sequestration natural Furthermore, it promotes restoration biogeochemical processes ecological resilience. We advocate for implementation strategies based enhance C soils purposes rejuvenating health mitigating CO 2 emission.

Язык: Английский

Процитировано

25