Oxalate Carbonate Pathway—Conversion and Fixation of Soil Carbon—A Potential Scenario for Sustainability

Syed, Shameer; Buddolla, Viswanath; Lian, Bin

doi:10.3389/fpls.2020.591297

Cited by 22 publications

(16 citation statements)

References 72 publications

(73 reference statements)

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“…In comparison, the carbon and oxygen have peak intensity values corresponding to the hyphae’s location which is at a ratio of ∼2:1 oxygen:carbon. This is evidence of oxalate/oxalic acid 23 which we attribute to either (1) deposited particulate from the atmosphere or (2) previously aqueous phase minerals which have nucleated onto the hyphae in the high vacuum conditions of the SEM chamber. Several such particles are clearly present in the SEM image.…”

Section: Resultsmentioning

confidence: 75%

Association of Chemical Aggregates and Fungal Moieties Affecting Native Environmental Films

DeYoung

Shaw

2022

ACS Environ. Au

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Fungi are prevalent microorganisms in environmental films. Their impacts on the film chemical environment and morphology remains poorly defined. Here we present microscopic and chemical analyses fungi impacts to environmental films over long- and short-time scales. We report bulk properties of films accumulated for 2 months (February and March 2019) and 12 months to contrast short and longer-term effects. Bright field microscopy results show that fungi and fungal-associated aggregates cover close to 14% of the surface after 12 months and include significant numbers of large (tens to hundreds of μm in diameter) particles aggregated with fungal colonies. Data acquired for films accumulated over shorter times (2 months) suggest mechanisms that contribute to these longer-term effects. This is important because the film’s exposed surface will determine what additional material will accumulate over the ensuing weeks or months. A combination of scanning electron microscopy and energy dispersive X-ray spectroscopy provides spatially resolved maps of fugal hypha and nearby elements of interest. We also identify a “nutrient pool” associated with the fungal hypha which extend orthogonally to the growth direction to ca. 50 μm distances. We conclude that fungi have both short-term and long-term effects on the chemistry and morphology of environmental film surfaces. In short, the presence (or absence) of fungi will significantly alter the films’ evolution and should be considered when analyzing environmental film impacts on local processes.

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Section: Resultsmentioning

confidence: 75%

Association of Chemical Aggregates and Fungal Moieties Affecting Native Environmental Films

DeYoung

Shaw

2022

ACS Environ. Au

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“…In addition, together with Ca, oxalate is also expected to help mitigate greenhouse gas emissions in agriculture, as revealed by Syed et al. (2020), oxalate, which is present in high levels in olive fruits, can act as a CO 2 sink through the oxalate‐carbonate pathway.…”

Section: Discussionmentioning

confidence: 97%

Effect of olive‐processing technology on the utilization of olive mill pomace as a soil amendment

et al. 2023

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In the Mediterranean basin, the treatment and disposal of olive mill pomace (OMP) remain a salient environmental issue for the olive oil‐producing industry. This study assesses the effects of olive‐processing technology (three‐phase and two‐phase systems) on the potential use of OMP as a soil amendment. Samples from 12 Croatian olive mills were analyzed for their total phenolic content (TPC), residual oil fraction, and elemental concentration. The samples were profiled using Fourier transform infrared spectroscopy (FT‐IR) and structurally characterized using scanning electron microscopy‐energy‐dispersive X‐ray spectroscopy (EDS). Compared to three‐phase samples, two‐phase OMP was more acidic (pH 4.5 vs. 5.0), with a higher TPC (3835 vs. 1576 mg/kg fresh weight), oil content (11.7% vs. 7.5% d.w., where d.w. is dry weight), electrical conductivity (EC, 5.1 vs. 3.0 mS/cm), and levels of calcium (Ca, 1.34 vs. 1.20 g/kg d.w.) and copper (Cu, 10.4 vs. 7.0 mg/kg d.w.). Similar values of carbon/nitrogen (C/N; 61 vs. 72), N (10 vs. 8.1 g/kg d.w.), phosphorus (1040 vs. 691 mg/kg d.w.), and potassium (K, 13.7 vs. 8.1 g/kg d.w.) were observed. The amounts of chromium, copper, nickel, and zinc were below EC limits in both cases. The EDS mapping revealed that Ca was concentrated at sharp‐edged OMP particles while K was evenly distributed, suggesting that pelletized OMP compost is preferable for amending soil to obtain a homogeneous distribution of nutrients. It was also possible to distinguish between OMPs based on oil and lignin absorption bands in their FT‐IR spectra. According to the obtained results, composting is recommended for both types of OMP to produce a safe product for amendment purposes.

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“…Infection by other phytopathogens was also facilitated by higher oxalate levels and by exogenously applied oxalate [ 38 , 39 , 40 , 41 , 42 ]. Moreover, high oxalate amounts change the physicochemical properties of the soil, which may influence adjacent crops [ 43 ].…”

Section: Biological Control Of Abutilon Theophrasti ...mentioning

confidence: 99%

Abutilon theophrasti’s Resilience against Allelochemical-Based Weed Management in Sustainable Agriculture – Due to Collection of Highly Advantageous Microorganisms?

Tabaglio

Fiorini

Sterling

et al. 2023

Plants

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Abutilon theophrasti Medik. (velvetleaf) is a problematic annual weed in field crops which has invaded many temperate parts of the world. Since the loss of crop yields can be extensive, approaches to manage the weed include not only conventional methods, but also biological methods, for instance by microorganisms releasing phytotoxins and plant-derived allelochemicals. Additionally, benzoxazinoid-rich rye mulches effective in managing common weeds like Amaranthus retroflexus L. have been tested for this purpose. However, recent methods for biological control are still unreliable in terms of intensity and duration. Rye mulches were also ineffective in managing velvetleaf. In this review, we present the attempts to reduce velvetleaf infestation by biological methods and discuss possible reasons for the failure. The resilience of velvetleaf may be due to the extraordinary capacity of the plant to collect, for its own survival, the most suitable microorganisms from a given farming site, genetic and epigenetic adaptations, and a high stress memory. Such properties may have developed together with other advantageous abilities during selection by humans when the plant was used as a crop. Rewilding could be responsible for improving the microbiomes of A. theophrasti.

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Oxalate Carbonate Pathway—Conversion and Fixation of Soil Carbon—A Potential Scenario for Sustainability

Cited by 22 publications

References 72 publications

Association of Chemical Aggregates and Fungal Moieties Affecting Native Environmental Films

Association of Chemical Aggregates and Fungal Moieties Affecting Native Environmental Films

Effect of olive‐processing technology on the utilization of olive mill pomace as a soil amendment

Abutilon theophrasti’s Resilience against Allelochemical-Based Weed Management in Sustainable Agriculture – Due to Collection of Highly Advantageous Microorganisms?

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