Degradation of lipids in seasonal hypoxic seawater under different oxygen saturation

He, Yunhong; Sun, Chengjun; Li, Wenjuan; Yang, Gui‐Peng; Ding, Haiyang

doi:10.1007/s00343-018-7110-0

Cited by 3 publications

(2 citation statements)

References 52 publications

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“…Phosphatidylcholine (PC) (e.g., C42, C44, C46) and diglyceride (DAG) (e.g., C31, C35, C37, C39, C41, C43, C47) lipids accounted for 39.4% and 26.0% of the lipids in GOF, respectively, whereas DAGs (e.g., C33, C35, C37, C39, C41, C43, C47) showed a higher classification proportion (53.9%) in LFF (Figure 2). Our data also revealed that the majority of DAGs in both LFF and GOF contained highly polyunsaturated fatty acids (e.g., 30:4, 32:3, 34:5, 40:9, 44:12), which could be more susceptible to microbial degradation in the soil than saturated fatty acid molecules [24]. Conversely, PC lipids containing N and P identified in GOF may degrade and release essential elements rather slowly due to its long-chain structure and the relatively high degree of fatty acid saturation.…”

Section: Lipidomicssupporting

confidence: 53%

Identification and characterization of proteins, lipids, and metabolites in two organic fertilizer products derived from different nutrient sources

Zhao

Bailey

et al. 2021

Appl Biol Chem

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The biochemical composition of organic fertilizers largely determines their nutrient supply characteristics following soil application as well as their potential impact on soil microbial communities. Yet, limited information is available regarding the biochemical composition of organic fertilizers derived from different nutrient sources. Here, we qualitatively analyzed the presence and abundance of proteins, lipids, and metabolites in a liquid fish fertilizer (LFF) product and a type of granular organic fertilizer (GOF) commonly used in organic vegetable production, using liquid chromatography–tandem mass spectrometry (LC–MS/MS). Our results suggest that the presence and abundance of proteins, lipids, and metabolites differ greatly between GOF and LFF. The qualitative analysis shows LFF as a rich source of metabolites, while complex proteins and long-chain saturated fatty acids are dominant in GOF. The degree of biochemical composition complexity may help explain the varying impacts of different types of organic fertilizers on nutrient availability, soil health, and environmental quality.

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Section: Lipidomicssupporting

confidence: 53%

Identification and characterization of proteins, lipids, and metabolites in two organic fertilizer products derived from different nutrient sources

Zhao

Bailey

et al. 2021

Appl Biol Chem

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“…For example, we assume lifetimes of lipids and proteins based on literature values . Depending on the conditions, the decay rate can vary significantly as presented by Duffy and colleagues for proteins and He et al reported decay rates under hypoxic conditions . There are limitations with that assumption because we know from the literature that lipids, proteins, and carbohydrates are broken down at different rates, and future work will have to refine and improve our model as more data is published.…”

Section: Introductionmentioning

confidence: 99%

Carbon on the Ocean Surface: Temporal and Geographical Investigation

Enders

Elliott

Allen

2023

ACS Earth Space Chem.

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The sea surface nanolayer (SSnL) is enriched with lipids and proteins; working together, these macromolecules create a unique region between the atmosphere and ocean. Lipids and proteins affect the ocean’s surface chemistry, which causes surface tension suppression. Carbon enrichment is ultimately reflected in organic sea spray aerosols and wave damping mechanisms that impact micrometeorology. In the present work, we calculate and examine carbon in the SSnL with a global analysis of carbon that incorporates organic surfactant dynamics. Our carbon estimates are based on chlorophyll distributions deduced from Energy Exascale Earth System Model output data. We assume that chlorophyll can approximate phytoplankton and that phytoplankton are primary contributors to the dissolved organic carbon (DOC) pool. The model calculates the carbon concentration from phytoplankton and zooplankton concentrations, fits a Langmuir isotherm to determine fractional surface coverage, and converts from the fractional coverage to a mass using surface excess to estimate carbon in the SSnL. Organic geochemical diversity of the ocean surface is evidenced by monthly variability and global differences among carbon averages. The model is an estimation of carbon because of the limited data for carbohydrate co-adsorption and molecular behavior of the DOC and particulate organic carbon (POC) pool, but our results can be used as a benchmark throughout future works. Our results reveal large seasonal shifts across the major biomes and among regional interfacial totals. However, the total mass of ∼10–4 gigatons does not change significantly throughout the year. We propose based on our results that adsorptive equilibria control the organic content of the nanolayer. To the best of our knowledge, these calculations constitute the first example of SSnL organic carbon integrations performed on a planetary scale.

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The Development of a Floating Mono-Particle “Sun Shield” to Protect Corals from High Irradiance during Bleaching Conditions

Scofield,

Prime,

Flores

et al. 2024

JMSE

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Coral bleaching is occurring more frequently as the climate changes, with multiple mass mortality events recently recorded on the Great Barrier Reef. Thermal stress coupled with high irradiance have previously been shown to be primary causes for coral bleaching. Therefore, a reduction in either of these pressures could reduce coral stress and eventual bleaching. Herein, we report the early development of a novel technology capable of reducing the amount of light entering a water body by ~20% in open ocean conditions. This mono-particle “sun shield” consists of an ultra-thin monolayer material and reflective calcium carbonate particles. The monolayer enables spreading of the particles into a thin film across the water surface, with only small amounts of material needed: 7.1 g/m2. A numerical modelling case study of residence times and the build-up of reactive oxygen stress in corals showed that the successful application of a stable film over the Lizard Island reef flat could reduce the reactive oxygen stress to below bleaching levels across approximately 1.5 km2 of reef area. With further development, mono-particle films such as this have the potential to be deployed over at-risk coral reefs at relatively small scales during predicted heatwave conditions, potentially reducing the severity of bleaching on coral reefs.

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Degradation of lipids in seasonal hypoxic seawater under different oxygen saturation

Cited by 3 publications

References 52 publications

Identification and characterization of proteins, lipids, and metabolites in two organic fertilizer products derived from different nutrient sources

Identification and characterization of proteins, lipids, and metabolites in two organic fertilizer products derived from different nutrient sources

Carbon on the Ocean Surface: Temporal and Geographical Investigation

The Development of a Floating Mono-Particle “Sun Shield” to Protect Corals from High Irradiance during Bleaching Conditions

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