Short-Term Warming Induces Cyanobacterial Blooms and Antibiotic Resistance in Freshwater Lake, as Revealed by Metagenomics Analysis

Water, Год журнала: 2024, Номер 16(18), С. 2655 - 2655

Опубликована: Сен. 18, 2024

Climate change threatens freshwater ecosystems, potentially intensifying cyanobacterial blooms and antibiotic resistance. We investigated these risks in Cosseys Reservoir, New Zealand, using short-term warming simulations (22 °C, 24 27 °C) with additional oxidative stress treatments. A metagenomic analysis revealed significant community shifts under warming. The abundance increased from 6.11% to 20.53% at Microcystaceae Nostocaceae proliferating considerably. microcystin synthesis gene (mcy) cluster showed a strong association abundance. Cyanobacteria exhibited enhanced nutrient acquisition (pstS gene) an upregulated nitrogen metabolism Concurrently, resistance genes (ARGs) increased, particularly multidrug (50.82% of total ARGs). co-association network identified the key antibiotic-resistant bacteria (e.g., Streptococcus pneumoniae Acinetobacter baylyi) ARGs acrB, MexK, rpoB2, bacA) central dissemination conditions. Oxidative exacerbated both growth ARGs’ proliferation, especially efflux pump adeJ, ceoB, emrB, muxB). This study demonstrated that even modest (2–5 could promote toxic cyanobacteria These findings underscore synergistic effects temperature posed by climate on water quality public health, emphasizing need for targeted management strategies ecosystems. Future research should focus long-term impacts potential mitigation measures.

Язык: Английский

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Cyanobacterial blooms management: A simulation-based optimization method

Journal of Environmental Management, Год журнала: 2024, Номер 370, С. 122639 - 122639

Опубликована: Сен. 26, 2024

Язык: Английский

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Food Webs and Feedbacks: The Untold Ecological Relevance of Antimicrobial Resistance as Seen in Harmful Algal Blooms

Microorganisms, Год журнала: 2024, Номер 12(11), С. 2121 - 2121

Опубликована: Окт. 23, 2024

Antimicrobial resistance (AMR) has long been framed as an epidemiological and public health concern. Its impacts on the environment are unclear. Yet, basis for AMR is altered cell physiology. Just this affects how microbes interact with antimicrobials, it can also affect they their own species, other non-living environment. Moreover, if globally notorious causing landscape-level environmental issues, then these effects could alter biodiversity ecosystem function a grand scale. To investigate possibilities, we compiled peer-reviewed literature from past 20 years regarding in toxic freshwater cyanobacterial harmful algal blooms (HABs). We examined evidence of affecting HAB frequency, severity, or persistence. Although no study within our scope was explicitly designed to address question, multiple studies reported AMR-associated changes HAB-forming cyanobacteria (and co-occurring microbes) that pertained directly timing, toxicity, phase, well dynamics HAB-afflicted aquatic food webs. These findings highlight potential have far-reaching (including loss function) bring into focus importance confronting complex interrelated issues such HABs concert, interdisciplinary tools perspectives.

Язык: Английский

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Unveiling Aquatic Organism Health Through eProteins: A Contemporary Perspective

Research Ideas and Outcomes, Год журнала: 2024, Номер 10

Опубликована: Окт. 31, 2024

Environmental DNA (eDNA) analysis has transformed our understanding of aquatic ecosystems, but traditional methods often lack insights into organismal health. The emerging field environmental protein (eProtein) offers a novel approach to monitoring the physiological status organisms. Recent advancements in proteomic technologies have enabled detection and characterization stress-responsive proteins water samples, providing valuable health stressors. This perspective paper explores potential eProtein for organism health, disease dynamics reproductive cycles. Methodological extraction mass spectrometry enhanced sensitivity specificity analysis, facilitating comprehensive molecular profiling biomarker identification. By integrating aquaculture management monitoring, researchers can proactively manage fish mitigate outbreaks safeguard ecosystems. Future research directions include refining methods, establishing standardized protocols leveraging interdisciplinary collaborations maximize conservation.

Язык: Английский

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Perborate Activated Peroxymonosulfate Process for Improving the Coagulation Efficiency of Microcystis aeruginosa by Polymeric Aluminum Chloride

Molecules, Год журнала: 2024, Номер 29(22), С. 5352 - 5352

Опубликована: Ноя. 14, 2024

In this study, the sodium perborate (SP)-activated peroxymonosulfate (PMS) process was used to enhance coagulation efficiency of cyanobacteria with polymeric aluminum chloride (PAC), aiming efficiently mitigate impact algal blooms on safety drinking water production. The optimal concentrations SP, PMS, and PAC were determined by evaluating removal rate OD680 zeta potential algae. Experimental results demonstrated that proposed ternary PMS/SP/PAC achieved a remarkable 95.2%, significantly surpassing those obtained from individual treatments PMS (19.5%), SP (5.2%), (42.1%), as well combined PMS/PAC (55.7%) PMS/SP (28%). synergistic effect led enhanced aggregation cells due substantial reduction in their potential. Flow cytometry performed investigate cell integrity before after treatment PMS/SP/PAC. Disinfection by-products (DBPs) (sodium hypochlorite disinfection) algae-laden subsequent declined 57.1%. Moreover, microcystin-LR completely degraded Electron paramagnetic resonance (EPR) analysis evidenced continuous production SO4•−, •OH, 1O2, O2•−, contributing both destruction organic matter degradation. This study highlighted significant offered for treating water.

Язык: Английский

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