Discrepant diversity patterns and function of bacterial and fungal communities on an earthquake-prone mountain gradient in Northwest Sichuan, China DOI Creative Commons

Tianzhi Huang,

Yingyan Wang, Xuemei Wang

et al.

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: Aug. 22, 2023

Patterns of microbial diversity on elevational gradients have been extensively studied, but little is known about those patterns during the restoration earthquake-fractured alpine ecosystems. In this study, soil properties, enzyme activities, abundance and bacterial fungal communities at four positions along a 2.6-km gradient in Snow Treasure Summit National Nature Reserve, located Pingwu County, Southwest China. Although there were no significant changes chemical environment, significantly different elevations. The overall community presented an N-shaped pattern with increasing elevation, while decreased elevation. Changes associated phosphorus, plant litter, variations dominant taxa. Differences activities among elevations regulated by communities, catalase acid phosphatase mainly controlled Acidobacteria Planctomycetaceae bacteria, respectively (catalase: p < 0.001; phosphatase: 0.01), β-glucosidase, sucrase, urease fungi. β-glucosidase sucrase both positively correlated Herpotrichiellaceae, was Sebacinaceae (p 0.05). These findings contribute to conservation management mountain ecosystems face changing environmental conditions. Further research can delve into specific interactions between vegetation gain deeper insights intricate ecological dynamics within earthquake-prone

Language: Английский

Sensitivity of phytoplankton, zooplankton and macroinvertebrates to hydrogen peroxide treatments of cyanobacterial blooms DOI Creative Commons

Erik F. J. Weenink,

Michiel H.S. Kraak,

Corné van Teulingen

et al.

Water Research, Journal Year: 2022, Volume and Issue: 225, P. 119169 - 119169

Published: Sept. 27, 2022

Addition of hydrogen peroxide (H2O2) is a promising method to acutely suppress cyanobacterial blooms in lakes. However, reliable H2O2 risk assessment identify potential effects on non-target species currently hampered by lack appropriate ecotoxicity data. The aim the present study was therefore quantify responses wide diversity freshwater phytoplankton, zooplankton and macroinvertebrates treatments blooms. To this end, we applied multifaceted approach. First, investigated 24-h toxicity three cyanobacteria (Planktothrix agardhii, Microcystis aeruginosa, Anabaena sp.) 23 (six green algae, eight nine macroinvertebrate taxa), using EC50 values based photosynthetic yield for phytoplankton LC50 mortality other organisms. most sensitive included all taxa, but also rotifer Brachionus calyciflores cladocerans Ceriodaphnia dubia Daphnia pulex. Next, obtained from laboratory tests were used construct sensitivity distribution (SSD) H2O2. Finally, predicted be at SSD compared with two whole-lake predictions laboratory-based matched well different taxa lake. first lake treatment, relatively low concentration short residence time, successfully suppressed without major species. second treatment had higher longer which resulted partial suppression cyanobacteria, collapse rotifers decreased abundance small cladocerans. Our results thus revealed trade-off between successful expense adverse part community. This delicate balance strongly depends dosage may affect decision whether treat or not.

Language: Английский

Citations

29
Routine monitoring of western Lake Erie to track water quality changes associated with cyanobacterial harmful algal blooms DOI Creative Commons
Anna G. Boegehold,

Ashley M. Burtner,

Andrew Camilleri

et al.

Earth system science data, Journal Year: 2023, Volume and Issue: 15(8), P. 3853 - 3868

Published: Aug. 25, 2023

Abstract. The western basin of Lake Erie has a history recurrent cyanobacterial harmful algal blooms (HABs) despite decades efforts by the United States and Canada to limit phosphorus loading, major driver blooms. In response, National Oceanic Atmospheric Administration (NOAA) Great Lakes Environmental Research Laboratory (GLERL) Cooperative Institute for (CIGLR) created an annual sampling program detect, monitor, assess, predict HABs in (WLE). Here we describe data collected from this monitoring 2012 2021. This dataset includes observations on physicochemical properties, nutrient fractions, phytoplankton pigments, microcystins, optical properties Erie. is particularly relevant creating models, verifying calibrating remote sensing algorithms, informing experimental research further understand water quality dynamics that influence internationally significant body freshwater. can be freely accessed NOAA Centers Information (NCEI) at https://doi.org/10.25921/11da-3x54 (Cooperative Research, University Michigan Laboratory, 2019).

Language: Английский

Citations

19
Biological and Chemical Approaches for Controlling Harmful Microcystis Blooms DOI
Wonjae Kim, Yerim Park, Jaejoon Jung

et al.

The Journal of Microbiology, Journal Year: 2024, Volume and Issue: 62(3), P. 249 - 260

Published: March 1, 2024

Language: Английский

Citations

8
Microbial diversity, genomics, and phage–host interactions of cyanobacterial harmful algal blooms DOI Creative Commons
Lauren E. Krausfeldt,

Elizaveta Shmakova,

Hyo Won Lee

et al.

mSystems, Journal Year: 2024, Volume and Issue: 9(7)

Published: June 10, 2024

The occurrence of cyanobacterial harmful algal blooms (cyanoHABs) is related to their physical and chemical environment. However, less known about associated microbial interactions processes. In this study, cyanoHABs were analyzed as a ecosystem, using 1 year 16S rRNA sequencing 70 metagenomes collected during the bloom season from Lake Okeechobee (Florida, USA). Biogeographical patterns observed in community composition function reflected ecological zones distinct parameters that resulted "hotspots" near major lake inflows. Changes relative abundances taxa within multiple phyla followed increasing severity. Functional pathways correlated with severity encoded organic nitrogen phosphorus utilization, storage nutrients, exchange genetic material, phage defense, protection against oxidative stress, suggesting may promote cyanoHAB resilience. Cyanobacterial communities highly diverse, picocyanobacteria ubiquitous oftentimes most abundant, especially absence blooms. identification novel bloom-forming cyanobacteria genomic comparisons indicated functionally diverse differences its capability store cyanophycin defend CRISPR restriction-modification systems. Considering context ecosystem nature, physiologies supporting proliferation stability are proposed, including role for infection picocyanobacteria. This study displayed power "-omics" reveal important biological processes could support effective management prediction cyanoHABs.

Language: Английский

Citations

6
Spatiotemporal diversity and community structure of cyanobacteria and associated bacteria in the large shallow subtropical Lake Okeechobee (Florida, United States) DOI Creative Commons
Forrest W. Lefler, Maximiliano Barbosa, Paul V. Zimba

et al.

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: Aug. 30, 2023

Lake Okeechobee is a large eutrophic, shallow, subtropical lake in south Florida, United States. Due to decades of nutrient loading and phosphorus rich sediments, the eutrophic frequently experiences cyanobacterial harmful algal blooms (cyanoHABs). In past, surveys phytoplankton community structure have been conducted by morphological studies, whereas molecular based studies seldom employed. With increased frequency cyanoHABs (e.g., 2016 2018 Microcystis-dominated blooms), it imperative determine diversity taxa that exist within limnological parameters drive bloom-forming genera. A spatiotemporal study was over course 1 year characterize (cyano)bacterial structure, using 16S rRNA metabarcoding, with coincident collection nutrients, water temperature, major ions), cyanotoxins. The objectives this were elucidate trends identify drivers examine cyanobacteria-bacterial relationships lake. Results indicated communities significantly different between wet dry season, but not periods nitrogen limitation co-nutrient limitation. Throughout year, primarily dominated picocyanobacterium Cyanobium. genera Cuspidothrix, Dolichospermum, Microcystis, Raphidiopsis highly abundant throughout had disparate requirements niches Anatoxin-a, microcystins, nodularins detected across both seasons. There no correlated (cyano)bacteria shared common cyanobacteria Raphidiopsis. This first its kind use methods assess These data greatly improve our understanding physiochemical which may Okeechobee.

Language: Английский

Citations

14
Alleviation of H2O2 toxicity by extracellular catalases in the phycosphere of Microcystis aeruginosa DOI
Yerim Park, Wonjae Kim, Yeji Cha

et al.

Harmful Algae, Journal Year: 2024, Volume and Issue: 137, P. 102680 - 102680

Published: June 23, 2024

Language: Английский

Citations

5
The Western Lake Erie culture collection: A promising resource for evaluating the physiological and genetic diversity of Microcystis and its associated microbiome DOI Creative Commons
Colleen E. Yancey, E. Anders Kiledal, Subba Rao Chaganti

et al.

Harmful Algae, Journal Year: 2023, Volume and Issue: 126, P. 102440 - 102440

Published: April 30, 2023

Language: Английский

Citations

12
Metabonomics analysis of microalga Scenedesmus obliquus under ciprofloxacin stress DOI
Yue Wang,

Weihao Ning,

Shengnan Li

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 237, P. 116974 - 116974

Published: Aug. 23, 2023

Language: Английский

Citations

11
Bacterial community shifts induced by high concentration hydrogen peroxide treatment of Microcystis bloom in a mesocosm study DOI
Taylor L. Hancock, Elizabeth K. Dahedl, Michael A. Kratz

et al.

Harmful Algae, Journal Year: 2024, Volume and Issue: 133, P. 102587 - 102587

Published: Feb. 5, 2024

Language: Английский

Citations

4
Effects of environmental concentrations of sulfamethoxazole on Skeletonema costatum and Phaeodactylum tricornutum: Insights into growth, oxidative stress, biochemical components, ultrastructure, and transcriptome DOI Creative Commons
Pengfei Feng, Jiangyue Wu, Hongwu Cui

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 283, P. 116851 - 116851

Published: Aug. 10, 2024

This study aimed to assess the ecological risks posed by sulfamethoxazole (SMX) at environmentally relevant concentrations. Specifically, its effects on growth and biochemical components (total protein, total lipid, carbohydrate) of two marine microalgae species, namely Skeletonema costatum (S. costatum) Phaeodactylum tricornutum (P. tricornutum), were investigated. Our findings revealed that concentrations SMX below 150 ng/L stimulated both microalgae. Conversely, higher concentrations, inhibited their while promoting synthesis photosynthetic pigments, carbohydrate (P < 0.05). Transmission electron microscope (TEM) observations demonstrated significant alterations in ultrastructure algal cells exposed SMX, including nuclear marginalization, increased chloroplast volume, heightened vacuolation. In addition, when was lower than 250 ng/L, there no oxidative damage cells. However, antioxidant defense system activated varying degrees, level malondialdehyde (MDA) increased, indicating algae damaged oxidation. From molecular level, environmental concentration can induce produce more energy substances, but are almost other adverse effects, low actual exposure unlikely threaten P. tricornutum, a significantly reduce genetic products, which affect changes cell structure some extent. Therefore, still has certain potential These outcomes improved current understanding associated with environments.

Language: Английский

Citations

4