Effects of heavy metals on variation in bacterial communities in farmland soil of tailing dam collapse area

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 8, 2025

Heavy metals are commonly present in polluted soil mining areas. In this study, we investigated 10 sites of farmland the heavy metal tailing dam collapse area (TDCA) with dominant phyla Acidobacteriota, Proteobacteria, Bacteroidetes, and Planctomycetes. The is a composite contamination multiple metals, Cd, Pb Zn being most severely contaminated, levels Hg Cu exceeding screening values at some sites. Shannon, Chao1 ACE indices revealed high microbial diversity but low relative abundance microorganisms TDCA1 TDCA3 results redundancy analysis (RDA) showed that (Max = 4.31 mg/kg) 100 were important factors affecting community TDCA compared to other metals. Correlation communities RB41 (Acidobacteria) was more resistant concentrations Pb, pollution. genera UTCFX1 (Chloroflxi) norank_TRA3-20 had strong tolerance Hg. significantly negatively correlated norank_WD2101_soil_group (P < 0.05). Therefore these can be used as indicators for monitoring potential contamination. predict changes ecosystem maintain its ecological balance health.

Language: Английский

---

The influences of heavy metals on soil microbial C, N, P cycling and heavy metal resistance under different fertilization regimes

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 125915 - 125915

Published: Feb. 1, 2025

Language: Английский

---

Effects of lipopolysaccharide infusion on feed intake, apparent digestibility, rumen fermentation and microorganisms of young Holstein bulls fed diets with different ratios of lysine and methionine

Frontiers in Veterinary Science, Journal Year: 2025, Volume and Issue: 11

Published: Jan. 6, 2025

The aim of this experiment was to investigate the effects intravenous infusion lipopolysaccharide (LPS) and feeding different ratios lysine (Lys) methionine (Met) on feed intake, apparent digestibility, rumen fermentation microorganisms in young Holstein bulls. Five seven-month-old bulls with similar body weights (279 ± 42 kg) were selected subjected a 5 × Latin square experiment. control group (CON) fed basal diet ratio Lys Met adjusted 3.0: 1. experimental groups received LPS while being (TRT1), along addition rumen-protected (RPL) (RPM) make 2.5:1 (TRT2), 3.0:1 (TRT3) 3.5: 1 (TRT4), respectively. jugular dose set at 0.01 μg/kg weight days 1-3 0.05 4-7. trial conducted over five periods, consisting 7-day period 6-day interval. results indicated that there no significant intake digestibility (p > 0.05). treatment had pH total volatile fatty acids Compared CON, acetate content exhibited an increasing trend = 0.066), NH3-N decreased significantly < effect either species or phylum level However, could abundance Oribacterium 0.05) tended increase norank_f__norank_o__RF_39 genus 0.087). These findings suggest adding RPL RPM into may enhance environment Under conditions experiment, can mitigate negative associated infusion, optimal is 3.0:1.

Language: Английский

---

Distribution Pattern and Assembly Process of Fungal Communities Along Altitude Gradient in Sediments of the Yellow River Basin

Journal of Fungi, Journal Year: 2025, Volume and Issue: 11(3), P. 214 - 214

Published: March 11, 2025

Microorganisms have a profound impact on the stability and ecological health of aquatic environments. Fungi, as important components river ecosystems, play critical roles decomposers symbionts. A comprehensive understanding mechanisms underlying fungal community assembly is essential for effective conservation management ecosystems. However, distribution patterns process communities along elevation gradients in sediments remain poorly understood. In this study, ITS amplicon sequencing, neutral model, null model were employed to analyze processes altitudinal gradient Yellow River. The results indicated that Ascomycota (47.79%) Basidiomycota (15.68%) identified dominant phyla sediments, collectively accounting 63.47% total relative abundance community. three different gradients, diversity (Shannon) showed gradually decreasing trend with increasing altitude. co-line networks exhibited positive interactions had more complex compact Tibetan Plateau area (YRA). Environmental factors played an role shaping structure communities, lead (Pb), nitrogen (TN), silt, organic carbon (TOC) being main driving changes structure, contributing 15.5%, 12.3%, 10.7%, 10.2%, respectively. process, deterministic found dominate, homogenizing selection most (69.66%). These research help us understand assembly, also provide scientific basis biodiversity rational use biological resources.

Language: Английский

---

Effects of chicken and pig manures application on heavy metal in different soil types and on bacterial in the rhizosphere soil of Chinese cabbage

Antonie van Leeuwenhoek, Journal Year: 2025, Volume and Issue: 118(6)

Published: April 26, 2025

Language: Английский

---

Asymbiotic Nitrogen Fixation in the Phyllosphere of Urban Green Spaces

Current Microbiology, Journal Year: 2025, Volume and Issue: 82(6)

Published: May 3, 2025

Language: Английский

---

Response characteristics of soil Cd availability to microbes in paddy soil with long-term fertilization and its impact on Cd uptake in rice

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 957, P. 177680 - 177680

Published: Nov. 22, 2024

Language: Английский

---