Diversity and Potential Metabolic Characteristics of Culturable Copiotrophic Bacteria That Can Grow on Low-Nutrient Medium in Zhenbei Seamount in the South China Sea DOI Creative Commons

Zhangqi Zhao,

Sizhen Liu,

Shan Jiang

et al.

Microbial Ecology, Journal Year: 2024, Volume and Issue: 87(1)

Published: Dec. 1, 2024

Oligotrophs are predominant in nutrient-poor environments, but copiotrophic bacteria may tolerate conditions of low energy and can also survive thrive these nutrient-limited conditions. In the present study, we isolated 648 strains using a dilution plating method after enrichment for low-nutrient We collected 150 seawater samples at 21 stations different parts water column Zhenbei Seamount South China Sea. The that could grow on medium were genera 42 species. A total 99.4% (644/648) phylum Pseudomonadota, with 73.3% (472/644) class Gammaproteobacteria 26.7% (172/644) Alphaproteobacteria. Among representative isolates, Pseudoalteromonas arabiensis, Roseibium aggregatum, Vibrio neocaledonicus all layers almost stations. Almost half species (20/42) contained genes performed nitrate reduction, confirmation by reduction testing. These isolates functioned sulfur metabolism, including sulfate thiosulfate oxidation, disproportionation, dimethylsulfoniopropionate degradation. GH23, CBM50, GT4, GT2, GT51 main carbohydrate-active enzymes (CAZymes), five or strains. most abundant classes CAZymes those associated degradation chitin, starch, cellulose. Collectively, our study marine capable growing demonstrated diversity their potential metabolic characteristics.

Language: Английский

Nitrogen fertilization and soil nitrogen cycling: Unraveling the links among multiple environmental factors, functional genes, and transformation rates DOI
Lei Du, Haohui Zhong,

Xinnian Guo

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175561 - 175561

Published: Aug. 15, 2024

Language: Английский

Citations

10
Mycorrhizal and nutrient controls of carbon sequestration in tropical rainforest soil DOI Creative Commons
Jie Chen, Xin Tang, Han Xu

et al.

Geoderma, Journal Year: 2025, Volume and Issue: 454, P. 117188 - 117188

Published: Jan. 27, 2025

Language: Английский

Citations

0
The diversity, composition, network characteristics and community assembly of intestinal microbiome in sea cucumber reflect the differences in habitats and aquaculture practices DOI
Cui Liang, Bing Wang, Kai Luo

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 376, P. 124487 - 124487

Published: Feb. 10, 2025

Language: Английский

Citations

0
Bacterial rrn copy numbers linked to soil function and crop yield in long-term manure-fertilized soils DOI
Shuikuan Bei, Xingjie Wu, Yong Hou

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 209, P. 106048 - 106048

Published: March 26, 2025

Language: Английский

Citations

0
Impacts of Biodegradable Microplastics on Rhizosphere Bacterial Communities of Arabidopsis thaliana: Insights into Root Hair-Dependent Colonization DOI
Keyi Chen, Zhihong Jin, Qing Zhu

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121496 - 121496

Published: March 1, 2025

Language: Английский

Citations

0
Altered precipitation and nighttime warming reshape the vertical distribution of soil microbial communities DOI Creative Commons
Suo Liu, Jingyi Ru, Xue Guo

et al.

mSystems, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

ABSTRACT Soil depth determines microbial community composition. Yet, it remains largely unexplored how climate changes affect the vertical distribution of soil communities. Here, we investigated effects altered precipitation and nighttime warming on communities in topsoils (0–20 cm) subsoils (20–50 a temperate grassland Inner Mongolia, China. As commonly observed under nutrient scarcity conditions, bacterial fungal α-diversity network complexity decreased with depth. However, protistan increased, which was attributed to less niche overlap smaller body size. Strikingly, slopes linear regressions α-diversity/network were all reduced by precipitation. Microbial composition significantly influenced both precipitation, lesser extent elevated The ribosomal RNA gene operon ( rrn ) copy number, genomic proxy demand, depth, percentages positive links higher subsoil, supporting “hunger game” hypothesis. Both number while increasing links, enhancing potential sharing among species. stochasticity level assemblies showing that acted as selection force. Altered increased stochasticity, attenuating depth’s filtering effect diminishing its relationship diversity. Collectively, unveiled predominant influence affecting IMPORTANCE Understanding change impacts is critical for predicting ecosystem responses global environmental shifts. exhibit strong depth-related stratification, yet variables, such warming, these patterns have been inadequately studied. Our research uncovers disrupts previously relationships between diversity, finding challenges traditional models ecology. Furthermore, our study provides experimental support hunger game hypothesis, highlighting oligotrophic microbes, characterized lower numbers, are selectively favored nutrient-poor subsoils, fostering cooperation resource exchange. By unraveling complexities communities, findings offer crucial insights developing strategies mitigate adverse impacts.

Language: Английский

Citations

0
Soil Microbial Co‐Occurrence Networks Across Climate and Land Use Gradient in Southern Italy DOI Creative Commons

Mohamed Idbella,

Giuseppina Iacomino, Ahmed M. Abd‐ElGawad

et al.

Environmental Microbiology Reports, Journal Year: 2025, Volume and Issue: 17(2)

Published: April 1, 2025

ABSTRACT Despite extensive research on microbiota across land use gradients, it remains unclear if microbial co‐occurrence relationships exhibit consistent patterns. Here, we assessed networks of seven natural ecosystems— Quercus ilex forest, Fagus sylvatica Abies alba Mediterranean and mountain grasslands, subalpine shrublands—and five agroecosystems, including vineyards, horticulture, greenhouse, a polluted agricultural system, an arid greenhouse. Soil chemistry, such as pH, organic carbon total nitrogen, was characterised, soil were profiled using high‐throughput sequencing from 242 samples. Our results revealed that grasslands had the highest (86.4 g/kg), while greenhouse lowest (6.1 g/kg). pH 5.79, vineyards electrical conductivity 0.901 dS/m. Notably, ecosystem exhibited greater modularity, with protected horticulture showing exceptionally (0.937), intensive agriculture within agroecosystems significantly lower modularity 0.282. Modularity number modules positively correlated P 2 O 5 , network diameter, path length clustering coefficient pH. Additionally, edges nodes number, average degree diversity associated nitrogen. These findings highlight ecosystems foster more complex resilient networks, underscoring sustainable management's importance to preserve health diversity.

Language: Английский

Citations

0
The contrasting roles of fungal and bacterial diversity and composition in shaping the multifunctionality of rhizosphere and bulk soils across large-scale bamboo forests DOI Creative Commons
Wen Guo, Mai‐He Li,

Lianghua Qi

et al.

BMC Microbiology, Journal Year: 2025, Volume and Issue: 25(1)

Published: April 27, 2025

Language: Английский

Citations

0
Bacterial community assembly processes mediate soil functioning under cadmium stress in the agroecosystem DOI

Jiannan Jian,

Shuang Feng,

Yi Xu

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 494, P. 138496 - 138496

Published: May 4, 2025

Language: Английский

Citations

0
More sensitive microbial responses to the interactive effects of warming and altered precipitation in subsoil than topsoil of an alpine grassland ecosystem DOI
Qi Qi, Shijie Ning, Xue Guo

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(9)

Published: Sept. 1, 2024

Abstract Subsoil is a large organic carbon reservoir, storing more than half of the total soil (SOC) globally. Conventionally, subsoil assumed to not be susceptible climate change, but recent studies document that change could significantly alter cycling. However, little known about microbial responses interactive effects warming and altered precipitation. Here, we investigated cycling associated in both (30–40 cm) topsoil (0–10 Tibetan alpine grassland over 4 years Compared unchanged ( β = .55, p .587), exhibited stronger response effect precipitation 2.04, .021), is, decreased content by 28.20% under while increased 18.02% precipitation.Furthermore, 512 metagenome‐assembled genomes (MAGs) were recovered, including representatives phyla with poor genomic representation. only one changed MAG, 16 MAGs affected precipitation, 5 More twice as many populations whose MAG abundances correlated variations content, components fluxes observed topsoil, suggesting their potential contribution mediating Collectively, our findings highlight sensitive specific lineages provide key information for predicting future scenarios.

Language: Английский

Citations

3