Bacterial Resilience and Community Shifts Under 11 Draining-Flooding Cycles in Rice Soils DOI Creative Commons
Anderson Santos de Freitas, Filipe Selau Carlos, Guilherme Lucio Martins

et al.

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

Published: Nov. 28, 2024

Abstract Flooded rice cultivation, accounting for 75% of global production, significantly influences soil redox potential, element speciation, pH, and nutrient availability, presenting challenges such as extensive water usage altered properties. This study investigates bacterial community dynamics in soils subjected to repeated draining flooding Rio Grande do Sul, Brazil. We demonstrate that communities exhibit remarkable resilience (the capacity recover after being by a disturbance) but cannot remain stable long-term exposure environmental changes. The beta diversity analysis revealed four distinct states 11 draining/flooding cycles, indicating over successive environment However, the consistent disturbance reduced microbial resilience, causing structure shift time. Those differences were driven substitutions taxa functions not loss diversity. Notable shifts included decline Acidobacteria an increase Proteobacteria Chloroflexi . Increased Verrucomicrobia abundance corresponded with lower pH levels. Functional predictions suggested dynamic metabolic responses, increased nitrification during drained cycles surge fermenters sixth cycle. Despite cyclic disturbances, contributing ecosystem functioning flooded soils. These findings enhance our understanding adaptation, providing insights into sustainable cultivation management practices.

Language: Английский

Sediment bacterial biogeography across reservoirs in the Hanjiang river basin, southern China: the predominant influence of eutrophication-induced carbon enrichment DOI Creative Commons
Hong Seuk Yang, Xiaosong Xiong, Yiping Tai

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: March 28, 2025

A fundamental goal of reservoir ecosystem management is to understand bacterial biogeographic patterns and the mechanisms shaping them at a regional scale. However, little known about how eutrophication, major water quality challenge in reservoirs, influences sediment subtropical regions. In this study, communities were sampled from 21 reservoirs Hanjiang river basin, southern China, spanning trophic states oligotrophic eutrophic. Our findings demonstrated that eutrophication-driven changes total carbon (TC) significantly shaped communities, weakening "distance-decay" relationships typically link community similarity geographical distance. TC content exceeding threshold 13.2 g·kg-1 resulted substantial shifts structure. Specifically, high levels promoted dominance copiotrophic bacteria such as Syntrophales (Deltaproteobacteria), Clostridiaceae (Firmicutes), VadinHA17 (Bacteroidetes), while taxa like Anaerolineaceae (Chloroflexi) Nitrospirota prevalent low sediments. Additionally, higher was associated with increased heterogeneity composition. Reservoirs elevated exhibited more complex interaction networks, characterized by stronger niche segregation competition compared networks. Overall, these underscore pivotal role biogeography They provide valuable insights for predicting responses eutrophication offer guidance mitigating impacts anthropogenic activities on freshwater ecosystems.

Language: Английский

Citations

0
Sustainable strategies for enhancing soil carbon sequestration and their beneficial impacts on soil fertility: A comprehensive review DOI
Mathiyazhagan Narayanan, Christo Ananth,

M. Ayyandurai

et al.

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 204, P. 105752 - 105752

Published: Nov. 20, 2024

Language: Английский

Citations

2
Effect of soil-groundwater system on migration and transformation of organochlorine pesticides: A review DOI Creative Commons

Haohao Li,

Lin Huo,

Rui Zhang

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 290, P. 117564 - 117564

Published: Dec. 18, 2024

Language: Английский

Citations

2
Bacterial Resilience and Community Shifts Under 11 Draining-Flooding Cycles in Rice Soils DOI Creative Commons
Anderson Santos de Freitas, Filipe Selau Carlos, Guilherme Lucio Martins

et al.

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

Published: Nov. 28, 2024

Abstract Flooded rice cultivation, accounting for 75% of global production, significantly influences soil redox potential, element speciation, pH, and nutrient availability, presenting challenges such as extensive water usage altered properties. This study investigates bacterial community dynamics in soils subjected to repeated draining flooding Rio Grande do Sul, Brazil. We demonstrate that communities exhibit remarkable resilience (the capacity recover after being by a disturbance) but cannot remain stable long-term exposure environmental changes. The beta diversity analysis revealed four distinct states 11 draining/flooding cycles, indicating over successive environment However, the consistent disturbance reduced microbial resilience, causing structure shift time. Those differences were driven substitutions taxa functions not loss diversity. Notable shifts included decline Acidobacteria an increase Proteobacteria Chloroflexi . Increased Verrucomicrobia abundance corresponded with lower pH levels. Functional predictions suggested dynamic metabolic responses, increased nitrification during drained cycles surge fermenters sixth cycle. Despite cyclic disturbances, contributing ecosystem functioning flooded soils. These findings enhance our understanding adaptation, providing insights into sustainable cultivation management practices.

Language: Английский

Citations

0