Biochar mediates microbial communities and their metabolic characteristics under continuous monoculture.

Chemosphere

Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education / College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China. Electronic address:

Published: May 2020

Biochar amendment has been extensively used to improve plant performance and suppress disease in monoculture systems; however, few studies have focused on the underlying control mechanisms of replanting disease. In this study, we assessed the effects of biochar application on Radix pseudostellariae plant growth, rhizosphere soil microbial communities, and the physiological properties of microorganisms in a consecutive monoculture system. We found that biochar addition had little impact on the physiological parameters of tissue cultures of R. pseudostellaria but did significantly mediate microbial abundance in the rhizosphere soil of different consecutive monoculture years, leading to decreases in the abundance of pathogenic Fusarium oxysporum, Talaromyces helicus, and Kosakonia sacchari. Furthermore, biochar amendment had negative effects on the growth of beneficial bacteria, such as Burkholderia ambifaria, Pseudomonas chlororaphis, and Bacillus pumilus. Metabolomic analysis indicated that biochar significantly influenced the metabolic processes of F. oxysporum while inhibiting the mycelial growth and abating the virulence on plants. In summary, this study details the potential mechanisms responsible for the biochar-stimulated changes in the abundances and metabolism of rhizosphere bacteria and fungi, decreases in the contents of pathogens, and therefore improvements in the environmental conditions for plants growth. Further research is needed to evaluate the effects of biochar in long-term field trials.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.chemosphere.2020.125835DOI Listing

Publication Analysis

Top Keywords

microbial communities
8
biochar amendment
8
effects biochar
8
rhizosphere soil
8
consecutive monoculture
8
biochar
7
biochar mediates
4
mediates microbial
4
communities metabolic
4
metabolic characteristics
4

Similar Publications

is a dominant member of the human gut microbiome and produces short-chain fatty acids (SCFAs). These promote immune system function and inhibit inflammation, making this microbe important for human health. Lactate is a primary source of gut SCFAs but its utilization by has not been explored.

View Article and Find Full Text PDF

Modern treatment, a healthy diet, and physical activity routines lower the risk factors for metabolic syndrome; however, this condition is associated with all-cause and cardiovascular mortality worldwide. This investigation involved a randomized controlled trial, double-blind, parallel study. Fifty-eight participants with risk factors of metabolic syndrome according to the inclusion criteria were randomized into two groups and given probiotics (Lacticaseibacillus paracasei MSMC39-1 and Bifidobacterium animalis TA-1) (n = 31) or a placebo (n = 27).

View Article and Find Full Text PDF

Aging-induced Alternation in the Gut Microbiota Impairs Host Antibacterial Defense.

Adv Sci (Weinh)

January 2025

Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China.

Older individuals experience increased susceptibility and mortality to bacterial infections, but the underlying etiology remains unclear. Herein, it is shown that aging-associated reduction of commensal Parabacteroides goldsteinii (P. goldsteinii) in both aged mice and humans critically contributes to worse outcomes of bacterial infection.

View Article and Find Full Text PDF

Differential Responses of Methylobacterium and Sphingomonas Species to Multispecies Interactions in the Phyllosphere.

Environ Microbiol

January 2025

Institute of Microbiology and Dahlem Centre of Plant Sciences, Department of Biology, Chemistry, Pharmacy, Freie Universität Berlin, Berlin, Germany.

The leaf surface, known as the phylloplane, presents an oligotrophic and heterogeneous environment due to its topography and uneven distribution of resources. Although it is a challenging environment, leaves support abundant bacterial communities that are spatially structured. However, the factors influencing these spatial distribution patterns are not well understood.

View Article and Find Full Text PDF

Exploration missions to Mars rely on landers or rovers to perform multiple analyses over geographically small sampling regions, while landing site selection is done using large-scale but low-resolution remote-sensing data. Utilizing Earth analog environments to estimate small-scale spatial and temporal variation in key geochemical signatures and biosignatures will help mission designers ensure future sampling strategies meet mission science goals. Icelandic lava fields can serve as Mars analog sites due to conditions that include low nutrient availability, temperature extremes, desiccation, and isolation from anthropogenic contamination.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!