Understanding the microbiome–crop rotation nexus in karst agricultural systems: insights from Southwestern China

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

Published: Feb. 26, 2025

Understanding how soil properties and microbial communities respond to crop rotation is essential for the sustainability of agroecosystems. However, there has been limited research on alters below-ground in soils with serious bacterial wilt within karst agricultural system. This study investigated effects continuous planting corn, tobacco, tobacco-corn regions Southwestern China. High-throughput sequencing was used evaluate responses community structure monoculture patterns. As expected, mitigated negative cropping reduced acidification. The also significantly altered composition promoted plant growth by fostering a higher abundance beneficial microorganisms. predominant bacteria genera Sphingomonas Gaiella fungal Mortierella Saitozyma were identified as discriminant biomarkers that are critical ecosystem health. pH, available potassium (AK), phosphorus (AP) primary factors related microbiome assembly. aimed demonstrate association between microbiomes, suggesting altering cultivation patterns could enhance systems.

Language: Английский

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Long-term oyster shell powder applications increase crop yields and control soil acidity and cadmium in red soil drylands

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 28, 2025

The intensification of agricultural production has significantly reduced land availability, necessitating continuous cropping cycles that degrade soil quality and inhibit crop growth. While the short-term use amendments shown significant potential for mitigating these challenges, few studies have explored their long-term effects on acidified soils heavy metal accumulation. Between 2013 2018, a field experiment was conducted in peanut ( Arachis hypogaea L )-growing region Jinxian County, Jiangxi Province, to investigate oyster shell powder applied upland red soil. Before experiment, properties were as follows: pH, 4.54, total cadmium (Cd) content, 0.49 mg kg - ¹; available Cd 0.25 ¹. included three treatments combining chemical fertilizers with at application rates 750, 1500, 2250 ha ¹ (L750, L1500, L2250) control only fertilizer (L0). From yield among all assessed maturity. Soil pH then measured using meter 2.5:1 water-to-soil ratio. Exchangeable hydrogen aluminum determined potassium chloride exchange-neutralization titration method. Meanwhile, content extracted 0.1 M CaCl 2 flame atomic absorption spectrophotometer. showed an annual decline from but applications rate decline. Compared L0, yields L750, L2250 increased by 5.55%-19.42%, 8.64%-28.74%, 15.43%-37.01%, respectively. values higher than L0 treatment 0.03-0.31, 0.16-0.48, 0.28-0.65 units, Their exchangeable contents decreased 10.17%-24.24%, 16.67%-27.94%, 23.40%-29.44%. In addition, 5.05%-26.09%, 23.23%-46.27%, 39.73%-66.97%. contrast, lower 7.96%-19.29%, 9.56%-30.71%, 13.94%-34.65%, Correlation analysis revealed positively associated negatively correlated hydrogen, aluminum, Cd. For every unit increase 119.62-389.82 ¹, while 0.06-0.12 Therefore, findings demonstrate efficacy controlling acidification reducing levels

Language: Английский

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Root-associated microbial diversity and metabolomics in maize resistance to stalk rot

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Dec. 12, 2024

As one of the three major food crops in world, maize plays a significant role alleviating crisis. Maize stalk rot can reduce yield and mechanical harvesting efficiency. In addition, mycotoxins such as Deoxynivalenol (DON) Zearalenone (ZEN) produced by pathogens also harm livestock human health. is an infection whole growth period, there are no effective control measures at present. Therefore, it great to study pathogenesis mechanism from multiple perspectives. present study, root rhizosphere soil disease-resistant inbred line Y853 disease-susceptible Q478 were collected dough stage (R4) maturity (R6) maize, respectively. The effects resistant/susceptible on microorganisms analyzed amplicon sequences metabolomics. results showed that was different microbial community composition lines stages. Specifically, abundance Arthrobacter , Streptomyces Bacillus R4 higher than R6, while fungal LR853 significantly other compartments. Co-occurrence network analysis pathogen Fusarium had highest degree centrality closeness DR478. Moreover, metabolomics four main metabolic pathways enriched, 15 metabolites upgrade resistant line. Furthermore, microbes, especially fungi, related these metabolites. Our revealed resistance closely root-associated microbiota rhizospheric metabolites, which would be new perspective phytopathogenic biocontrol.

Language: Английский

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Microbiome Transition Mediated Plant Immune Response to Alternaria solani (Ellis & Martin) Jones & Grout Infection in Tomato (Solanum lycopersicum L.)

Heliyon, Journal Year: 2024, Volume and Issue: 10(17), P. e37203 - e37203

Published: Sept. 1, 2024

Language: Английский

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