Long-Term Effects of Potassium Fertilization and Wheat Straw Return on Cropland Soil Fertility and Microorganisms in the Qinghai–Tibet Plateau

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 742 - 742

Published: March 19, 2025

Imbalanced fertilization and inadequate of straw return have led to soil potassium (K) depletion fertility decline in croplands the Qinghai–Tibet Plateau. However, how these changes affect microbial communities remains unclear. We analyzed properties, biomass carbon nitrogen, enzyme activities, a long-term field experiment initiated 1992 with K varying wheat amounts. Long-term application significantly reduced (MBC) bacterial species richness inhibited positive bacteria–fungi interactions. By contrast, not only enhanced organic (SOC), total nitrogen (TN), available phosphorus (AP), (AK) but also increased MBC, (MBN), fungal richness. Furthermore, it restructured community composition improved stability connectivity co-occurrence networks. Critically, benefits did scale linearly input quantity. Excessive (>5000 kg ha−1) beneficial effects, destabilized interactions, elevated risks associated parasitic protozoa. Balanced moderate (approximately 5000 enhances promotes effects on

Language: Английский

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Differences in rhizospheric microbial communities between cultivated and wild endangered Glyptostrobus pensilis

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

Published: March 27, 2025

Glyptostrobus pensilis is an endangered species belonging to the Cupressaceae family. The comprehensive examination of soil characteristics and rhizosphere microbial communities vital for conservation efforts, as it provides insights into necessary environmental conditions safeguarding ensuring viability rare species. In this study, diversity composition bacterial fungal were compared in roots soils cultivated wild G. Guangxi, China. results revealed that, at phylum level, was significantly enriched with Verrucomicrobiota , Acidobacteriota Glomeromycota Chloroflexi while Planctomycetota Basidiomycota Ascomycota . Symbiotic network analysis indicated that had higher edge values, average degree, clustering coefficient, density, node coefficient. Moreover, functional prediction suggested bacteria showed metabolic activity, fungi primarily acted saprotrophs symbionts. contrast, displayed lower predominantly functioning saprotrophs. linking rhizospheric factors a closer association community, suggesting stronger influence factors. Random Forest (RF) highlighted total phosphorus potassium levels key influencing microbes available crucial those These differences underscore significant strategies adapting different habitats, which may be intricately linked land management practices Among these, are associated microorganisms Therefore, continuous monitoring nutrient availability regular supplementation fertilizers recommended during cultivation ex-situ

Language: Английский

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Effects of Difenoconazole and Imidacloprid Seed Coatings on Soil Microbial Community Diversity and Ecological Function

Microorganisms, Journal Year: 2025, Volume and Issue: 13(4), P. 806 - 806

Published: April 1, 2025

Difenoconazole and imidacloprid are key components of seed-coating agents, which alter soil microbial community structure function after application. Existing studies mainly focus on the environmental effects their spraying application, while research impacts ecosystem when used as agents is relatively limited. Through field experiments, this study systematically evaluated compared difenoconazole seed coatings wheat rhizosphere communities ecological functions by measuring enzyme activities, employing 16S rRNA ITS high-throughput sequencing technologies predicting KEGG functional pathways. The results showed that significantly reduced bacterial diversity, particularly under high-dosage treatment (0.18 g a.i./kg seed), with a 5.80% decrease in diversity day 30. This most strongly inhibited phyla Bacteroidota Myxococcota, maximum reductions 23.87% 63.57%, respectively. However, abundance Actinobacteriota increased, increase 38.53%. Additionally, fungal increased both treatments. Both altered from days 20 to 60, recovery occurring 120. Furthermore, pathway analysis revealed seed) activated pathways such cell motility, signal transduction, membrane transport, whereas standard dosage (0.12 exhibited metabolic suppression. elucidates dynamic agent application communities, providing theoretical support for rational pesticide use optimization agricultural strategies.

Language: Английский

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Metagenomic analysis reveals soil microbiome responses to microplastics and ZnO nanoparticles in an agricultural soil

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 492, P. 138164 - 138164

Published: April 5, 2025

Language: Английский

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Crop Rotations Reduce Pathogenic Fungi Compared to Continuous Cropping

Rhizosphere, Journal Year: 2025, Volume and Issue: unknown, P. 101074 - 101074

Published: April 1, 2025

Language: Английский

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