Study on the Ecological Interaction Mechanism of Continuous Cropping Soil Driven by Different Modifiers

Horticulturae, Journal Year: 2025, Volume and Issue: 11(5), P. 446 - 446

Published: April 22, 2025

In this study, the effects of different modifiers on rhizosphere soil microorganisms, their functions, and properties continuous tomato cropping were investigated. Nine amendments selected to treat from a 14-year system. Tomato yield, soluble solids, physical chemical properties, enzyme activities measured. Changes in microbial community structure function determined by metagenomic sequencing, correlation with environmental factors was analyzed. The results showed that among nine amendments, combination farmyard manure + Bacillus subtilis Trichoderma harzianum (T2) plant-derived straw decomposed (T3) had most significant effects. hydrolyzable nitrogen, available phosphorus, potassium, organic matter, total nitrogen contents phosphatase significantly increased under T2 T3 treatments. Compared CK treated T2, alkali-hydrolyzed 34.46%, 41.84%, 52.44%, 45.01%, 24.5%, 41.18%, respectively. also changed significantly. relative abundance Proteobacteria, Chloroflexi, Bacteroidota Hyphomicrobium, Rhodomicrobium, Rhodoplanes compared control. mainly enriched two pathways amino acid metabolism carbohydrate metabolism. Among them, six such as bacterial chemotaxis. three glutathione A analysis pH, phosphatase, catalase key affecting changes. treatment farm manure/plant-derived harziensis improved environment, crop clarified functional mechanisms community, provided practical solution problem degradation agriculture monoculture.

Language: Английский

Variations in the structure and function of the soil fungal communities in the traditional cropping systems from Madeira Island

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

Published: Oct. 1, 2024

Agricultural soils are responsible for ecological functions and services that include primary production of food, fiber fuel, nutrient cycling, carbon cycling storage, water infiltration purification, among others. Fungi important drivers most those ecosystem services. Given the importance fungi in agricultural soils, this study, we aimed to characterize analyse changes soil fungal communities three cropping systems from Madeira Island, where family farming is predominant, investigate response its functional groups physicochemical properties. To achieve that, sequenced amplicons targeting internal transcribed spacer 1 (ITS1) rRNA region, samples 18 agrosystems: 6 vineyards (V), banana plantations (B) vegetable (H). Our results showed alpha diversity indices similar systems, but composition aspects varied them, with more pronounced differences B. Ascomycota, Basidiomycota, Mortierellomycota were main phyla found systems. Agaricomycetes Sordariomycetes predominant classes B, representing 23.8 22.4%, respectively, while (27.9%) followed by Eurotiomycetes (12.3%) V (39.2%) Tremellomycetes (8.9%) H. Saprotrophs group showing higher relative abundance plant pathogens. Regarding symbionts, endophytes highly observed mycorrhizal was The structure mainly correlated content P, K, N, Fe, Cu. In addition, identified bioindicators each system, which means cultivated crops also communities. Overall, favored growth taxa play roles soil, highlights conservative management practices maintain a healthy resilient agrosystem.

Language: Английский