Research Keyword: qPCR quantification

Occurrence and Distribution of Antibiotics and Antibiotic Resistance Genes in the Water and Sediments of Reservoir-Based Drinking Water Sources in Henan, China

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This study examined three drinking water reservoirs in China to understand how antibiotic-resistant bacteria spread through water and sediment. Researchers found that mobile genetic elements (like integrons) play a bigger role than antibiotics themselves in spreading resistance genes among bacteria. One reservoir, Jian’gang, naturally removed most resistance genes as water flowed through, suggesting its natural purification processes are quite effective. Understanding how these factors work together helps protect drinking water supplies from antibiotic-resistant bacteria.

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Control effects and mechanisms of metabolites from Streptomyces ahygroscopicus var. gongzhulingensis strain 769 on sclerotinia rot in sunflowers

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Scientists discovered that a beneficial soil bacterium called Streptomyces can effectively control sunflower rot disease caused by a harmful fungus. When applied to soil or roots, this bacterium reduced disease severity by over 50% and improved plant root health and seed quality. The treatment works by both directly killing the pathogenic fungus and strengthening the plant’s natural defense systems.

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Genetic Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members

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Researchers discovered that cultures of a fungal endophyte found in perennial ryegrass contain complex bacterial communities dominated by Paenibacillus bacteria. These bacterial cells live on the surface of fungal filaments and regulate each other’s populations through antagonistic interactions, with one strain (E300) acting as a keystone species that controls the community structure. Despite these dynamic bacterial changes, the fungal host’s growth remained unaffected, suggesting a balanced symbiotic relationship important for the grass’s agricultural performance.

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Genetic Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members

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Researchers discovered that fungal endophytes living inside perennial ryegrass plants host communities of bacteria, primarily from the Paenibacillus genus. Two specific bacterial strains were isolated and found to interact antagonistically, with one strain acting as a ‘keystone’ species that controls the composition of the entire bacterial community. Despite these complex bacterial interactions, the bacteria did not negatively affect the fungal endophyte’s growth, suggesting a balanced symbiotic relationship beneficial to the grass plant.

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Identification and potential of the hyperparasite Acremonium persicinum as biocontrol agent against coffee leaf rust

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Coffee plants are severely damaged by a fungal disease called coffee leaf rust that destroys leaves and can reduce harvests by over 70%. Scientists in China discovered a beneficial fungus called Acremonium persicinum that acts as a natural enemy to the rust-causing fungus, essentially eating and destroying it. Laboratory tests showed this beneficial fungus prevented rust infection in 91% of cases and completely stopped the disease from spreading when applied to infected coffee leaves. This natural biological control offers an environmentally friendly alternative to chemical pesticides for protecting coffee crops.

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