disease management – Page 9

Unveiling Species Diversity of Plectosphaerellaceae (Sordariomycetes) Fungi Involved in Rhizome and Root Rots of Ginger in Shandong Province, China

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Researchers in China identified four species of fungi causing serious rot diseases in ginger plants, including two completely new species and one previously unreported in China. These fungi were found in Shandong Province, a major ginger-growing region, and were confirmed to cause the disease through laboratory experiments. The study helps farmers understand and potentially manage these devastating ginger diseases that can destroy up to 100% of crops.

Identification and virulence factors prediction of Didymella segeticola causing leaf spot disease in Asarum heterotropoides in China

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This research identifies a fungal disease causing serious damage to Chinese wild ginger crops in northeastern China. Scientists found that the fungus Didymella segeticola causes leaf spot disease and identified 87 proteins that help the fungus harm the plants. The study provides important information for developing strategies to prevent this disease and protect this valuable medicinal herb crop.

2-Nonanol produced by Bacillus velezensis EM-1: a new biocontrol agent against tobacco brown spot

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Researchers discovered that a beneficial bacterium called Bacillus velezensis produces a natural compound called 2-nonanol that effectively kills the fungus causing brown spots on tobacco leaves. This compound works by disrupting the fungus’s ability to obtain energy and handle stress. Testing on tobacco leaves showed that 2-nonanol could significantly reduce disease development. This discovery offers a promising environmentally-friendly alternative to chemical fungicides for protecting tobacco crops.

Complete genome analysis and antimicrobial mechanism of Bacillus velezensis GX0002980 reveals its biocontrol potential against mango anthracnose disease

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Researchers discovered a beneficial bacterium called Bacillus velezensis that can prevent mango rot caused by a destructive fungus. This bacterium produces natural antimicrobial compounds that kill the disease-causing fungus without the need for harmful chemical pesticides. When applied to mangoes, it reduced disease by 52% and extended the fruits’ shelf life, offering a safe and environmentally friendly solution for protecting mangoes after harvest.

Elucidation of Twig Canker and Shoot Blight (TCSB) in Peach Caused by Diaporthe amygdali in the North of Italy in Emilia-Romagna

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Peach trees in northern Italy are suffering from a disease called twig canker and shoot blight caused by a fungus called Diaporthe amygdali. This research identified and characterized this fungus from affected orchards, studying how it grows at different temperatures to better understand and control the disease. The fungus grows best around 23-24°C and can survive extreme heat above 50°C. These findings will help fruit growers develop better strategies to protect their peach crops.

Impact of Various Essential Oils on the Development of Pathogens of the Fusarium Genus and on Health and Germination Parameters of Winter Wheat and Maize

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Researchers tested four plant-based essential oils as natural alternatives to chemical fungicides for protecting wheat and maize seeds from harmful Fusarium fungi. Thyme oil proved most effective at preventing fungal infections and seedling disease, performing as well as synthetic fungicides. However, thyme oil at higher doses harmed seed germination and plant growth, suggesting careful dose selection is needed for practical use. The findings indicate essential oils could replace chemical pesticides while maintaining crop safety, though different oils must be tested for various crops.

Inhibition of RNase to Attenuate Fungal-Manipulated Rhizosphere Microbiome and Diseases

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A fungal pathogen that causes root rot in soybeans and other crops uses a toxic protein called Fg12 to kill beneficial bacteria in the soil that would otherwise protect plants. Scientists discovered that guanosine monophosphate (GMP), a simple chemical compound, can block this toxic protein. When applied to soil, GMP protects plants by allowing beneficial bacteria to survive and fight the fungal infection.

Elucidation of Mechanism of Soil Degradation Caused by Continuous Cropping of Dictyophora rubrovalvata Using Metagenomic and Metabolomic Technologies

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When farmers grow Dictyophora rubrovalvata mushrooms in the same soil repeatedly, the soil becomes degraded and mushroom production fails. Scientists found that repeated cultivation changes the soil’s microbe populations, reducing beneficial bacteria while increasing harmful fungi, and toxic compounds accumulate that further damage mushroom growth. By understanding these mechanisms through DNA sequencing and chemical analysis, better strategies can be developed to maintain healthy soil for sustainable mushroom farming.

Analysis of the Differences in Rhizosphere Microbial Communities and Pathogen Adaptability in Chili Root Rot Disease Between Continuous Cropping and Rotation Cropping Systems

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This study shows that rotating chili crops with cotton significantly improves soil health and reduces chili root rot disease compared to continuous chili cultivation. By changing crops, beneficial bacteria like Bacillus increase while disease-causing fungi like Fusarium decrease in the soil. The research identifies the main pathogens causing chili root rot and their growth preferences, providing farmers with a scientific basis for using crop rotation as a natural, sustainable alternative to chemical pesticides.

Circadian clock is critical for fungal pathogenesis by regulating zinc starvation response and secondary metabolism

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Scientists discovered that Fusarium oxysporum, a fungus that causes plant diseases, uses an internal clock system to time its attacks on plants. The fungus is most dangerous at dawn, when it activates special genes to survive the plant’s defenses and produce toxins. By disrupting the fungus’s clock genes, researchers found they could make it harmless. This discovery could lead to new ways to protect crops by targeting the pathogen’s timing system rather than using traditional fungicides.

Research Keyword: disease management