fungal pathogen – Page 2

SsMet1 is a critical gene in methionine biosynthesis in Sclerotinia sclerotiorum

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Sclerotinia sclerotiorum is a destructive plant pathogen causing white mold and other crop diseases. This study identified and deleted the SsMet1 gene, which is essential for methionine production in this fungus. Fungi lacking this gene could not grow properly, form survival structures called sclerotia, or infect plants. These findings suggest that blocking methionine biosynthesis could be a new way to develop fungicides against this important crop pathogen.

Antifungal mechanism of ketone volatile organic compounds against Pseudogymnoascus destructans

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Researchers discovered that two ketone compounds, 2-undecanone and 2-nonanone, effectively kill Pseudogymnoascus destructans, the fungus that causes white-nose syndrome in bats. Using advanced genetic analysis, they found these ketones work by damaging the fungus’s cell structure, disrupting its energy production, and causing DNA damage. This research provides a foundation for developing new fumigant treatments to protect bat populations from this devastating fungal disease.

Descriptions of 19 Unrecorded Species Belonging to Sordariomycetes in Korea

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Scientists in Korea discovered and documented 19 species of fungi that were previously unrecorded in the country. These fungi were found in soil and freshwater environments across Korea. Using microscopy and DNA analysis, the researchers confirmed the identity of each species and provided detailed descriptions and illustrations. This discovery helps us better understand the fungal diversity present in Korean ecosystems.

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

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Researchers identified a fungus called Didymella segeticola as the cause of a leaf spot disease affecting Chinese wild ginger, a valuable medicinal plant grown in northeastern China. The disease is causing significant crop losses, with up to 75% of fields affected. Scientists analyzed the fungus’s genes and identified 87 proteins that help it cause disease, which could help develop better ways to prevent the disease in the future.

Early changes in microRNA expression in Arabidopsis plants infected with the fungal pathogen Fusarium graminearum

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Researchers studied how Arabidopsis plants respond to infection by the fungus Fusarium graminearum by examining changes in small RNA molecules called microRNAs. They found that the plant activates specific microRNAs early in infection, even before visible disease symptoms appear. Two particularly important microRNAs, miR855 and miR826a, were identified as potential key regulators of the plant’s defense response. These findings could help scientists develop crop varieties with improved resistance to fungal diseases that cause significant agricultural losses worldwide.

Pathogenic potential of polyextremotolerant fungi in a warming world

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Certain fungi can survive extremely harsh conditions like extreme temperatures and dry environments, and many of these same species can cause infections in humans. As the planet warms due to climate change, these fungi are becoming better adapted to higher temperatures, which makes them more dangerous as human pathogens. Scientists are working to better understand these fungi and develop new treatments and vaccines to protect people from fungal infections.

First Report of Colletotrichum kahawae Causing Anthracnose on Buckwheat (Fagopyrum tataricum) in China and Biological Characterization of the Pathogen

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Researchers discovered a serious fungal disease affecting buckwheat crops in China caused by Colletotrichum kahawae, a fungus that ranks among the world’s most damaging plant pathogens. Through laboratory tests, they identified the fungus and determined its optimal growth conditions and which other crops it can infect, including wheat, oats, potatoes, and maize. This is the first time this particular fungus has been reported on buckwheat, and the findings will help farmers develop strategies to prevent and manage the disease.

Seimatosporium chinense, a Novel Pestalotioid Fungus Associated with Yellow Rose Branch Canker Disease

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Researchers identified a new fungal disease affecting ornamental yellow roses in China. The disease causes branch cankers (sunken lesions) and was caused by a previously unknown fungus species named Seimatosporium chinense. By examining the fungus under microscopes and analyzing its DNA, scientists distinguished this new species from similar fungi. This discovery helps understand and manage diseases affecting ornamental rose plants.

Identification, biological characteristics, and screening of control agents against root rot of Ardisia crenata Sims in China

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Researchers identified a fungus called Fusarium cugenangense as the cause of root rot disease in Ardisia crenata, a valuable traditional Chinese medicinal plant. The disease was affecting 25-35% of plants in Chongqing farms and damaging their roots. Scientists tested various pesticides and found that fluazinam chemical spray and zhongshengmycin biological spray were the most effective at stopping the fungus, providing farmers with effective treatment options.

Whole-genome sequencing of Fusarium oxysporum K326-S isolated from tobacco

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Scientists have sequenced the complete genetic code of a fungus called Fusarium oxysporum that infects tobacco plant roots, causing them to wilt and turn brown. This fungus is a major problem for tobacco farmers because it lives in soil and is difficult to control. By mapping out all 17,272 genes in this fungus, researchers now have detailed information that will help them develop better ways to prevent and manage this disease.

Research Keyword: fungal pathogen