Research Keyword: canker 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.

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Genome sequencing and analysis of isolates of Cytospora sorbicola and Cytospora plurivora associated with almond and peach canker

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This study provides genetic blueprints for two dangerous fungal pathogens that damage almond and peach orchards by causing canker diseases. Scientists sequenced the complete genomes of these fungi and identified genes responsible for their ability to infect plants, finding that they’ve evolved special abilities to survive in nutrient-poor bark tissue. This genetic information could help farmers develop fruit trees resistant to these infections. The research also clarifies the identity of a newly described fungal species, showing it’s actually the same as a previously known species.

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A rapid and efficient in vivo inoculation method for introducing tree stem canker pathogens onto leaves: suitable for large-scale assessment of resistance in poplar breeding progeny

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Scientists developed a new, faster way to test poplar trees for resistance to stem canker diseases by inoculating fungal pathogens directly onto leaves instead of using whole stem segments. This method is much simpler, cheaper, and produces results in just 5 days compared to weeks for traditional methods. By testing leaves at different positions on trees and under different light conditions, researchers showed this leaf-based method accurately identifies resistant poplar clones for breeding programs.

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Genome sequencing and analysis of isolates of Cytospora sorbicola and Cytospora plurivora associated with almond and peach canker

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Scientists have sequenced the complete genetic code of two fungal species that cause destructive canker diseases in almond and peach trees. These fungi are difficult to control once they infect trees, and developing disease-resistant plant varieties is the best approach to protect orchards. The genetic information from this study will help researchers understand how these fungi cause disease and develop better strategies to breed resistant fruit trees.

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New species and records of ascomycetes on cypress in Beijing, China

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Researchers in Beijing investigated fungal diseases affecting cypress trees, which are important for landscaping and have medicinal value. They collected samples from diseased and healthy cypress parts and identified 13 different fungal species, including two completely new species and two species previously unknown on cypress trees. The study helps us understand the various fungi living on cypress trees, both harmful pathogens and potentially beneficial endophytic fungi that may have useful medicinal properties.

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