fungal pathogen – Page 6

Roles of NADPH oxidases in regulating redox homeostasis and pathogenesis of the poplar canker fungus Cytospora chrysosperma

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Poplar trees suffer from a serious fungal disease caused by Cytospora chrysosperma that devastates plantations. Scientists discovered that three genes controlling enzyme complexes called NADPH oxidases are critical for the fungus to cause disease. When these genes are removed, the fungus cannot produce enough of a toxic acid it uses to attack trees, and the fungus cells become stressed and damaged. These findings suggest new ways to control the disease by targeting these enzyme complexes.

Study on the Effect of Sooty Mould Disease in Tea Plants

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Sooty mould disease is a serious fungal infection affecting tea plants, causing a black coating on leaves that reduces photosynthesis and decreases the quality of tea. The study identified the fungus responsible (Cladosporium pseudocladosporioides) and showed that friendly bacteria can help prevent the disease. The research provides insights into how the disease damages plants at the cellular and genetic level, offering potential solutions for protecting tea crops.

Morphological, Physiological, Biochemical, and Molecular Characterization of Fungal Species Associated with Papaya Rot in Cameroon

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Papaya rot is a major problem for farmers in Cameroon, causing significant losses in this important tropical fruit crop. Researchers identified three fungi responsible for this rot: Colletotrichum gloeosporioides, Fusarium equiseti, and Lasiodiplodia theobromae. These fungi produce enzymes that break down papaya tissue and also produce toxins harmful to consumers. Understanding how these fungi grow and what conditions favor their development can help farmers develop better strategies to prevent rot and reduce post-harvest losses.

Overview of the Genus Pseudocercospora on Vitaceous Plants in Korea with Introduction of Pseudocercospora neovitis sp. nov.

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Researchers in Korea identified and characterized three fungal species that cause leaf spot diseases on grape plants and related vines. They discovered a new fungal species called Pseudocercospora neovitis on wild grapes (Vitis flexuosa) and found that a common grape leaf spot fungus (Ps. vitis) also infects the commercial grape variety Campbell Early in Korea. These findings help understand the diversity of fungal pathogens affecting grape production and related plants.

Development of a molecular genetics and cell biology toolbox for the filamentous fungus Diplodia sapinea

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Scientists have developed new tools to study a fungus called Diplodia sapinea that damages pine trees around the world. They created a method to genetically modify this fungus and tag its cell nuclei with a red fluorescent marker so they can track the infection process. They also developed a simple way to test infections using young pine seedlings in the laboratory instead of large greenhouse setups. Using these new tools together, researchers can now watch in real-time how the fungus grows inside infected pine plants, which will help develop better ways to protect forests.

Complete genome sequence analysis of Boeremia exigua, a fungal pathogen causing leaf spot disease of Panax notoginseng

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Scientists have sequenced the complete genetic code of a fungus called Boeremia exigua that causes leaf spot disease on Panax notoginseng, a valuable traditional Chinese medicinal plant. The fungus has a toolkit of genes that help it break down plant cell walls and infect the plant. By understanding the fungus’s genetic makeup, researchers hope to develop better ways to prevent or control this disease and protect P. notoginseng crops.

Complete mitochondrial genome of the fungal pathogen Fusarium oxysporum f. sp. palmarum responsible for fusarium wilt of palms

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Scientists have decoded the complete genetic instruction manual for a fungus that causes a deadly disease in palm trees. The fungus, Fusarium oxysporum f. sp. palmarum, kills palm trees by causing one-sided leaf death that spreads upward through the canopy. By sequencing the fungus’s mitochondrial genome—the energy-producing part of its cells—researchers have created a tool that can help quickly and accurately identify this pathogen in infected plants. This discovery will help nurseries and gardeners detect and prevent the spread of this destructive disease.

Postharvest Disease Management of ‘Akizuki’ Pear in China: Identification of Fungal Pathogens and Control Efficacy of Chlorine Dioxide

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Researchers identified four types of fungi that cause rot in ‘Akizuki’ pears during storage: Alternaria alternata, Diaporthe eres, and two types of Penicillium. They tested chlorine dioxide gas as a treatment and found it effectively stopped the fungi from growing without harming the fruit. This discovery offers a safer, more environmentally friendly alternative to traditional fungicide chemicals for keeping stored pears fresh longer.

Genome sequences of three genetic lineages of the fungus Nothophaeocryptopus gaeumannii, the causal agent of Swiss needle cast on Douglas-fir trees

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Researchers sequenced the complete genomes of three different genetic strains of a fungus that causes Swiss needle cast, a disease affecting Douglas-fir trees in the Pacific Northwest. These fungal strains differ in their ability to adapt to different environmental conditions. The high-quality genome information will help scientists understand why these strains are different and how they might spread under changing climate conditions.

Bacillus velezensis LMY3-5 for the biocontrol of soft rot in kiwifruit: antifungal action and underlying mechanisms

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Scientists discovered a beneficial bacteria called Bacillus velezensis that can effectively prevent soft rot disease in kiwifruit, which causes serious damage during storage. The bacteria works by producing natural antimicrobial compounds that damage the fungal pathogen’s cell walls and membranes, stopping it from growing. This biocontrol approach offers an environmentally friendly alternative to chemical fungicides, reducing pesticide residues while maintaining fruit quality and safety.

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