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Mechanical damage can induce fruiting body production in fungi. In this study, the antioxidant kojic acid (KA) was found to enhance injured mycelial regeneration and increase fruiting body production in Hypsizygus marmoreus. KA reduced the level of reactive oxygen species (ROS), which are harmful to mycelia when excessively generated by mechanical damage. Moreover, KA increased catalase and superoxide dismutase activities and glutathione and ascorbic acid contents by up-regulating antioxidant gene expression. These results suggest that KA promotes mycelial regeneration in response to damage by activating a "stress signal" and enhances the ability of H. marmoreus to resist oxidative damage by invoking the antioxidant system. In addition, KA increased the content of extracellular ATP, which serves as a "stress signal" in response to injury, and modulated ROS signaling, decreasing NADPH oxidase gene expression and ROS levels in the mycelial-regeneration stage. KA treatment also up-regulated the MAPK, Ca2+ and oxylipin pathways, suggesting their involvement in the damage response. Furthermore, laccase and cellulase activities were stimulated by KA at different developmental stages. These results demonstrate that KA regulates gene expression and activates pathways for mycelial wound healing, regeneration of damaged mycelia and reproductive structure formation in the basidiomycete H. marmoreus.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5678884 | PMC |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0187351 | PLOS |
Food Chem
January 2025
Zhejiang Key Laboratory of Intelligent Food Logistic and Processing, Key laboratory of post-harvest handling of fruits, Ministry of Agriculture and Rural Affairs, Key laboratory of postharvest preservation and processing of fruits and vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China. Electronic address:
In this study, an antimicrobial component, silk protease inhibitors (SPIs), was extracted from discarded silkworm cocoons, and a suitable degumming method for obtaining regenerated silk fibroin (SF) was screened. An edible antimicrobial coating was prepared by mixing SPIs with SF for evaluation of potential in strawberries preservation. Results demonstrated that SPI could effectively inhibit mycelial growth and spore germination.
View Article and Find Full Text PDFMicroorganisms
June 2024
Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China.
, a medicinal fungus, has garnered significant attention in scientific research and medical applications. In this study, protoplasts of the HS819 strain were prepared using an enzymatic method and achieved a regeneration rate of 5.83%.
View Article and Find Full Text PDFNat Mater
January 2023
Complex Materials, Department of Materials, ETH Zürich, Zürich, Switzerland.
Biological living materials, such as animal bones and plant stems, are able to self-heal, regenerate, adapt and make decisions under environmental pressures. Despite recent successful efforts to imbue synthetic materials with some of these remarkable functionalities, many emerging properties of complex adaptive systems found in biology remain unexplored in engineered living materials. Here, we describe a three-dimensional printing approach that harnesses the emerging properties of fungal mycelia to create living complex materials that self-repair, regenerate and adapt to the environment while fulfilling an engineering function.
View Article and Find Full Text PDFFront Plant Sci
October 2022
College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, China.
wilt, caused by f. sp. (Fo), is a severe soil-borne disease affecting cucumber production worldwide, particularly under monocropping in greenhouses.
View Article and Find Full Text PDFJ Dent
November 2022
Department of Periodontics and Prosthodontics, Bauru School of Dentistry, University of São Paulo, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP 17012-901, Brazil. Electronic address:
Objectives: This randomized clinical trial evaluated the effectiveness of an interim denture resilient liner (Trusoft) modified with minimum inhibitory concentrations (MICs) of antimicrobial agents for Candida albicans biofilm in the denture stomatitis (DS) treatment.
Methods: Forty participants with DS and maxillary complete denture (MCD) wearers were randomly assigned to one of the treatments for 14 days (n=10): nystatin oral suspension (Control-100,000IU/mL; 4 × /day), MCD relined with Trusoft either without (Tru) or with nystatin (Ny) or chlorhexidine diacetate (Chx) at MICs. Cytological smears and mycological quantitative cultures were taken from the palate and denture before treatment (baseline), at the end of treatment (day 14), and at follow-up (days 30, 45, and 60).
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