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- W4386864191 abstract "Ageritin from poplar mushrooms is a specific endonuclease that hydrolyzes a single phosphodiester bond located in the sarcin-ricin loop (SRL) of the large rRNA, thereby blocking protein synthesis. Considering the possible biotechnological use of this enzyme, here we report its antifungal activity against virulent fungi affecting crops of economic interest. Our results show that ageritin (200 µg/plug; ~13.5 nmole) inhibits the growth of Botrytis cinerea (57%), Colletotrichum truncatum (42%), and Alternaria alternata (57%), when tested on potato dextrose agar plates. At the same time, no effect was observed against Trichoderma harzianum (a fungus promoting beneficial effects in plants). To verify whether the antifungal action of ageritin against B. cinerea and T. harzianum was due to ribosome damage, we tested ageritin in vitro on partially isolated B. cinerea and T. harzianum ribosomes. Interestingly, ageritin was able to release the Endo's fragment from both tested fungal ribosomes. We therefore decided to test the antifungal effect of ageritin on B. cinerea and T. harzianum using a different growth condition (liquid medium). Differently from the result in solid medium, ageritin can inhibit both B. cinerea and T. harzianum fungal growth in liquid medium in a concentration-dependent manner up to 35.7% and 38.7%, respectively, at the highest concentration tested (~200 µg/mL; 12 µM), and the analysis of RNA isolated from ageritin-treated cells revealed the presence of Endo's fragment, highlighting its ability to cross the fungal cell wall and reach the ribosomes. Overall, these data highlight that the efficacy of antifungal treatment to prevent or treat a potential fungal disease may depend not only on the fungal species but also on the conditions of toxin application." @default.
- W4386864191 created "2023-09-20" @default.
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- W4386864191 date "2023-09-18" @default.
- W4386864191 modified "2023-10-11" @default.
- W4386864191 title "Antifungal Activity of Ageritin, a Ribotoxin-like Protein from Cyclocybe aegerita Edible Mushroom, against Phytopathogenic Fungi" @default.
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- W4386864191 doi "https://doi.org/10.3390/toxins15090578" @default.
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