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51.
Juciano Gasparotto Mario Roberto Senger Emilio Telles de S Moreira Pedro Ozorio Brum Flvio Gabriel Carazza Kessler Daniel Oppermann Peixoto Alana Castro Panzenhagen Lin Kooi Ong Marlene Campos Soares Patricia Alves Reis Giuliana Viegas Schirato Walter Csar Ges Valente Bogar Omar Araújo Montoya Floriano P. Silva Jos Claudio Fonseca Moreira Felipe Dal-Pizzol Hugo C. Castro-Faria-Neto Daniel Pens Gelain 《The Journal of biological chemistry》2021,297(2)
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Pycnidiospores of Phyllosticta ampelicida, the causal agent of black rot of grape, were found to germinate only on substrata on which they were firmly attached. Such surfaces were poorly wettable and had advancing contact angles (straight thetaa) formed by a water drop of >80°, e.g., grape leaf, polystyrene, Teflon, polycarbonate, collodion, and glass treated with the silanes n-octadecyltrichlorosilane, dimethyldichlorosilane, or diphenyldichlorosilane. When pycnidiospores were deposited on more wettable surfaces they did not attach firmly and did not germinate. Such highly wettable surfaces had straight thetaa = 40° and were represented by heat-treated glass, cellophane, nutrient- and water-agars, polystyrene treated with UV-irradiation or sulfuric acid, and glass silanized with n-2-aminoethyl-3-aminopropyltrimethoxysilane, n-(trimethoxysilylpropyl)ethylenediamine triacetic acid trisodium, or 3-aminopropyltriethoxysilane. Adhesion of pycnidiospores was assessed with and without a hydraulic shearing force. Pycnidiospore adhesion occurred over several minutes in distilled deionized water, unless it was first acidified, which decreased attachment time to <0.03 s. Attachment of pycnidiospores treated with sodium azide, formaldehyde, or boiled in water for 10 min was similar to nontreated conidia. Possible mechanisms of adhesion of the conidia to surfaces include hydrophobic and ionic interactions. 相似文献