Phenolic compounds inhibit viability and infectivity of the grapevine pathogens Diplodia seriata, Eutypa lata, Fomitiporia mediterranea, and Neofusicoccum parvum
{"title":"Phenolic compounds inhibit viability and infectivity of the grapevine pathogens Diplodia seriata, Eutypa lata, Fomitiporia mediterranea, and Neofusicoccum parvum","authors":"Kateřina ŠTŮSKOVÁ, Vincenzo MONDELLO, Eliška HAKALOVÁ, Dorota TEKIELSKA, Florence FONTAINE, Aleš EICHMEIER","doi":"10.36253/phyto-14716","DOIUrl":null,"url":null,"abstract":"Many fungal pathogens are associated with grapevine trunk diseases (GTDs), which cause important yield and economic losses in grape production. There are no effective control methods against GTDs once plants are infected, so research is aimed at preventive measures to avoid infections in nurseries and vineyards. Inhibitory activities of the phenolic compounds eugenol, epigallocatechin–3–O–gallate (EGCG) and thymol against the GTD fungi Diplodia seriata, Eutypa lata, Fomitiporia mediterranea and Neofusicoccum parvum were assessed in vitro, and in planta as grapevine pruning wound treatments. Greatest inhibition of pathogen mycelium growth was observed with eugenol (fungistatic at 1,500 µg mL–1, fungicidal at 2,500 µg mL–1). No inhibitory activity against GTD fungi was observed with EGCG. Minimum concentrations with in vitro inhibitory effects on D. seriata and N. parvum spore germination were 360 µg mL–1 for thymol and 750 µg mL–1 for eugenol. In the grapevine wound protection tests, thymol was effective against N. parvum at 360 µg mL–1, but eugenol was not.","PeriodicalId":20165,"journal":{"name":"Phytopathologia Mediterranea","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Phytopathologia Mediterranea","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.36253/phyto-14716","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Many fungal pathogens are associated with grapevine trunk diseases (GTDs), which cause important yield and economic losses in grape production. There are no effective control methods against GTDs once plants are infected, so research is aimed at preventive measures to avoid infections in nurseries and vineyards. Inhibitory activities of the phenolic compounds eugenol, epigallocatechin–3–O–gallate (EGCG) and thymol against the GTD fungi Diplodia seriata, Eutypa lata, Fomitiporia mediterranea and Neofusicoccum parvum were assessed in vitro, and in planta as grapevine pruning wound treatments. Greatest inhibition of pathogen mycelium growth was observed with eugenol (fungistatic at 1,500 µg mL–1, fungicidal at 2,500 µg mL–1). No inhibitory activity against GTD fungi was observed with EGCG. Minimum concentrations with in vitro inhibitory effects on D. seriata and N. parvum spore germination were 360 µg mL–1 for thymol and 750 µg mL–1 for eugenol. In the grapevine wound protection tests, thymol was effective against N. parvum at 360 µg mL–1, but eugenol was not.
期刊介绍:
Phytopathologia Mediterranea is an international journal edited by the Mediterranean Phytopathological Union. The journal’s mission is the promotion of plant health for Mediterranean crops, climate and regions, safe food production, and the transfer of new knowledge on plant diseases and their sustainable management.
The journal deals with all areas of plant pathology, including etiology, epidemiology, disease control, biochemical and physiological aspects, and utilization of molecular technologies. All types of plant pathogens are covered, including fungi, oomycetes, nematodes, protozoa, bacteria, phytoplasmas, viruses, and viroids. The journal also gives a special attention to research on mycotoxins, biological and integrated management of plant diseases, and the use of natural substances in disease and weed control. The journal focuses on pathology of Mediterranean crops grown throughout the world.
The Editorial Board of Phytopathologia Mediterranea has recently been reorganised, under two Editors-in-Chief and with an increased number of editors.