Agustín F. Arata , Mauro Martínez , Claudia Castellari , Diego Cristos , Natalia V. Pesquero , María I. Dinolfo
{"title":"Impact of Fusarium spp. on different maize commercial hybrids: disease evaluation and mycotoxin contamination","authors":"Agustín F. Arata , Mauro Martínez , Claudia Castellari , Diego Cristos , Natalia V. Pesquero , María I. Dinolfo","doi":"10.1016/j.funbio.2024.07.008","DOIUrl":null,"url":null,"abstract":"<div><p>Maize is one of the most important crops cultivated worldwide, whose production can be affected by the presence of several pathogens. <em>Fusarium verticillioides</em> and <em>Fusarium graminearum</em> are the most predominant pathogens affecting maize ears. However, few studies have been focused on studying the interaction between both pathogens in field conditions. For this reason, the aim of the present work was to evaluate the interaction between <em>F. graminearum</em> and <em>F. verticillioides</em> in different genotypes of maize under field conditions. Field experiments were carried out during two growing seasons in Azul, Argentina, including 12 commercial hybrids of maize, which were inoculated with <em>F. graminearum</em>, <em>F. verticillioides</em>, and a mixture of both pathogens. Phenotypic traits (plant height, plant diameter, tiller and cob number, and radiation interception), disease evaluation, and mycotoxin contamination were analyzed. The results showed significant differences between genotypes in disease severity (DS) for both years. In general terms, higher values of DS were reported in 2020 (21.70% ± 0.40) than in 2021 (16.50% ± 0.20). Different climatic conditions registered along the assay, especially precipitations and relative humidity, could be responsible for the differences observed over the years. Moreover, no significant correlations were found regarding DS and mycotoxin contamination for each genotype. For these reasons, an automatic correspondence between DS and mycotoxin contamination could lead to wrong agronomic decisions. The present study points out novel information regarding plant–pathogen interaction (maize-<em>F. verticillioides/F. graminearum</em>) under field conditions that could be useful for future maize breeding programmes.</p></div>","PeriodicalId":12683,"journal":{"name":"Fungal biology","volume":"128 6","pages":"Pages 1983-1991"},"PeriodicalIF":2.9000,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fungal biology","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1878614624000928","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MYCOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Maize is one of the most important crops cultivated worldwide, whose production can be affected by the presence of several pathogens. Fusarium verticillioides and Fusarium graminearum are the most predominant pathogens affecting maize ears. However, few studies have been focused on studying the interaction between both pathogens in field conditions. For this reason, the aim of the present work was to evaluate the interaction between F. graminearum and F. verticillioides in different genotypes of maize under field conditions. Field experiments were carried out during two growing seasons in Azul, Argentina, including 12 commercial hybrids of maize, which were inoculated with F. graminearum, F. verticillioides, and a mixture of both pathogens. Phenotypic traits (plant height, plant diameter, tiller and cob number, and radiation interception), disease evaluation, and mycotoxin contamination were analyzed. The results showed significant differences between genotypes in disease severity (DS) for both years. In general terms, higher values of DS were reported in 2020 (21.70% ± 0.40) than in 2021 (16.50% ± 0.20). Different climatic conditions registered along the assay, especially precipitations and relative humidity, could be responsible for the differences observed over the years. Moreover, no significant correlations were found regarding DS and mycotoxin contamination for each genotype. For these reasons, an automatic correspondence between DS and mycotoxin contamination could lead to wrong agronomic decisions. The present study points out novel information regarding plant–pathogen interaction (maize-F. verticillioides/F. graminearum) under field conditions that could be useful for future maize breeding programmes.
期刊介绍:
Fungal Biology publishes original contributions in all fields of basic and applied research involving fungi and fungus-like organisms (including oomycetes and slime moulds). Areas of investigation include biodeterioration, biotechnology, cell and developmental biology, ecology, evolution, genetics, geomycology, medical mycology, mutualistic interactions (including lichens and mycorrhizas), physiology, plant pathology, secondary metabolites, and taxonomy and systematics. Submissions on experimental methods are also welcomed. Priority is given to contributions likely to be of interest to a wide international audience.