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- W2336159594 abstract "HomePlant DiseaseVol. 100, No. 8First Report of Fusarium meridionale Causing Fusarium Head Blight of Wheat in Mexico PreviousNext DISEASE NOTES OPENOpen Access licenseFirst Report of Fusarium meridionale Causing Fusarium Head Blight of Wheat in MexicoM. Ceron-Bustamante, V. Ayala-Escobar, C. Nava-Diaz, T. J. Ward, G. Leyva-Mir, and H. E. Villasenor-MirM. Ceron-BustamanteSearch for more papers by this author, V. Ayala-EscobarSearch for more papers by this author, C. Nava-DiazSearch for more papers by this author, T. J. WardSearch for more papers by this author, G. Leyva-MirSearch for more papers by this author, and H. E. Villasenor-MirSearch for more papers by this authorAffiliationsAuthors and Affiliations M. Ceron-Bustamante V. Ayala-Escobar C. Nava-Diaz , Instituto de Fitosanidad, Colegio de Postgraduados, Carretera Mexico-Texcoco km 36.5, 56230, Mexico T. J. Ward , Mycotoxin Prevention and Applied Microbiology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Peoria, IL 61604 G. Leyva-Mir , Universidad Autónoma Chapingo. Departamento de Parasitología Agrícola. Carretera Mexico-Texcoco km 38.5, 56230, Mexico H. E. Villasenor-Mir , Instituto de Investigaciones Forestales y Agropecuarias (INIFAP). Campo Experimental Valle de Mexico (CEVAMEX). Carretera Mexico-Texcoco Km 13.5, 56230, Mexico. Published Online:8 Jun 2016https://doi.org/10.1094/PDIS-11-15-1315-PDNAboutSectionsSupplemental ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmailWechat Fusarium head blight (FHB), also known as scab, is a destructive disease of small grain cereals caused by several species belonging to the Fusarium graminearum species complex (FGSC). Members of the FGSC produce trichothecene toxins that represent a threat to human and animal health (Aoki et al. 2012). Despite the global significance of FHB and trichothecene contaminated grain, little is known about the identity of FHB pathogens present in Mexico. During the growing seasons of 2013 and 2014, three wheat heads with symptoms of FHB were collected from each of 40 localities in Tlaxcala, Puebla, and Mexico states. Symptomatic seeds were surface-sterilized for 3 min in 3% sodium hypochlorite and rinsed three times with autoclaved distilled water. Fungi were isolated using the freezing blotter test (Warham et al. 1997). Isolated colonies that resembled Fusarium species were transferred to water agar and subcultured on potato dextrose agar (PDA) plates using a single spore technique. Pathogenicity tests were performed in a greenhouse by using single-floret point inoculation of 45-day-old wheat with a 10 μl suspension of 105 macroconidia/ml. Inoculated heads were covered with a plastic bag for 3 days to ensure infection, and fungi were reisolated from wheat heads showing typical FHB symptoms after 6 days. Multilocus genotyping (MLGT), which uses a set of 52 species or trichothecene genotype-specific probes in a multiplexed allele specific primer extension (ASPE) assay (Ward et al. 2008), was used to determine the species identity and trichothecene type for each of the fungi recovered from the pathogenicity test. Three isolates were identified as F. meridionale with the nivalenol (NIV) trichothecene genotype. These isolates have been deposited in the ARS Culture Collection, Peoria, IL, under NRRL accession numbers F644, F585, and F572. These isolates produced abundant brown aerial mycelium and formed red-brown pigments on PDA after 7 days (12/12 h light cycle and 22°C). The isolates grown on Spezieller Nährstoffarmer agar for 7 days at 25°C under black light produced abundant falcate macroconidia with the dorsal side more curved than the ventral, with 4 to 5 septae, 27 to 46 × 3 to 4 μm. Microconidia were not observed. F. meridionale induced disease severity (AUDPC=200.65, 96.47% infected florets) similar to that of F. graminearum. FHB pathogens with the NIV toxin type are relatively rare in North America, with deoxynivalenol (DON) being far more common; however, NIV is reported to be more toxic to humans and animals (Gale et al. 2011). To the best of our knowledge, this is the first report of F. meridionale in Mexico, or in any production field in North America. Although the isolates described here were obtained from wheat, F. meridionale has frequently been reported in association with maize Fusarium ear rot (Zhang et al. 2014), which is of great concern in Mexico because here it is a staple food.References:Aoki, T., et al. 2012. Mycotoxins. 62:91. https://doi.org/10.2520/myco.62.91 Crossref, Google ScholarGale, L. R., et al. 2011. Phytopathology 101:124. https://doi.org/10.1094/PHYTO-03-10-0067 Link, ISI, Google ScholarWard, T. J., et al. 2008. Fungal Genet. Biol. 45:473. https://doi.org/10.1016/j.fgb.2007.10.003 Crossref, ISI, Google ScholarWarham, E. J., et al. 1997. Ensayos Para la Semilla de Maíz y Trigo, Manuel de Laboratorio. CIMMYT, El Batán, Mexico. Google ScholarZhang, H., et al. 2014. Plant Dis. 98:1156. https://doi.org/10.1094/PDIS-01-14-0108-PDN Link, ISI, Google ScholarDetailsFiguresLiterature CitedRelated Vol. 100, No. 8 August 2016SubscribeISSN:0191-2917e-ISSN:1943-7692 Metrics Article History Issue Date: 22 Jul 2016Published: 8 Jun 2016First Look: 18 Apr 2016Accepted: 5 Apr 2016 Page: 1790 Information© 2016 The American Phytopathological SocietyCited byFirst report of Fusarium meridionale causing canker in hop plants18 May 2022 | Australasian Plant Disease Notes, Vol. 17, No. 1Fusarium meridionaleCABI Compendium, Vol. CABI CompendiumFirst Report of Fusarium Head Blight Caused by Fusarium meridionale in Rice in ChinaFei Dong, Jian Hong Xu, Jian Rong Shi, Mduduzi P. Mokoena, Ademola O. Olaniran, Xin Yuan Chen, and Yin-Won Lee20 August 2020 | Plant Disease, Vol. 104, No. 10" @default.
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