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Charbon du maïs (Ustilago maydis)

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BIOMEDICAL JOURNAL OF SCIENTIFIC & TECHNICAL RESEARCH 26/04/18 Mycosarcoma Maydis (Ustilago Maydis) – Benefits and Harmful Effects of the Phytopathogenic Fungus for Humans. OREGON STATE UNIVERSITY - 2004 - Thèse en ligne : The effect of common corn smut (Ustilago maydis) on sweet corn (Zea mays L.) in the Columbia Basin. NATURE - 2017 - Ustilago maydis effectors and their impact on virulence. PAYSAN BRETON 24/08/17 Du charbon commun sur des épis de maïs. CEBIOGEN IPN VIA YOUTUBE 06/12/16 Seminario departamental - Análisis de la diversidad genética de Ustilago maydis en México. Dr. Juan Manuel González Prieto. IPN eventos en vivo VIA YOUTUBE 13/04/16 Ustilago maydis, DE LA GASTRONOMÍA AL LABORATORIO CIENTÍFICO parte 2. IPN eventos en vivo VIA YOUTUBE 13/04/16 Ustilago maydis, DE LA GASTRONOMÍA AL LABORATORIO CIENTÍFICO parte 1. APS VIA YOUTUBE 02/06/11 Ustilago maydis, infection & disease development in maize & its progenitor teosinte, Suchitra Chavan.

JOVE 01/03/14 A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines. The use of a needle injection method to inoculate maize and teosinte plants with the biotrophic pathogen Ustilago maydis is described.

JOVE 01/03/14 A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines

The needle injection inoculation method facilitates the controlled delivery of the fungal pathogen in between the plant leaves where the pathogen enters the plant through the formation of appresoria. This method is highly efficient, enabling reproducible inoculations with U. maydis. JOVE 30/09/16 Genetic Manipulation of the Plant Pathogen Ustilago maydis to Study Fungal Biology and Plant Microbe Interactions. We describe a robust gene replacement strategy to genetically manipulate the smut fungus Ustilago maydis.

JOVE 30/09/16 Genetic Manipulation of the Plant Pathogen Ustilago maydis to Study Fungal Biology and Plant Microbe Interactions

This protocol explains how to generate deletion mutants to investigate infection phenotypes. It can be extended to modify genes in any desired way, e.g., by adding a sequence encoding a fluorescent protein tag. Date Published: 9/30/2016, Issue 115; doi: 10.3791/54522. MOLECULAR PLANT PATHOLOGY 14/11/16 Maize susceptibility to Ustilago maydis is influenced by genetic and chemical perturbation of carbohydrate allocation. The ability of biotrophic fungi to metabolically adapt to the host environment is a critical factor in fungal diseases of crop plants.

MOLECULAR PLANT PATHOLOGY 14/11/16 Maize susceptibility to Ustilago maydis is influenced by genetic and chemical perturbation of carbohydrate allocation

In this study, we analysed the transcriptome of maize tumours induced by Ustilago maydis to identify key features underlying metabolic shifts during disease. Among other metabolic changes, this analysis highlighted modifications during infection in the transcriptional regulation of carbohydrate allocation and starch metabolism. We confirmed the relevance of these changes by establishing that symptom development was altered in an id1 (indeterminate1) mutant that showed increased accumulation of sucrose as well as being defective in the vegetative to reproductive transition. We further established the relevance of specific metabolic functions related to carbohydrate allocation by assaying disease in su1 (sugary1) mutant plants with altered starch metabolism and in plants treated with glucose, sucrose and silver nitrate during infection. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES - 2017 - Applying Unconventional Secretion in Ustilago maydis for the Export of Functional Nanobodies.

Utrecht University - 2009 - Thèse en ligne : The role of repellents and hydrophobins in Ustilago maydis. Unidad de Tecnología Educativa y Campus Virtual via YOUTUBE 13/04/16 Ustilago maydis, DE LA GASTRONOMÍA AL LABORATORIO CIENTÍFICO. MICROBIOLOGY 01/06/16 Trehalose is required for stress resistance and virulence of the Basidiomycota plant pathogen Ustilago maydis. BIO PROTOCOL 20/03/16 Ustilago maydis Virulence Assays in Maize. The basidiomycetous smut fungus Ustilago maydis (U. maydis) infects all aerial parts of its host plant maize (Zea mays L.).

BIO PROTOCOL 20/03/16 Ustilago maydis Virulence Assays in Maize

Infection symptoms are seen in the form of prominent tumors on all aerial parts of maize, after the establishment of a biotrophic interaction with the host usually around 5-6 days post infection (dpi). The fungus colonizes the various developmentally distinct aerial organs at different stages of development to form these prominent symptoms. Although being a biotrophic plant pathogen, U. maydis can easily be cultivated under axenic conditions to produce a standardized inoculum.

The infections can be carried out under laboratory conditions by syringe inoculation on all the aerial organs of maize. This protocol has been successfully utilized to infect all the aerial organs of maize and formulate the virulence assays in U. maydis making it an excellent model system to study phyto-pathological investigations (Schilling et al., 2014; Redkar et al., 2015).

PLOS 22/06/16 The WOPR Protein Ros1 Is a Master Regulator of Sporogenesis and Late Effector Gene Expression in the Maize Pathogen Ustilago maydis. Abstract The biotrophic basidiomycete fungus Ustilago maydis causes smut disease in maize.

PLOS 22/06/16 The WOPR Protein Ros1 Is a Master Regulator of Sporogenesis and Late Effector Gene Expression in the Maize Pathogen Ustilago maydis

Hallmarks of the disease are large tumors that develop on all aerial parts of the host in which dark pigmented teliospores are formed. Current Opinion in Microbiology Volume 34, December 2016 Cell biology of corn smut disease — Ustilago maydis as a model for biotrophic interactions. MOLECULAR PLANT PATHOLOGY 08/08/16 Characterization of ApB73, a virulence factor important for colonization of Zea mays by the smut Ustilago maydis. Summary The biotrophic fungus Ustilago maydis, the causal agent of corn smut disease, uses numerous small secreted effector proteins to suppress plant defence responses and reshape the host metabolism.

MOLECULAR PLANT PATHOLOGY 08/08/16 Characterization of ApB73, a virulence factor important for colonization of Zea mays by the smut Ustilago maydis

However, the role of specific effectors remains poorly understood. Here, we describe the identification of ApB73 (Apathogenic in B73), an as yet uncharacterized protein essential for the successful colonization of maize by U. maydis. We show that apB73 is transcriptionally induced during the biotrophic stages of the fungal life cycle. The deletion of the apB73 gene results in cultivar-specific loss of gall formation in the host. Introduction Biotrophic pathogens require a living host to complete their life cycle. Despite the vital role of effectors for pathogenicity, the actual deletion of many does not necessarily lead to impaired virulence of the pathogen (Kämper et al., 2006; Lindeberg et al., 2012; Saitoh et al., 2012; Schilling et al., 2014).

Results. Food Control Volume 71, January 2017, Mycotoxin contamination in corn smut (Ustilago maydis) galls in the field and in the commercial food products. A Biological Control of Pests Research Unit, US Department of Agriculture, Agricultural Research Service, Stoneville, MS, 38776, USAb Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota, Minneapolis, MN, 55455, USAc Department of Biochemistry, School of Chemistry, UNAM, 04510, Mexico, D.F., Mexicod Crop Genetic Systems Research Unit, US Department of Agriculture, Agricultural Research Service, Stoneville, MS, 38776, USAe Department of Agricultural Sciences, University of Bologna, Bologna, 40127, Italyf Crop Production Systems Research Unit, US Department of Agriculture Agricultural Research Service, Stoneville, MS, 38776, USA Received 21 March 2016, Revised 13 May 2016, Accepted 8 June 2016, Available online 11 June 2016 Choose an option to locate/access this article:

Food Control Volume 71, January 2017, Mycotoxin contamination in corn smut (Ustilago maydis) galls in the field and in the commercial food products

MOLECULAR PLANT PATHOLOGY 18/04/15 Virulence of the maize smut Ustilago maydis is shaped by organ-specific effectors. Fungal Genet Biol. 2016 Apr;89:3-9. Genome editing in Ustilago maydis using the CRISPR-Cas system. JOURNAL OF AGRICULTURAL RESEARCH - JULY 2015 - First Report of Ustilago maydis (Pers.) Roussel the Causal Agent of Smut of Corn,Zeamays (L.) Pers. In South Sudan: A note. UNIVERSITY OF GEORGIA 01/03/14 A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines.

Molecular Plant Pathology . 02/2014; Virulence of the maize smut Ustilago maydis is shaped by organ-specific effectors. Fungal Biology Volume 119, Issues 2–3, March 2015, Assessment of Ustilago maydis as a fungal model for root infection studies. WIKIPEDIA ESPAGNOL - Ustilago maydis. Etimología[editar] Luis Cabrera, en su Diccionario de aztequismos, afirma que la palabra huitlacoche o huitacoche es una forma errónea derivada de cuitlacoche, que hace referencia a un ave (Harporhynchus longirostris Schl) que se alimenta al ras del suelo de la milpa.

WIKIPEDIA ESPAGNOL - Ustilago maydis.

Esta ave tendría la costumbre de dormir sobre los estercoleros del ganado, de donde le vendría el nombre, de cuítlatl, excremento, y cochi, dormir. La semejanza de la mazorca infectada con Ustilago maydis con esta ave es quizá la causa de que este término se aplique como nombre al hongo. La palabra cuitlacoche deriva del Nahuatl clásico Cuitlacochi, compuesto de las raíces "cuitlatl" y "cochi". Características[editar] El Ustilago maydis ataca potencialmente todas las porciones de la planta, pero ocurre con más frecuencia en los elotes tiernos. La difusión de dichas esporas es a través del viento, la lluvia, el agua de riego o por contacto.

Huitlacoche fresco a la venta en un supermercado mexicano Gastronomía[editar] WIKIPEDIA - Corn smut. Etymology[edit] In Mexico, corn smut is known as huitlacoche [wit͡ɬakot͡ʃe], sometimes spelled cuitlacoche).

WIKIPEDIA - Corn smut.

This word entered Spanish in Mexico from classical Nahuatl, though the Nahuatl words from which huitlacoche is derived is debated. In modern Nahuatl, the word for huitlacoche is cuitlacochin [kʷit͡ɬɑˈkot͡ʃin], and some sources deem cuitlacochi to be the classical form.[2] Some sources wrongly give the etymology as coming from the Nahuatl words cuitlatl [ˈkʷit͡ɬɑ] ("excrement" or "rear-end", actually meaning "excrescence") and cochi [ˈkot͡ʃt͡ɬi] (cochi="to sleep"), thus giving a combined mismeaning of "sleeping/hibernating excrement".,[2][3] but actually meaning "sleeping excrescence", referring to the fact that the fungus grows in between the corns and impedes them from developing, thus they remain "sleeping".

Characteristics[edit] Biology[edit] Life cycle[edit] WIKIPEDIA – Charbon du maïs. Un article de Wikipédia, l'encyclopédie libre.

WIKIPEDIA – Charbon du maïs.

Le charbon du maïs est une maladie du maïs causé par un champignon pathogène, Ustilago maydis[1]. Au Mexique, les grains infectés sont appelés huitlacoche ; ils sont considérés comme un mets recherché[2],[3]. Réponses agricoles[modifier | modifier le code] Czech J. Genet. Plant Breed., 42, 2006 Root Penetration of Maize by Ustilago maydis. Trends Cell Biol. 2008 Feb;18(2):61-67. Ustilago maydis, a new fungal model system for cell biology.

INSTITUT DE L ELEVAGE - Distribution d'un maïs ensilé avec du charbon. Certaines parcelles de maïs sont fortement attaquées par le charbon. INRA - Charbon à Ustilago. Fungal Genetics and Biology 49 (2012) 578–587 Interactions between Fusarium verticillioides, Ustilago maydis, and Zea mays: An e. Sex Plant Reprod (2010) 23:1–13 Maize host requirements for Ustilago maydis tumor induction. MOLECULAR PLANT PATHOLOGY - 2012 - The Top 10 fungal pathogens in molecular plant pathology.