and related genera, causing seed rot, seedling and leaf blight diseases. Maize and sor-ghum are two of the most important cereal crops and are both susceptible to E. turcicum. Exserohilum Scientific classification Kingdom: Fungi Division: Ascomycota Class: Dothideomycetes Order: Pleosporales Family: Pleosporaceae Genus: Exserohilum K.J.Leonard & Suggs Type species Exserohilum turcicum K.J.Leonard & Suggs Species See text Exserohilum is a genus of fungi in the family Pleosporaceae. Exserohilum turcicum (Pass.) epitype of Exserohilum turcicum: CBS:H:23323 lectotype of Exserohilum turcicum: BPI:431157 culture from epitype of Exserohilum turcicum: CBS:690.71 [8], Leonard KJ, Levy Y, Smith DR. 1989. Proposed nomenclature for mating type genes of filamentous Ascomycetes. The "perfect stage" (sexual stage or teleomorph) was first described in 1958. Exserohilum turcicum (Pass.) Oblong lesions develop on leaf tissue after infection by the NCLB fungus, Exserohilum turcicum. Agr. Among the isolates of Pseudomonas fluorescens studied, maximum inhibition of mycelial growth of 71.48 per cent was … Setosphaeria turcica (Luttr.) Management of Turcicum leaf blight [Exserohilum turcicum (Pass.) proposed to recognize and classify four types of (Exserohilum turcicum, brown spot, gray spot, curvularia lunata and round spot) maize leaf diseases that occurred in china farm area. Northern leaf blight (NLB) caused by Exserohilum turcicum is a significant fungal disease of maize. Parmense: 3 (1876). The species also have an olivaceous to black reverse. A series of maize diseases images (JPG Seed Research, … The end cells are paler and the walls finely roughened. Incidence of leaf blight (Exserohilum turcicum (Pass.) b. Conidiophores and conidia on leaf surface of Zea mays. K. J. Leonard & Suggs 1974. The Exserohilum species are known for causing blight and human immune system diseases. 40, No. Helminthosporium turcicum Pass) [teleomorph Setosphaeria turcica (Lutterell), synon. Proposed Nomenclature for pathogen races of, https://en.wikipedia.org/w/index.php?title=Setosphaeria_turcica&oldid=987840391, Taxonbars with automatically added basionyms, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 November 2020, at 15:30. Variability in Exserohilum turcicum (Pass.) The inbred mapping (IBM) population, an advanced inter-cross RIL population, derived from a cross between Mo17 and B73 lines, was evaluated for NLB resistance. Biological control as a … [4], As of October 2015[update], Index Fungorum lists 26 valid species of Exserohilum:[5], Infection cases caused by exposure to Exserohilum are rare, but it's the most well studied detail of the fungi. The damage can be of up to 50% (11), depending … These diseases, northern leaf blight and com-mon rust respectively, are presented each year with different levels of severity affecting significantly the yield in susceptible hybrids. [3] Genotyping of isolates sampled from the eastern United States later revealed that while Race 0 was predominant in the mid-1970s, Race 1 spread rapidly, becoming the most prevalent race in the region by the mid-1990s. turcicum were observed on sorghum plants in the winter (February). It is cosmopolitan in nature inhabiting plant material, particularly grasses, and soil. Exserohilum turcicum primarily reproduces asexually, forming conidia as the primary and secondary inoculum (Carson, 2016). Jain, (1966) races) of the Exserohilum turcicum fungus. figure 1. The sexual reproductive (or ascigerous) states of Exserohilum species are known as Setosphaeria. Northern Leaf Blight caused by Exserohilum turcicum is the most significant disease in corn growing fields. [1], Exserohilum has a cosmopolitan distribution, with its species found naturally in warm, tropical, and subtropical locations. 2000. Exserohilum turcicum (sexual stage Setosphaeria turcica) is the hemibiotrophic causal agent of northern leaf blight of maize and sorghum. Severe losses in grain yield of maize crop due to epidemics of turcicum leaf blight disease and these losses up to 25 to 90 % depending upon the severity of the disease (Chenulu and Hora, 1962; Jha, 1993). Memoona Ilyas, ... Abdul Mujeeb-Kazi, in Emerging Technologies and Management of Crop Stress Tolerance, Volume 2, 2014. Known occurrences, collected specimens and observations of Exserohilum turcicum (Pass.) In: Species 2000 & ITIS Catalogue of Life", "Phaeohyphomycosis of the nasal sinuses caused by a new species of, https://en.wikipedia.org/w/index.php?title=Exserohilum&oldid=980311584, Articles containing potentially dated statements from October 2015, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License, This page was last edited on 25 September 2020, at 19:55. of maize in relation to meteorological factors. K.J.Leonard & Suggs, 1974. Before applying a control method, it is essential to focus on factors that lead to the survival and conservation of E. turcicum inoculum. Leonard and Suggs.) Exserohilum turcicum is an important pathogen of both sorghum and maize, causing sorghum leaf blight and northern corn leaf blight. e. I Immature and mature conidia. Setosphaeria turcica. MicroRNAs (miRNAs) have been recently reported as gene expression regulators related to several stress responses; however, evidence of the role of miRNAs in plant response to biotic stresses is limited. E. turcicum is a fungal phytopathogen causing T urcicum Leaf Blight and responsible for a severe loss of yield in Maize. Helminthosporium turcicum Pass) [teleomorph Setosphaeria turcica (Lutterell), synon. Setosphaeria turcica (anamorph Exserohilum turcicum; formerly known as Helminthosporium turcicum) is the causal agent of northern corn leaf blight in maize. Northern leaf blight, caused by the fungus Exserohilum turcicum (Pass. epitype of Exserohilum turcicum: CBS:H:23323 lectotype of Exserohilum turcicum: BPI:431157 culture from epitype of Exserohilum turcicum: CBS:690.71 In temperate populations, in contrast, there was low genetic diversity, high amounts of linkage disequilibrium, and a single dominant mating type, which suggests infrequent sexual mating. [1] For example, the maize gene Ht1 does not confer resistance against a Race 1 isolate, while genes Ht2 and/or Ht3 do. c. Conidiophores. It was grown at 10–45 C (optimum 30 C), pH 5–10 (optimum pH 8), and 0–4% (w/v) NaCl (optimum 1%). These one-celled reproductive units are concave and can be seen in the suspensor. The researchers followed the following steps to recognize and identify the above maize leaf diseases. However, there is little in … Influence of Crop Residues, Matric Potential and Temperature on Growth of Exserohilum Turcicum an … Taxonomic classification. Gowda K T P, Shetty H S, Gowda B J, Sangamlal, 1995. Exserohilum turcicum (Pass.) View this species on GBIF All possible crosses between four corn inbred lines known to differ in expansion curve appeared to be under host genotype control. d. Conidiophore and conidium. Et al., 2010 ) during to form chlamydospores within cells of the disease has appeared in... 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