The Biological Cycle of Sporisorium reilianum f.sp. zeae: An Overview Using Microscopy

Martinez, Carole; Roux, Christophe; Jauneau, Alain; Dargent, R.

doi:10.2307/3761784

Cited by 29 publications

(24 citation statements)

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“…Sporisorium reilianum causes head smut of both corn and sorghum (Martinez et al , 2002). Classical genetic studies revealed that S. reilianum is tetrapolar, although molecular characterization of the MAT locus revealed that while the b locus encoding the homeodomain proteins is multiallelic (five alleles), the pheromone/receptor a locus appears to be triallelic, with three different pheromone/receptor loci, a1, a2 and a3 (Fig.…”

Section: Semi‐obligate Pathogenesis: the Smut Fungimentioning

confidence: 99%

Sexual reproduction and dimorphism in the pathogenic basidiomycetes

Morrow¹,

Fraser²

2009

FEMS Yeast Research

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Many fungi in the Basidiomycota have a dimorphic life cycle, where a monokaryotic yeast form alternates with a dikaryotic hyphal form. Most of the dimorphic basidiomycetes are pathogenic on plants, animals or other fungi. In these species, infection of a host appears to be closely linked to both dimorphism and the process of sexual reproduction. Sex in fungi is governed by a specialized region of the genome known as the mating type locus that confers cell-type identity and regulates progression through the sexual cycle. Here we investigate sexual reproduction and lifestyle in emerging human pathogenic yeasts and plant pathogenic smuts of the Basidiomycota and examine the relationship among sex, dimorphism and pathogenesis.

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Section: Semi‐obligate Pathogenesis: the Smut Fungimentioning

confidence: 99%

Sexual reproduction and dimorphism in the pathogenic basidiomycetes

Morrow¹,

Fraser²

2009

FEMS Yeast Research

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“…During infection and colonization of S. reilianum in the floral tissue of maize, one can identify different interactions, which are described as follows: 1) hyphae and cells of host may be associated and alive; 2) hyphae collapse and cells of host remain alive; 3) hyphae and cells of host collapse; and 4) hyphae is viable and colonizes all cells of the host causing tissue death [2]. This plant pathogen has a high compatibility with its host in order to survive until flowering.…”

Section: Pathogenicity Factorsmentioning

confidence: 99%

“…Corn (Zea mays L.) is a crop with a high level of consumption, which is affected by various diseases. Stenocarpella maydis and Sporisorium reilanum are fungi that generate white rot in corn cob and head smut in maize, respectively, both of which are diseases distributed worldwide causing numerous economic losses [1][2][3][4]. S. reilianum is a phytopathogen belonging to the order Ustilaginales, which infect a large number of monocotyledonous and dicotyledonous plants.…”

Section: Introductionmentioning

confidence: 99%

Stenocarpella maydis and Sporisorium reilianum: Two Pathogenic Fungi of Maize

Álvarez-Cervantes¹,

Hernández-Domínguez²,

MauraTellez-Tellez³

et al. 2016

Fungal Pathogenicity

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Stenocarpella maydis and Sporisorium reilianum are phytopathogenic fungi that cause white rot in corn cob and head smut in maize Zea mays L. respectively, diseases that are spread worldwide and cause many economic losses. In this chapter the characteristics of the above diseases, such as their life cycle, pathogenicity factors, control methods, as well as the biotechnological potential of the fungi involved in this processes are described, specifically in connection to their extracellular enzymes.

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“…The infection process occurs during the first 10-20 days after germination via the mesocotyl or root where two sexually compatible basidiospores fuse to form the infective dikaryotic hyphae that penetrate the plant's epidermal cells via appressoria that develop in the tip of the hyphae. Tissue colonization is progressive around the vascular bundles and the mycelium can be observed in all plant tissues (Ghareeb et al, 2011;Álvarez-Cervantes et al, 2016), though the disease does not become evident until the flowering stage, characterized by carbonaceous masses of spores called sori that take the place of normal pollen and grain formation by completely destroying the cob and/or spike (Matyac and Kommedahl, 1985b;Martínez et al, 2002;Ghareeb et al, 2011;Álvarez-Cervantes et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Molecular Variation of the Phytopathogenic Fungus Sporisorium reilianum in Valle del Mezquital, Hidalgo

et al. 2020

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Head smut in maize (Zea mays) is a systemic disease caused by the phytopathogenic fungus Sporisorium reilianum. One of the most severely affected regions in Mexico is Valle del Mezquital in the state of Hidalgo, a high production zone with irrigated agriculture that produces over 50% of maize supplies in the state. This study was designed to analyze the genetic diversity of this phytopathogen isolated from different zones of Valle del Mezquital using the following molecular markers: ITS, aspartyl protease, β-tubulin, and the mitochondrial endonuclease LAGLIDADG. Our objective was to estimate the level of genetic variability in a regional space and understand the evolutionary processes to which non-model organisms are subjected. A total of 53 strains of S. reilianum were isolated from the sampling sites and then purified. A Bayesian Analysis of Population Structure (BAPS) analysis of the genetic structuring allowed us to recover three genetic groupings (K = 3), while molecular variance analysis (AMOVA) showed a very low fixation index (F ST = 0.0146), which was not statistically significant and indicated little between-group genetic differentiation. Also, the value determined for the coefficient of genetic differentiation (Gst) showed little variation among the genetic groups, while the gene flow number (Nm) was 8.25. The Tajima's D estimator and haplotype network recently indicated a rapid population expansion. Together, these results suggest that reproduction and migration are key factors in the evolution and virulence of this fungus.

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The Biological Cycle of Sporisorium reilianum f.sp. zeae: An Overview Using Microscopy

Cited by 29 publications

References 0 publications

Sexual reproduction and dimorphism in the pathogenic basidiomycetes

Sexual reproduction and dimorphism in the pathogenic basidiomycetes

Stenocarpella maydis and Sporisorium reilianum: Two Pathogenic Fungi of Maize

Molecular Variation of the Phytopathogenic Fungus Sporisorium reilianum in Valle del Mezquital, Hidalgo

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