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Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew

Sclerospora graminicola is primarily heterothallic in nature with two distinct mating types (G(1) and G(2)); however, homothallism does exist in the pathogen populations. In this study, a cross was made between two self-sterile isolates (Sg 019, Mat-2, G(2) × Sg 445-1, Mat-1, G(1)) of S. graminicola...

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Autores principales: Raj, Chandramani, Sharma, Rajan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9224867/
https://www.ncbi.nlm.nih.gov/pubmed/35736112
http://dx.doi.org/10.3390/jof8060629
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author Raj, Chandramani
Sharma, Rajan
author_facet Raj, Chandramani
Sharma, Rajan
author_sort Raj, Chandramani
collection PubMed
description Sclerospora graminicola is primarily heterothallic in nature with two distinct mating types (G(1) and G(2)); however, homothallism does exist in the pathogen populations. In this study, a cross was made between two self-sterile isolates (Sg 019, Mat-2, G(2) × Sg 445-1, Mat-1, G(1)) of S. graminicola and a total of 39 F(1) progenies were established. The study on sexual compatibility types in F(1) progenies was conducted by crossing each F(1) progeny with both the parents (Sg 445-1, Mat-1, G(1); and Sg 019, Mat-2, G(2)). The results revealed the presence of four sexual compatibility types, viz. G(1), G(2), G(1)G(2) and G(0) (neuter) in the progenies. The G(1)G(2) progenies that produced oospores with both the parents were found as self-fertile (homothallic) and self-sterile (heterothallic) types. Similarly, self-fertile parental type G(1) and G(2) progenies were designated as secondary homothallic, whereas self-sterile parental type G(1) and G(2) progenies were of heterothallic type. The result of the present study revealed Mendelian segregation of mating type locus in S. graminicola which indicates that sexual reproduction plays an important role in the evolution of new genetic recombinants in the pathogen. The study also helps in understanding the genetic structure of S. graminicola populations and potential for possible evolution of new virulences in the pathogen.
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spelling pubmed-92248672022-06-24 Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew Raj, Chandramani Sharma, Rajan J Fungi (Basel) Article Sclerospora graminicola is primarily heterothallic in nature with two distinct mating types (G(1) and G(2)); however, homothallism does exist in the pathogen populations. In this study, a cross was made between two self-sterile isolates (Sg 019, Mat-2, G(2) × Sg 445-1, Mat-1, G(1)) of S. graminicola and a total of 39 F(1) progenies were established. The study on sexual compatibility types in F(1) progenies was conducted by crossing each F(1) progeny with both the parents (Sg 445-1, Mat-1, G(1); and Sg 019, Mat-2, G(2)). The results revealed the presence of four sexual compatibility types, viz. G(1), G(2), G(1)G(2) and G(0) (neuter) in the progenies. The G(1)G(2) progenies that produced oospores with both the parents were found as self-fertile (homothallic) and self-sterile (heterothallic) types. Similarly, self-fertile parental type G(1) and G(2) progenies were designated as secondary homothallic, whereas self-sterile parental type G(1) and G(2) progenies were of heterothallic type. The result of the present study revealed Mendelian segregation of mating type locus in S. graminicola which indicates that sexual reproduction plays an important role in the evolution of new genetic recombinants in the pathogen. The study also helps in understanding the genetic structure of S. graminicola populations and potential for possible evolution of new virulences in the pathogen. MDPI 2022-06-13 /pmc/articles/PMC9224867/ /pubmed/35736112 http://dx.doi.org/10.3390/jof8060629 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Raj, Chandramani
Sharma, Rajan
Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew
title Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew
title_full Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew
title_fullStr Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew
title_full_unstemmed Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew
title_short Sexual Compatibility Types in F(1) Progenies of Sclerospora graminicola, the Causal Agent of Pearl Millet Downy Mildew
title_sort sexual compatibility types in f(1) progenies of sclerospora graminicola, the causal agent of pearl millet downy mildew
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9224867/
https://www.ncbi.nlm.nih.gov/pubmed/35736112
http://dx.doi.org/10.3390/jof8060629
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