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Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria

Although large-spored Alternaria species of the section Porri are considered to be the major agents responsible for leaf spot and blight of Solanaceae, small-spored Alternaria species are also frequently isolated from symptomatic tissues. A survey of the north-western regions of Algeria during the 2...

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Autores principales: Bessadat, Nabahat, Hamon, Bruno, Bataillé-Simoneau, Nelly, Mabrouk, Kihal, Simoneau, Philippe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704928/
https://www.ncbi.nlm.nih.gov/pubmed/34947822
http://dx.doi.org/10.3390/life11121291
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author Bessadat, Nabahat
Hamon, Bruno
Bataillé-Simoneau, Nelly
Mabrouk, Kihal
Simoneau, Philippe
author_facet Bessadat, Nabahat
Hamon, Bruno
Bataillé-Simoneau, Nelly
Mabrouk, Kihal
Simoneau, Philippe
author_sort Bessadat, Nabahat
collection PubMed
description Although large-spored Alternaria species of the section Porri are considered to be the major agents responsible for leaf spot and blight of Solanaceae, small-spored Alternaria species are also frequently isolated from symptomatic tissues. A survey of the north-western regions of Algeria during the 2017–2018 growing seasons revealed that amongst the 623 Alternaria isolates from tomato, potato, pepper, eggplant and black nightshade, 8% could not be morphologically assigned to either section Porri or section Alternaria. In order to more precisely determine the taxonomic position of these isolates, detailed morphological characterizations and multi-locus phylogenetic analyses were performed. Based on these analyses, the isolates were grouped into four main clades: section Ulocladioides, section Infectoriae, including two new species, section Embellisioides, and section Eureka, including one new species. These isolates were also characterized for their virulence under green-house conditions. They were able to produce leaf spot symptoms on tomato plants but with variable levels.
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spelling pubmed-87049282021-12-25 Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria Bessadat, Nabahat Hamon, Bruno Bataillé-Simoneau, Nelly Mabrouk, Kihal Simoneau, Philippe Life (Basel) Article Although large-spored Alternaria species of the section Porri are considered to be the major agents responsible for leaf spot and blight of Solanaceae, small-spored Alternaria species are also frequently isolated from symptomatic tissues. A survey of the north-western regions of Algeria during the 2017–2018 growing seasons revealed that amongst the 623 Alternaria isolates from tomato, potato, pepper, eggplant and black nightshade, 8% could not be morphologically assigned to either section Porri or section Alternaria. In order to more precisely determine the taxonomic position of these isolates, detailed morphological characterizations and multi-locus phylogenetic analyses were performed. Based on these analyses, the isolates were grouped into four main clades: section Ulocladioides, section Infectoriae, including two new species, section Embellisioides, and section Eureka, including one new species. These isolates were also characterized for their virulence under green-house conditions. They were able to produce leaf spot symptoms on tomato plants but with variable levels. MDPI 2021-11-24 /pmc/articles/PMC8704928/ /pubmed/34947822 http://dx.doi.org/10.3390/life11121291 Text en © 2021 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
Bessadat, Nabahat
Hamon, Bruno
Bataillé-Simoneau, Nelly
Mabrouk, Kihal
Simoneau, Philippe
Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria
title Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria
title_full Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria
title_fullStr Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria
title_full_unstemmed Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria
title_short Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria
title_sort characterization of new small-spored alternaria species isolated from solanaceae in algeria
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704928/
https://www.ncbi.nlm.nih.gov/pubmed/34947822
http://dx.doi.org/10.3390/life11121291
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