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

Abstract : 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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https://hal.univ-angers.fr/hal-03448571
Contributeur : Nelly Bataillé-Simoneau Connectez-vous pour contacter le contributeur
Soumis le : jeudi 25 novembre 2021 - 11:22:27
Dernière modification le : mercredi 30 mars 2022 - 17:48:03
Archivage à long terme le : : samedi 26 février 2022 - 18:37:41

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Nabahat Bessadat, Bruno Hamon, Nelly Bataillé-Simoneau, Kihal Mabrouk, Philippe Simoneau. Characterization of New Small-Spored Alternaria Species Isolated from Solanaceae in Algeria. Life, MDPI, 2021, 11 (12), pp.1291. ⟨10.3390/life11121291⟩. ⟨hal-03448571⟩

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