<p><strong><em>Alternaria telliensis sp. nov</em>., a new species isolated from <em>Solanaceae</em> in Algeria</strong></p>

Abstract

During a biodiversity survey of Alternaria associated with leaf spot and blight of Solanaceae, a large collection of strains was obtained from samples collected in north-western regions of Algeria in 2013–2018 growing seasons. Amongst these strains, three isolates recovered from tomato and potato had morphological traits different from that usually observed for Alternaria species previously reported on Solanaceae. Based on analysis of a sequence dataset corresponding to portions of the glyceraldehyde-3-phosphate dehydrogenase (gpd), translation elongation factor 1-alpha (tef1) and RNA polymerase second largest subunit (rpb2) genes along with morphological observations, isolates were identified as a new species in the section Japonicae. This novel species, described here as Alternaria telliensis, is phylogenetically and morphologically distinct from A. japonica and A. nepalensis in this section. Pathogenicity tests were performed and isolates were found to be weakly pathogenic to tomato and potato (Solanaceae) while highly aggressive on radish, cabbage and turnip (Brassicaceae) plants.

Incidence of Alternaria Species Associated with Watermelon Leaf Blight in Korea

“…To complement morphological trait analysis, phylogenetic analysis after combining DNA sequences has been suggested (Kang et al, 2001). Previously, the Alternaria species had been successfully differentiated using the ITS region, GAPDH, and RPB2 (Bessadat et al, 2020;Blagojević et al, 2020;Lawrence et al, 2016;Woudenberg et al, 2013). However, our results suggested that each of them and the combination of their sequences were not competent to differentiate the Alternaria spp.…”

“…The amplicon lengths of GAPDH and RPB2 varied among some of Alternaria spp. associated with leaf spot and leaf blight disease in Solanaceae and Brassica (Bessadat et al, 2020;Blagojević et al, 2020;Lawrence et al, 2016). Although the sequences of GAPDH and RPB2 were not identical among four isolates and references retrieved from GenBank, none of the variations was specific for the Alternaria spp.…”

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

“…At least five large-spored species from section Porri, i.e., A. solani, A. linariae, A. protenta, A. grandis and A. crassa, and two small-spored species from section Alternaria have been characterized from symptomatic tomato tissues [14,30,57]. Recently, A. telliensis, a new species from section Japonicae was also isolated from tomato [26]. The importance of the small-spored Alternaria species of section Alternaria in the development of foliar diseases in Solanaceae has been demonstrated in Algeria [14,18].…”

“…Nevertheless, concerning tomato, members of at least seven out of the 28 sections described within the genus Alternaria [21,22] have been associated with foliar diseases. Besides the large-spored species of the section Porri and the members of the section Alternaria (A. alternata, A. arborescens, A. tomato), this includes the following species: A. mimicula (section Brassicicola) [23], A. consortialis (section Ulocladioides) [14], A. infectoria (section Infectoriae) [24], A. chlamydosporigena (section Embellisia) [25] and more recently A. telliensis (section Japonicae) [26].…”

Morphological and molecular identification of two new Alternaria species (Ascomycota, Pleosporaceae) in section Radicina from China

“…In recent studies, both morphological and molecular analyses were used for the delimitation of the genus Alternaria, which has been divided into 28 sections and eight monotypic lineages (Woudenberg et al 2013;Lawrence et al 2016;Ghafri et al 2019;Marin-Felix et al 2019). The number of Alternaria species has been continuously growing after re-descriptions and new discovery (Deng et al 2018;Ahmadpour 2019: Liu et al 2019Tao et al 2019;Bessadat et al 2020;He et al 2020). Coincidentally, several phylogenetic lineages have strongly supported morphology-based sections but others not (Simmons 2007;Woudenberg et al 2015).…”