Pleosporales » Leptosphaeriaceae » Alternariaster

Alternariaster helianthi

Alternariaster helianthi (Hansf.) E.G. Simmons, CBS Diversity Ser. (Utrecht) 6: 667 (2007).

≡ Helminthosporium helianthi Hansf., Proc. Linn. Soc. London 155: 49 (1943) [1942-43].

           Index Fungorum number: IF 286912; Facesoffungi number: FoF 11565, Fig. 1

Description: see Alves et al. (2013); Ariyawansa et al. (2015).

Material considered: see Alves et al. (2013); Ariyawansa et al. (2015).

Fig. 1 Alternariaster helianthi (redrawn from Fig. 319 in Ellis 1971). Scale bar: a, b = 500 μm.

Importance and distribution

Alternariaster comprises four species known on four host within Asteraceae, Ambrosia artemisiifolia, Bidens sulphurea, Centaurea diffusa and Helianthus sp. Alternariaster is distributed in Africa (Uganda), Asia (Russia), Europe (Hungary), South America (Brazil) and the United States. Alternariaster helianthi is a pathogen of sunflower, a major oil crop. It causes leaf spot and blight disease which reduces seed germination and seedling survival (Udayashankar et al. 2020).

 

References

Alves JL, Woudenberg JHC, Duarte LL, Crous PW, Barreto RW. 2013 – Reappraisal of the genus Alternariaster (dothideomycetes). Persoonia 31, 77.

Ariyawansa HA, Phukhamsakda C, Thambugala KM, Bulgakov TS et al. 2015 – Revision and phylogeny of Leptosphaeriaceae. Fungal Diversity 74, 19–51.

Ellis MB.1971 – Dematiaceous hyphomycetes. CMI, Kew, England.

Hyde KD, Norphanphoun C, Abreu VP, Bazzicalupo A et al. 2017 – Fungal diversity notes 603–708: Taxonomic and phylogenetic notes on genera and species. Fungal Diversity 87, 1–235.

Udayashankar AC, Chandra Nayaka S, Archana B, Anjana G et al. 2012 – Specific PCR-based detection of Alternaria helianthi: the cause of blight and leaf spot in sunflower. Archives of Microbiology 194, 923–932.

 

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