Stenocarpella

Stenocarpella Syd. & P. Syd., Annls mycol. 15(3/4), 258 (1917)

Citation when using this entry, Chen C. et al. in prep. – Fungalpedia, genera of Coelomycetes. Mycosphere

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification, Diaporthaceae, Diaporthales ,Sordariomycetes, Ascomycota, Fungi

Endophytic, saprobic or pathogenic fungi of a range of host plants. The sexual morph is undetermined. The asexual morph is charactrised by subcuticular conidiomata, which is pycnidial, dark brown, separate or occasionally confluent, globose or elongated, subepidermal, unilocular, thick-walled, ostiolate. Ostiole papillate, single, circular. Conidiomata wall composed of thick-walled textura angularis. Conidiophores usually reduced to conidiogenous cells. Conidiogenous cells enteroblastic, phialidic, determinate, cylindrical, discrete, collarette and channel minute, periclinal wall thickened. Conidia pale brown, cylindrical or subcylindrical to narrowly ellipsoid, fusiform, straight or curved, apex obtuse, base tapered and truncate, thick-walled, smooth, eguttulate, 0–3-septate (Sutton 1980; Lamprecht et al. 2011).

Type species: Stenocarpella macrospora (Earle) B. Sutton, Mycol. Pap. 141, 202 (1977)

≡ Diplodia macrospora Earle, Bull. Torrey bot. Club 24, 29 (1897)

= Stenocarpella zeae Syd. & P. Syd., Annls mycol. 15(3/4), 258 (1917)

Notes: Stenocarpella was introduced by Sydow and Sydow (1917), and S. zeae was treated as the type species. However, Sutton (1977) treated S. macrospora as the new type species because Diplodia macrospora is the oldest name for Stenocarpella zeae. Three species are accepted in this genus, whereas Sutton (1980) introduced S. maydis, and Jia et al. (2023) introduced S. chrysopogonis. Stenocarpella macrospora was treated as Diplodia by Sutton (1964) and S. maydis was treated as Macrodiplodia by Petrak and Sydow (1927), Whereas, these two species were transferred to Stenocarpella by Sutton (1977, 1980). Both Stenocarpella macrospora and S. maydis are pathogens of corn, the causal agent of stalk and ear rot, leaf spot and seeding blight (Latterell 1983; da Silva Siqueira et al. 2014). Stenocarpella chrysopogonis can cause leaf streak disease of Chrysopogon zizanioides (Jia et al., 2023). Crous et al. (2006) revealed Stenocarpella to belong to the Diaporthales based on LSU sequence data. Lamprecht et al. (2011) and Wijayawardene et al. (2016) also agree with Crous et al. (2006) and further confirm the placement in Diaporthaceae based on ITS and LSU sequence data. Currently two species are accepted in Stenocarpella in Species Fungorum (May, 2024) and molecular data are available for all three species in Genbank (May, 2024). Currnent taxonomic treatment of this genus is Diaporthaceae, in Diaporthales (Sordariomycetes) (Wijayawardene et al. 2020).

For all accepted species: search in Species Fungorum Stenocarpella.