Paraphaeosphaeria michotii
Paraphaeosphaeria michotii (Westend.) O.E. Erikss., Arch. Botan. 6: 405 (1967).
≡ Sphaeria michotii Westend., Bull. Acad. R. Sci. Belg., Cl. Sci., sér. 2 7(5): 87 (1859).
Index Fungorum number: IF 335615; Facesoffungi number: FoF 00058, Fig. 1
Description: see Verkley et al. (2014), Ariyawansa et al. (2014), Wanasinghe et al. (2018).
Material considered: see Verkley et al. (2014), Ariyawansa et al. (2014), Wanasinghe et al. (2018).
Fig. 1 Paraphaeosphaeria michotii (MFLU 12-2210, epitype). a Appearance of ascomata on host substrate. b Section through ascomata. c Peridium. d, e Asci. f–i Ascospores. Scale bars: b = 100 μm, c–e = 50 μm, f–i = 10 μm.
Importance and distribution
Industrial relevance and applications
Paraphaeosphaeria is useful to the pharmaceutical industry as it produces several compounds such as hexaketides, diketopiperazine amongst others (Seo et al. 2007, Carrieri et al. 2020).
Biochemical importance of the genus, chemical diversity or applications
Lee and Oh (2006) reported two fungal metabolites 2,3-didehydropalitantin and culpin-1- β-galactopyranoside from an epiphytic Paraphaeosphaeria species. Li et al. (2017) reported NF-κB inhibitors, unique γ-pyranol-γ-lactams with sulfide and sulfoxide moieties from P. neglecta FT462 isolated from Hawaiian Lycopodiella cernua. Huang et al. (2017) reported sphaerialactonam, a γ-lactam–isochromanone from the Hawaiian endophytic Paraphaeosphaeria sp. FT462. Murakami et al. (2020) discovered a new compound, talarodone A, together with five known compounds 2–6 in a co-culture of Talaromyces pinophilus and Paraphaeosphaeria sp. isolated from soil in Japan. Hu et al. (2020) reported paraverrucsins A–F, antifeedant, and antiPathogenic polyketides from rhizospheric P. verruculosa and reported induced bioactivity enhancement when cocultured with the host plant Dendrobium officinale.
There are forty Paraphaeosphaeria epithets in Index Fungorum (2022), but several species have been transferred to Chaetoplea, Leptosphaeria, Neophaeosphaeria and Phaeosphaeriopsis. Paraphaeosphaeria comprises 29 species known on wide range of plants including Agrostis capillaris (Poaceae), Ammophila arenaria (Poaceae), Andropogon virginianus (Poaceae), Bromus diandrus (Poaceae), Carex sp. (Cyperaceae), Chasmanthium latifolium (Poaceae), Deschampsia flexuosa (Poaceae), Dichanthelium acuminatum (Poaceae), Juncus sp. (Juncaceae), Lathyrus niger (Fabaceae), Leersia oryzoides (Poaceae), Miscanthus sinensis (Poaceae), Nardus stricta (Poaceae), Phalaris arundinacea (Poaceae), Phleum pratense (Poaceae) and Phragmites australis (Poaceae). Some species of Paraphaeosphaeria causes leaf spot and other diseases, for example, P. recurvifoliae causes leaf spot and necrosis on Yucca gloriosa (Asparagaceae) in China and Poland (Pieczul & Perek 2015, Ding et al. 2020). Paraphaeosphaeria sp. is reported to cause walnut bark lesions (Mazzaglia et al. 2005). Paraphaeosphaeria has wide distribution such as Asia (China (Taiwan), Japan, Russia), Australia, Europe (Austria, Belgium, France, Germany, Poland, Sweden), North America (Canada) and The United States (Texas, Virginia). Future studies are likely to discover more species of Paraphaeosphaeria.
References
Eriksson OE. 1967 – On graminicolous pyrenomycetes from Fennoscandia. 2. Phragmosporous and scolecosporous species. Arkiv för Botanik 6, 381–440.
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