Keissleriella aesculi
Keissleriella aesculi (Höhn.) Höhn., Sber. Akad. Wiss. Wien, Math. -naturw. Kl., Abt. 1 128(7-8): 582 (1919).
≡ Pyrenochaeta aesculi Höhn., Ber. dt. bot. Ges. 35(3): 249 (1917).
Index Fungorum number: IF 431748; Facesoffungi number: FoF 11559, Fig. 1
Description: see see Tanaka et al. (2015).
Material considered: see see Tanaka et al. (2015).
Fig. 1 Keissleriella spp. (a–l K. spartiicola MFLU 14-0116, holotype). a, b Appearance of ascomata on host substrate. c Peridium. d Section through ascomata. e Cellular pseudoparaphyses. f Close up of periphyses. g, h Asci. i–l Ascospores. (m–v K. dactylidis MFLU 14-0116, holotype). m Appearance of ascomata on host substrate. n Section through ascoma. o Peridium. p Trabeculate pseudoparaphyses. q, r Asci. s–v Ascospores. Scale bars: a = 1000 μm, b, d, f = 200 μm, c = 100 μm, e, q, r, v = 20 μm, g, h, n, p = 50 μm, i–l, o, s–u = 10 μm, m = 400 μm,
Importance and distribution
Species of Keissleriella are saprobic and carry out the decomposition of dead remains of plants and other organic matter in the ecosystem.
Industrial relevance and applications
Keissleriella produces an exopolysaccharide EPS2 exhibiting free radical scavenging and antioxidant activities beneficial in cancer treatment (Sun et al. 2004).
Biochemical importance of the genus, chemical diversity or applications
Keissleriella produces wide range of chemicals. Liu et al. (2002) reported an antifungal metabolite with a new carbon skeleton from Keissleriella sp. Liu et al. (2003) reported an absolute configuration of keisslone, an antimicrobial metabolite from Keissleriella sp. YS4108, a marine filamentous fungus.
There are 46 Keissleriella epithets in Index Fungorum (2022), but several species have been transferred to Etheirophora, Exserohilum, Lentithecium, Lepteutypa, Leptosphaeria and Trichometasphaeria. Keissleriella comprises 37 species known on wide range of plants such as Arundo donax (Poaceae), Carex sp. (Cyperaceae), Elymus arenarius (Poaceae), Festuca capillata (Poaceae), Juncus conglomeratus (Juncaceae), Phleum sp. (Poaceae), Saccharum officinarum (Poaceae), Schoenoplectus lacustris (Cyperaceae), Scirpus lacustris (Cyperaceae), Triticum aestivum (Poaceae), Typha latifolia (Typhaceae) and Uniola latifolia (Poaceae). Keissleriella is known from Asia (India, Pakistan), Europe (Denmark, Italy, Netherlands, Poland, Sweden, Switzerland, United Kingdom) and the United States (Florida, Oklahoma, Virginia).
References
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Liu CH, Liu JY, Huang LL, Zou WX, Tan RX. 2003 – Absolute configuration of keisslone, a new antimicrobial metabolite from Keissleriella sp. YS4108, a marine filamentous fungus. Planta Medica 69, 481–3.
Liu CH, Meng JC, Zou WX, Huang LL, Tang HQ, Tan RX. 2002 – Antifungal metabolite with a new carbon skeleton from Keissleriella sp. YS4108, a marine filamentous fungus. Planta Medica 68, 363–5.
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Singtripop C, Camporesi E, Ariyawansa HA, Wanasinghe DN et al. 2015 – Keissleriella dactylidis, sp nov., from Dactylis glomerata and its phylogenetic placement. Scienceasia 41, 295–304.
Sun C, Wang JW, Fang L, Gao XD, Tan RX. 2004 – Free radical scavenging and antioxidant activities of EPS2, an exopolysaccharide produced by a marine filamentous fungus Keissleriella sp. YS 4108. Life Science 75, 1063–73.
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Zhang Y, Schoch CL, Fournier J, Crous PW et al. 2009 – Multi-locus phylogeny of the Pleosporales: a taxonomic, ecological and evolutionary re-evaluation. Studies in Mycology 64, 85–102.
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