Kabatiella microsticta
Kabatiella microsticta Bubák, Hedwigia 46: 297 (1907).
Index Fungorum number: IF 176942; Facesoffungi number: FoF 00104, Fig. 1
Description:
Associated with leaf spot. Sexual morph: Unknown. Asexual morph: Conidiomata sporodochia or acervuli, stromata, pale or pale brown. Conidiophores and conidiogenous cells not observed. Conidia 4−5 × 5−7 µm (x̄ = 4.6 × 5.9 µm, n = 10) clustered or solitary, aseptate, hyaline, oblong to cylindrical.
Material considered: Germany, on leaves, 11 July 1925, P. Sydow (BR50200152286935).
Fig. 1 Kabatiella microsticta (BR50200152286935). a–d Herbarium material and appearance of fruiting body on the host surface. e Squash mount of conidioma. f Section through conidioma. g–i Conidia. Scale bars: c = 5000 μm, d = 1000 μm, e, f = 100 μm, g = 20 μm, h, i = 10 μm.
Importance and distribution
Species of Kabatiella are pathogenic causing leaf spots. There are 34 Kabatiella epithets in Index Fungorum (2022), but several species have been transferred to other genera such as Aureobasidium, Microstroma and Sarcotrochila. Kabatiella comprises 18 species known on a wide range of plants such as Abies (Pinaceae), Acer (Sapindaceae), Berberis (Berberidaceae), Betula (Betulaceae), Bupleurum (Apiaceae), Lespedeza (Fabaceae), Melilotus (Fabaceae), Phyllanthus (Phyllanthaceae), Salix sp. (Salicaceae), Trifolium (Fabaceae). Kabatiella is reported from several countries such as Asia (China, Japan), Australia, Europe (Germany, Poland, Portugal, Spain) and North America (Canada, The United States). Fresh collections and sequence data are needed for species of Kabatiella in future studies.
Quarantine significance
Kabatiella causes several diseases such as corn eyespot disease, sorghi leaf blight, leaf scorch (Pronczuk 1994) and is of quarantine significance.
Biochemical importance of the genus, chemical diversity or applications
Massoia lactone and its hydroxy-derivative was reported from K. caulivora (Laili et al. 2017). Cold-adapted recombinant laccase KbLcc1 was reported from K. bupleuri and is useful as a green catalyst in biotransformation (Wiśniewska et al. 2021).
References
Bubák F. 1907 – Mykologische Beitrage IV. Hedwigia 46, 297.
Hermanides-Nijhof EJ. 1977 – Aureobasidium and allied genera. Studies in Mycology 15, 141–222.
Pronczuk M, Bojanowski J, Warzecha R 1994 – Eyespot: a new foliage disease of maize in Poland. Genetica Polonica 35B, 361–366.
Sivanesan A. 1984 – The bitunicate ascomycetes and their anamorphs. J Cramer.
Thambugala K, Ariyawansa H, Li Y, Boonmee S et al. 2014 – Dothideales. Fungal diversity 68, 105–158.
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