Kabatina
Kabatina R. Schneid. & Arx, Phytopath. Z. 57: 179 (1966).
Index Fungorum number: IF 8657; Facesoffungi number: FoF 00084, 4 morphological species (Species Fungorum 2022), 4 species with molecular data.
Parasitic on branches of Abies, Juniperus, Mahonia, Populus and Thuja. Sexual morph: Unknown. Asexual morph: Mycelium immersed, branched, septate, hyaline to pale brown or black. Conidiomata dark brown to black, sporodochial or acervular, epidermal to subepidermal, pulvinate, pale to dark brown, partially immersed inside the host, composed of branched, septate hyphae, amphigenous or hypophyllous, thick-walled textura angularis. Dehiscence by irregular rupture of the cuticle and epidermis. Conidiophores stromatic or branched, clustered together resembling a synnema, septate, hyaline to pale brown, smooth. Conidiogenous cells enteroblastic, phialidic or percurrent, determinate, cylindrical to doliiform or subclavate, brown to pale brown, channel and collarette minute, periclinal thickening present or absent, borne terminally and intercalary. Conidia hyaline, aseptate, cylindrical to ellipsoid, terminal in basipetal chains or singly, conidial secession schizolytic, smooth (adapted from Thambugala et al. 2014).
Type species: Kabatina thujae R. Schneid. & Arx
Notes: Kabatina is characterised by septate, hyaline to pale brown or black mycelium, sporodochial or acervular conidiomata, stromatic or branched conidiophores, enteroblastic, phialidic or percurrent, conidiogenous cells and hyaline, aseptate, cylindrical to ellipsoid conidia. Butin and Schneider (1976) added K. populi to Kabatina. Consequently, Ramaley (1992) and Butin and Pehl (1993) added K. mahoniae and K. abietis to Kabatina. Tsuneda et al. (2004) reported that Kabatina is closely related to Dothidea hippophaës and D. insculpta in their phylogeny. Bills et al. (2004) confirmed the placement of K. thujae and K. juniperi (CBS 239.66, CBS 4666) in Dothideales based on phylogenetic analysis of ITS data. Wijayawardene et al. (2018) accepted Kabatina under Dothioraceae. Hyde et al. (2013) considered Kabatina as an asexual genus in Dothideaceae. Crous et al. (2018) synonymized Kabatina mahoniae under Dothiora mahoniae. Hongsanan et al. (2020a) followed Hyde et al. (2013) and accepted Kabatina as an asexual genus in Dothideaceae. Kabatina is morphologically and phylogenetically a distinct genus in Dothideaceae but more taxa need to be sequenced for nuclear ribosomal genes and protein-coding genes as only LSU and ITS sequences for K. abietis, K. juniperi, K. mahoniae and K. thujae are available in GenBank.
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