Bryoparasitic Pezizales

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 Bryophile Pezizales > Species > Octospora doebbeleri


Octospora doebbeleri Sochorová & Eckstein
Sydowia 73: 239 (2021)
MycoBank: MB 836340

Type: Czech Republic, 'Hamr na Jezeře (Liberec region, Česká Lípa district), Děvín a Ostrý NM, on Dicranoweisia cirrata on sandstone rocks, 50°4137 N, 14°5119 E, 390 m a.s.l.', 2019-Dec-25, Zuzana Sochorová & Michal Sochor, (holotype: PRM 954007)
Octospora doebbeleri Octospora doebbeleri
1: Octospora doebbeleri, apothecia with shoots of Dicranoweisia cirrata, holotype, image by Z. Sochorová 2: Octospora doebbeleri, spores in water, Czech Republic, type locality, Z. Egertová & M. Sochor (PRM 9540008) 2014-Dec-26
Apothecia: first spherical, later discoid, up to 2.3 mm in diameter and 0.9 mm high, sessile, pinkish, reddish or reddish orange, margin thin, hairless, growing in groups between the host moss
Excipulum: sharply differentiated from medulla, 70200 µm at flanks, composed of textura subangularis
Subhymenium 2540 µm thick, composed of textura angularis-intricata
Medulla 6095 µm thick at flanks, composed of textura intricata
Paraphyses: (vital) 2.9-4 µm wide in lower part, usually straight, less often apically bent, multiseptate, often forked, sometimes with short lateral projections, containing carotenoid granular pigment, apical cell 40-109 µm long, 3.5-11.3 µm wide in the broadest part, very variable in shape, gradually widening, capitate, irregular or not inflated
Asci: 318-460 x 20-28.5 µm (vital), 8-spored, cylindrical, with a hemispherical to slightly truncate apex, pars sporifera 105-128 µm when all 8 ascospores fully developed
Ascospores: (vital) 18.9-24.2 x 10.6-13.6 µm, Q = 1.47-2, (dead) 16.8-23.6 x 9.6-13.1 µm, Q = 1.43-2.42, ellipsoid to narrowly ellipsoid, sometimes with one side more flattened, hyaline, thin-walled, containing one lipid body 8.3-11.1 µm in diam or less often two lipid bodies, ornamentation formed by isolated warts 0.31.2 µm broad and 0.20.8 µm high
Host: Dicranoweisia cirrata
Infectious structures: infects the rhizoids, appressoria 2050 µm long, 1230 µm high and 1840 µm wide, closely attached to the infected rhizoid cells, convex, broadly elliptical in outline seen from above, mostly free or partly covered by hyphae, consisting of one large cell often laterally with one or two additional smaller cells, distal wall to 7 µm thick
Habitat: between shoots of the moss Dicranoweisia cirrata on shaded sandstone cliffs
Distribution: Czech Republic

References:
  • Sochorová Z., Eckstein J., Sedlářová M. & Sochor M. 2021. Octospora doebbeleri, a new bryophilous species on Dicranoweisia cirrata. - Sydowia 73: 233246. DOI
Images:
Octospora doebbeleri Octospora doebbeleri
3: Octospora doebbeleri, appressorium on rhizoid stained with cotton blue, type locality, Z. Egertová & M. Sochor (PRM 9540008) 2014-Dec-26 4: Octospora doebbeleri, spores stained with cotton blue, type locality, Z. Egertová & M. Sochor (PRM 9540008) 2014-Dec-26

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