Botryosphaeriales » Botryosphaeriaceae » Lasiodiplodia

Lasiodiplodia jatrophicola

Lasiodiplodia jatrophicola A.R. Machado & O.L. Pereira, in Machado, Pinho & Pereira, Fungal Diversity 67(1): 239 (2014)

MycoBanK: MB804869

Etymology: in reference to the host genus, Jatropha.

 

Mycelium immersed or superficial, branched, septate, dark brown. Conidiomata pycnidial, stromatic, superficial, sepa- rate, globose, dark brown, unilocular, often covered by aerial mycelium, formed superficially on twigs of pinus or corn straw in culture. Wall dark brown, thick-walled textura angularis, paler and thinner towards the conidiogenous region. Conidiophores absent. Conidiogenous cells holoblastic, deter- minate, discrete, cylindrical, hyaline, smooth and thin-walled, formed from cells lining the inner pycnidial walls, 7 − 15 × 2 − 5 μm. Paraphyses hyaline, cylindrical, septate, occasionally branched, ends rounded, up to 70 μm long, 3 μm wide. Conidia acrogenous, aseptate, ellipsoid to ovoid, hyaline when young, later becoming medianly one-septate, dark brown, thick-walled, rounded apices, frequently truncate base, 22−26×14−17 μm and longitudinal striations.

 

Habitat: On Jatropha curcas

Known distribution: Espírito Santo state, Brazil

Material examined: BRAZIL, Colatina, Espírito Santo, Collar and root rot of J.curcas, 2011, A. R. Machado & O. L. Pereira (VIC39110 holotype; culture ex-type CMM3610).

  

Figure.1: a–f Lasiodiplodia jatrophicola strain CMM3610. a, conidiomata on Pinus twigs in culture. b, section of conidioma. c, conidia developing on conidiogenous cells. d, branched paraphyses. e, immature conidia. f, mature conidia. Scale bars:a =1,000 μm; b =50 μm;c– d=5 μm; e– f=15 μm.

 

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