Persoonia (2008) 21, 9-16

F.M. Dugan, U. Braun, J.Z. Groenewald and P.W. Crous (2008)
Morphological plasticity in Cladosporium sphaerospermum
Persoonia 21, 9-16
Abstract: A morphologically distinct isolate of Cladosporium sphaerospermum from a North American patent collection, referenced as Cladosporium lignicola in the patent, was examined. Generic affinity was confirmed by scanning electron microscopic examination of conidiogenous loci and conidial hila. Species identity as C. sphaerospermum was indicated by DNA sequence data derived from actin and translation elongation factor 1-alpha genes, and the internal transcribed spacer region. The isolate broadens the morphological limits of C. sphaerospermum by production of obclavate, occasionally transversely septate conidia with subrostrate conidiogenous apices ('alternarioid' conidia), and by production of conidia larger than those in prior standard descriptions. Type material of C. lignicola was re-examined and compared with the North American fungus, from which it is morphologically distinct. The decision to reduce C. lignicola to synonymy under C. herbarum was confirmed.
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Database assignments for author(s): Frank M. Dugan, Pedro W. Crous, Johannes Z. Groenewald, Uwe Braun

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cladosporium sphaerospermum		Germany
	Cladosporium sphaerospermum		South Africa