Abstract
Summary Morphological and growth characteristics, esterase isozyme banding patterns and total DNA profiles were obtained for isolates of Cylindrocladium citri Fawcett & Klotz, C. crotalariae (Loos) Bell & Sobers, C. ilicicola (Hawley) Boedijn & Reitsma, C. penicilloides (Tub.) Tubaki, C. spathulatum El-Gholl, Kimbrough, Barnard, Alfieri & Schoulties as well as seven previously unidentified isolates. The study of zymograms and total DNA banding patterns enhanced our ability to determine relationships among and within species. Each procedure allowed us to differentiate among all the species except between C. penicilloides and C. citri, which appeared distinct only on the basis of their esterase zymograms. C. penicilloides may therefore be regarded as an intraspecific variant of C. citri. Furthermore, a new species, C. variabile, and its teleomorph, Calonectria variabilis, are described. The new species has distinct vesicle morphology, esterase and total DNA banding patterns.
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