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Citation for Study 1644

About Citation title: "Host range of Cercospora apii and C. beticola, and description of C. apiicola, a novel species from celery".
About This study was previously identified under the legacy study ID S1594 (Status: Published).


Groenewald M., Groenewald J.Z., Braun U., & Crous P.W. 2005. Host range of Cercospora apii and C. beticola, and description of C. apiicola, a novel species from celery. Mycologia, 98: 275-285.


  • Groenewald M. Phone +31 (0)30 212 2614
  • Groenewald J.Z. Phone +31302122600
  • Braun U.
  • Crous P.W.


The genus Cercospora is one of the largest and most heterogeneous genera of hyphomycetes. Cercospora species are distributed worldwide and cause Cercospora leaf spot on most of the major plant families. Numerous species described from diverse hosts and locations are morphologically indistinguishable from C. apii, and are subsequently referred to as C. apii sensu lato. The importance and ecological role that different hosts play in taxon delimitation and recognition within this complex is still unclear. It has been shown that Cercospora leaf spot on celery and sugar beet are caused by C. apii and C. beticola respectively, which are both part of the C. apii complex. During this study we characterized a new Cercospora species, C. apiicola that was isolated from celery in Venezuela, Korea and Greece. The phylogenetic relationship between C. apiicola and other closely related Cercospora species was studied using five different gene areas. These analyses revealed that the C. apiicola isolates cluster together in a well-defined clade. Although C. apii and C. beticola sensu stricto also form well-defined clades, both species are shown to have wider host ranges. Several species of Cercospora previously thought to be part of C. apii based on morphology, are shown to represent distinct species.

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