Pseudocercospora flavomarginata sp. nov., from Eucalyptus leaves in Thailand

G.C. Hunter, P.W. Crous, B.D. Wingfield, K. Pongpanich, M.J. Wingfield

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)

Abstract

Mycosphaerella represents one of the largest ascomycete genera accommodating more than 3000 names. Approximately 60 Mycosphaerella species have been linked to leaf diseases on Eucalyptus species, collectively known as Mycosphaerella Leaf Disease (MLD). Many hyphomycete and coelomycete anamorph genera are linked to Mycosphaerella and several species of the hyphomycete genus Pseudocercospora are associated with MLD symptoms on various Eucalyptus species. Eucalyptus trees in Vietnam and Thailand, particularly those of E. camaldulensis and hybrids of this species, commonly have a leaf spot disease caused by a species of Pseudocercospora. Lesions associated with this disease are very characteristic, with chlorotic margins and masses of brown conidiophores occurring predominantly on the abaxial lesion surface. The aim of this study was to characterise the Pseudocercospora species associated with this disease. This was achieved through studying the morphology of the fungus and via DNA sequence analysis from four nuclear gene regions. Results showed that the fungus represents an undescribed species of Pseudocercospora, that is formally described here as Pseudocercospora flavomarginata.
Original languageEnglish
Pages (from-to)71-90
JournalFungal Diversity
Volume22
Publication statusPublished - 2006

Keywords

  • phylogenetic reassessment
  • mycosphaerella spp.
  • cercosporoid fungi
  • leaf diseases
  • ribosomal dna
  • anamorphs
  • indonesia
  • stenella
  • africa

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