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Mycological Progress

, Volume 13, Issue 2, pp 285–289 | Cite as

Plasmopara invertifolia sp. nov. causing downy mildew on Helichrysum bracteatum (Asteraceae)

  • Lidiane L. Duarte
  • Young-Joon Choi
  • Dartanhã J. Soares
  • Robert W. BarretoEmail author
Original Article

Abstract

Plasmopara invertifolia sp. nov. causes severe leaf distortion and necrosis on Helichrysum bracteatum, a beautiful and important ornamental plant for trade in Brazil. This oomycete pathogen is distinguished from other species of Plasmopara on Asteraceae by its smaller sporangia and larger sporangiophores, which justifies the proposition of a new taxon in the genus Plasmopara to accommodate it. The phylogenetic analysis of cox2 gene sequence data supports such placement and also shows that P. invertifolia is close to the P. halstedii complex. Plasmopara invertifolia is then described, illustrated and discussed.

Keywords

Molecular phylogeny Oomycetes Ornamental plant Peronosporales Plant pathology Strawflower 

Notes

Acknowledgments

Financial support by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) to who LLD and RWB is gratefully acknowledged. YJC appreciates support by the Alexander-von-Humboldt Foundation.

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Copyright information

© German Mycological Society and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Lidiane L. Duarte
    • 1
  • Young-Joon Choi
    • 2
    • 3
  • Dartanhã J. Soares
    • 4
  • Robert W. Barreto
    • 1
    Email author
  1. 1.Departamento de FitopatologiaUniversidade Federal de ViçosaViçosaBrazil
  2. 2.Biodiversity and Climate Research Centre (BiK-F)Frankfurt (Main)Germany
  3. 3.Department of Biological Sciences, Institute of Ecology, Evolution and DiversityGoethe UniversityFrankfurt (Main)Germany
  4. 4.Embrapa AlgodãoCampina GrandeBrazil

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