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Phoma glomerata as a mycoparasite of powdery mildew

R F Sullivan1, J F White

  • 1Department of Plant Pathology, Cook College, Rutgers University, New Brunswick, New Jersey 08901, USA.

Applied and Environmental Microbiology
|January 5, 2000
PubMed

Insights

Ampelomyces and Phoma fungi are often misidentified. Studies confirm these are Phoma isolates, with Phoma glomerata showing potential for controlling powdery mildew on oak trees as a mycoparasitic agent.

Area of Science:

  • Mycology
  • Plant Pathology
  • Fungal Taxonomy

Background:

  • Ampelomyces and Phoma species are morphologically similar, leading to frequent misidentification in scientific literature.
  • Accurate identification is crucial for understanding fungal roles and interactions.

Purpose of the Study:

  • To clarify the taxonomic status of isolates previously identified as Ampelomyces.
  • To investigate the potential of Phoma glomerata as a biological control agent against powdery mildew.

Main Methods:

  • Morphological and life cycle analyses of fungal isolates.
  • Ribosomal DNA internal transcribed spacer region 1 (ITS1) sequence analysis.
  • Inoculation studies to assess colonization and suppression of powdery mildew on oak.

Main Results:

  • Morphological and molecular data confirmed that isolates attributed to Ampelomyces are indeed Phoma species.
  • Phoma glomerata demonstrated the ability to colonize oak leaves and suppress powdery mildew development.
  • Phoma glomerata showed potential as a mycoparasitic agent.

Conclusions:

  • The genus Ampelomyces is likely synonymous with Phoma based on current evidence.
  • Phoma glomerata is a promising mycoparasitic agent for managing oak powdery mildew, offering a potential sustainable control strategy.

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