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Mycoscience

, Volume 52, Issue 3, pp 213–216 | Cite as

New records of microcyclic conidiogenesis in some powdery mildew fungi

  • Alexandra Pintye
  • Sara Elisabetta Legler
  • Levente Kiss
Note

Abstract

Microcyclic conidiogenesis (MC) was recently described in several species of powdery mildew fungi. This process, defined as the production of conidia on a fungal spore without any, or only a minimal, involvement of hyphal growth, was observed on powdery mildew conidia that have already germinated on host plant surfaces and have been attached to the epidermal cells. Most probably, MC contributes to a quick propagation of young powdery mildew colonies because new conidia are sometimes produced in a shorter time on microcyclic conidiophores than on the hyphae of the young mycelium. This article reports MC in Erysiphe necator ex grapevine, Podosphaera leucotricha ex apple, Golovinomyces orontii ex tobacco, and Neoerysiphe galeopsidis ex Lamium purpureum based on light and low-temperature scanning electron microscopic studies.

Keywords

Conidial germination Erysiphales Erysiphaceae Microcyclic conidiation 

Notes

Acknowledgments

This work was supported by a grant (OTKA K73565) of the Hungarian Scientific Research Fund and also by a Hungarian-Italian intergovernmental collaborative project (IT-33/07). The LT-SEM work was performed with Dr. Evi Bieler in the ZMB Laboratory, University of Basel, Switzerland, as a part of a collaboration with Dr. Hanns-Heinz Kassemeyer (Staatliches Weinbauinstitut Freiburg, Germany).

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Copyright information

© The Mycological Society of Japan and Springer 2010

Authors and Affiliations

  • Alexandra Pintye
    • 1
  • Sara Elisabetta Legler
    • 2
  • Levente Kiss
    • 1
  1. 1.Plant Protection Institute of the Hungarian Academy of SciencesBudapestHungary
  2. 2.Istituto di Entomologia e Patologia VegetaleUniversità Cattolica del Sacro CuorePiacenzaItaly

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