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New records of microcyclic conidiogenesis in some powdery mildew fungi

Mycoscience volume 52, pages 213–216 (2011)Cite this article

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.

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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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Authors and Affiliations

  1. Plant Protection Institute of the Hungarian Academy of Sciences, P.O. Box 102, 1525, Budapest, Hungary

    Alexandra Pintye & Levente Kiss

  2. Istituto di Entomologia e Patologia Vegetale, Università Cattolica del Sacro Cuore, Via E. Parmense 84, 29100, Piacenza, Italy

    Sara Elisabetta Legler

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  1. Alexandra Pintye
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  2. Sara Elisabetta Legler
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  3. Levente Kiss
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Correspondence to Levente Kiss.

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Pintye, A., Legler, S.E. & Kiss, L. New records of microcyclic conidiogenesis in some powdery mildew fungi. Mycoscience 52, 213–216 (2011). https://doi.org/10.1007/s10267-010-0093-0

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Keywords

  • Conidial germination
  • Erysiphales
  • Erysiphaceae
  • Microcyclic conidiation