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First confirmed report on Fusarium sporotrichioides on Pinus ponderosa var. jeffreyi in Slovakia

Author

Listed:
  • Helena IVANOVÁ

    (Institute of Forest Ecology of the Slovak Academy of Sciences, Branch for Woody Plants Biology, Nitra, Slovak Republic)

  • Ľudmila HREHOVÁ

    (Institute of Biology and Ecology, Pavol Jozef Šafárik University, Košice, Slovak Republic)

  • Peter PRISTAŠ

    (Institute of Biology and Ecology, Pavol Jozef Šafárik University, Košice, Slovak Republic)

Abstract

During 2014-2015, samples from ten 20-25 years old pine (Pinus ponderosa var. jeffreyi) trees showing wilt symptoms were collected from the Arborétum Mlyňany park. A disease was observed on 20% of the trees. The first symptoms are wilting, stunting, chlorosis, and discolouration of needles, which turned yellow on affected twigs, then red and finally they fell off. Isolations of the pathogen were done from the discoloured tissues of needles (twenty samples from each tree) on Potato Dextrose Agar. Colonies of the fungus (3-4 Petri dishes from each tree) were initially aerial, white or slightly violet, but with age they became red and red pigments were produced in agar. The observed micromorphological characteristics of the fungus, such as presence of simple and proliferating conidiophores with polyphialides, microconidia, macroconidial shape, and chlamydospore presence matched the description of Fusarium sporotrichioides. The identity of the fungus was confirmed by phylogenetic analysis of internal transcribed spacer (ITS) sequences. Sequence comparisons placed the fungus to the species F. sporotrichioides with similarity of 99.6% at the ITS sequence level.

Suggested Citation

  • Helena IVANOVÁ & Ľudmila HREHOVÁ & Peter PRISTAŠ, 2016. "First confirmed report on Fusarium sporotrichioides on Pinus ponderosa var. jeffreyi in Slovakia," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 52(4), pages 250-253.
    • Handle: RePEc:caa:jnlpps:v:52:y:2016:i:4:id:66-2016-pps
    DOI: 10.17221/66/2016-PPS
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    References listed on IDEAS

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    1. Helena Ivanová & Peter Pristaš & Emília Ondrušková, 2016. "Comparison of two Coniochaeta species (C. ligniaria and C. malacotricha) with a new pathogen of black pine needles - Sordaria macrospora," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 52(1), pages 18-25.
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