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The mycological study of conifers in Tbilisi and its surroundings

Author

Listed:
  • Irina Danelia

    (Department of Microbiology, Plant Genetics and Physiology, Faculty of Agrarian Technologies and Biosystems Engineering, Georgian Technical University, Tbilisi, Georgia)

  • Nino Zaqariashvili

    (Department of Microbiology, Plant Genetics and Physiology, Faculty of Agrarian Technologies and Biosystems Engineering, Georgian Technical University, Tbilisi, Georgia)

  • Lia Amiranashvili

    (Department of Microbiology, Plant Genetics and Physiology, Faculty of Agrarian Technologies and Biosystems Engineering, Georgian Technical University, Tbilisi, Georgia)

  • Gulnara Badridze

    (Department of Microbiology, Plant Genetics and Physiology, Faculty of Agrarian Technologies and Biosystems Engineering, Georgian Technical University, Tbilisi, Georgia
    Department of Plant Physiology, Institute of Botany, Ilia State University, Tbilisi, Georgia)

  • Salome Kvitsiani

    (Department of Microbiology, Plant Genetics and Physiology, Faculty of Agrarian Technologies and Biosystems Engineering, Georgian Technical University, Tbilisi, Georgia)

Abstract

Extensive microbiological research was carried out in Tbilisi (capital of Georgia) and its surroundings to determine the causes of massive disease and dieback of urban coniferous plantations. The biological material was picked up in June-July 2020 from trees with various degrees of the disease in 42 different localities. 247 conifers (15 species) were examined microbiologically. 1 169 samples of microscopic fungi were isolated. Based on cultural-morphological and molecular-genetic (PCR) studies, 34 strains were identified to the species level, 17 to the genus level, and 1 strain to the family level. Ascomycota were represented by 15 families and 33 species, Basidiomycota by 1 family and 2 species and Zygomycota by 2 families and 2 species. Among the isolated strains, 9 species were clearly dominant and found in all studied coniferous species: Alternaria alternata (Fr.) Keissl, Sphaeropsis sapinea (Fr.) Dyko & B. Button, Epicoccum nigrum Link., Sordaria lappae Potebnia, Curvularia spp., Dothiorella spp, Nothophoma quercina (Sydow & P. Sydow) Q. Chen & L. Cai, Phoma odoratissimi Q. Chen, Didymella aliena (Fries) Q. Chen & L. Cai. It may be supposed that massive activation of pathogenic fungi is the result of weakening of plant immunity on the background of increasing abiotic stresses in Tbilisi over the years; which led to an imbalance between latent pathogens and host plants and eventually to the depressing consequences of trees dieback.

Suggested Citation

  • Irina Danelia & Nino Zaqariashvili & Lia Amiranashvili & Gulnara Badridze & Salome Kvitsiani, 2021. "The mycological study of conifers in Tbilisi and its surroundings," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 67(10), pages 464-476.
    • Handle: RePEc:caa:jnljfs:v:67:y:2021:i:10:id:79-2021-jfs
    DOI: 10.17221/79/2021-JFS
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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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