Fungi colonising oak seedlings (Quercus robur L.) in forest plantations in north-eastern Poland

Gorzkowska, Alicja; Pszczółkowska, Agnieszka; Okorski, Adam; Nowakowska, Justyna A.; Oszako, Tomasz

doi:10.1515/ffp-2016-0009

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…These functions include continuous protection of water and soil, sanitary, hygienic, recreational and health-improving functions. It is worth noting that the level of productivity of Ukrainian oak forests is comparable to that of similar plantations across Europe [1].…”

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confidence: 93%

Sanitary Felling as a Method of Protecting Oak Plantations From Pests and Diseases in the Branch Vinnytsia Forestry State Specialized Enterprise Forests of Ukraine

Stanislavov,

Makarchuk

2024

Grundlagen Der Modernen Wissenschaftlichen Forschung

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confidence: 93%

Sanitary Felling as a Method of Protecting Oak Plantations From Pests and Diseases in the Branch Vinnytsia Forestry State Specialized Enterprise Forests of Ukraine

Stanislavov,

Makarchuk

2024

Grundlagen Der Modernen Wissenschaftlichen Forschung

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“…These pathogens cause damping-off disease in seedlings, but some are also associated with root diseases of older seedlings and trees in forest stands. Infection rates of seedlings in nurseries can range from 5% to 80%, and potentially result in substantial economic losses (Augspurger & Wilkinson, 2007;Gorzkowska, Pszczółkowska, Okorski, Nowakowska, & Oszako, 2016;Kozanitas, Osmundson, Linzer, & Garbelotto, 2017;Lamichhane et al, 2017;Montecchio, 2005;Scattolin & Montecchio, 2007;Stępniewska-Jarosz, Mańka, & Asiegbu, 2006;Stewart, Abdo, Dumroese, Klopfenstein, & Kim, 2012;Veijalainen, Lilja, & Juntunen, 2005). Weakened seedlings are more susceptible to fungal pathogens and insect pests and this initial susceptibility may remain throughout the life of the tree.…”

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confidence: 99%

Effects of oak root pruning in forest nurseries on potential pathogen infections

et al. 2019

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Despite the general practice of root pruning, little is known about the potential impact of reducing shoot/root systems of oak seedlings in this way on their future susceptibility to pathogens, for example Cylindrocarpon spp., Fusarium spp., Ilyonectria spp., Pythium spp. Phytophthora spp. or Rhizoctonia spp. In this study, root-pruned and non-pruned seedlings of Quercus robur grown under controlled conditions were inoculated with aggressive and less-aggressive pathogens. Results indicated, in contrast to our initial assumption, that pathogens significantly reduced lateral root biomass more in non-pruned seedlings, the extent of the response depending on the pathogens species. In response to pathogen pressure, pruned seedlings tended to attain a higher dry stem mass fraction, but lower dry leaf mass fraction. Pathogens also suppressed leaf mass in total root dry mass fraction (dry leaf mass/total root dry mass ratio, in g × g −1 ) more in pruned than in non-pruned seedlings. These results suggest differences in growth between non-pruned and pruned seedlings in response to pathogen stress. In nurseries, root pruning of oak trees may enhance the reduction in leaf mass in lateral roots mass fraction resulting from pathogen infections, which may decrease seedling quality. It is therefore important to ensure a low level of inoculum of soil-borne pathogens to minimize the risk of seedling infection. K E Y W O R D Sdamping-off, oak seedlings, root pruning

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Characterization of the mycobiome of Pinus sylvestris L. seedlings damaged by forest animals, with an emphasis on pathogenic species

Okorski,

Paczkowska,

Dąbrowska

et al. 2024

Eur J Plant Pathol

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In Poland, red deer, roe deer and elk cause great damage to pine stands, and pine is the predominant forest-forming tree species in Polish forests. Pine seedlings planted adjacent to agricultural fields face heightened risk of damage from nocturnal foraging by game animals, which retreat to forested areas during the day. This damage creates openings for fungal entry, particularly by concerning plant pathogens, such as Fusarium species, which are prevalent in agricultural settings. This study aimed to analyze the mycobiome of pine seedlings damaged by forest animals, focusing on the presence of concerning pathogens in infested pine seedlings collected from ten forest plantations at various distances from rural areas. Samples of pine seedlings bitten by forest animals were taken from 10 forest plantations at different distances from rural areas. Selected diversity indices were determined to compare the fungal populations. Mycological analysis of the gnawed pine shoots using culture and qPCR methods revealed 746 fungal colonies. The most frequently isolated species were: Fusarium avenaceum, Alternaria alternata, Botrytis sp., Cladosporium cladosporioides, representatives of the genus Penicillium, Rhizopus nigricans and Fusarium oxysporum, which were found in samples from all study plots and are thus ubiquitous. Species that are typical pathogens of agricultural crops, such as Fusarium avenaceum, F. culmorum, F. poae, F. sporotrichioides and F. tricinctum, were also isolated from damaged seedling tissue in forest plantations neighbouring agricultural fields. Spearman’s rank correlation analysis showed that the importance of secondary pathogens, represented by species of the genus Fusarium, decreased with increasing distance from agricultural fields, while the importance of primary pathogens increased. Younger pine seedlings exhibited lower species diversity and a higher prevalence of specific secondary pathogen species, coupled with heightened susceptibility to infection compared to older seedlings when subjected to tissue damage by forest animals. These findings underscore not only variations among plantations in proximity to agricultural fields but also suggest potential inter-land spread of fungi, emphasizing the need for integrated management strategies across agricultural and forestry domains.

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Fungi colonising oak seedlings (Quercus robur L.) in forest plantations in north-eastern Poland

Cited by 3 publications

References 22 publications

Sanitary Felling as a Method of Protecting Oak Plantations From Pests and Diseases in the Branch Vinnytsia Forestry State Specialized Enterprise Forests of Ukraine

Sanitary Felling as a Method of Protecting Oak Plantations From Pests and Diseases in the Branch Vinnytsia Forestry State Specialized Enterprise Forests of Ukraine

Effects of oak root pruning in forest nurseries on potential pathogen infections

Characterization of the mycobiome of Pinus sylvestris L. seedlings damaged by forest animals, with an emphasis on pathogenic species

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