Mass Reproduction of Polygraphus proximus Blandford in Fir Forests of Siberia Infected with Root and Stem Pathogens: Monitoring, Patterns, and Biological Control

Pavlov, Igor N.; Litovka, Yulia A.; Golubev, D. V.; Astapenko, S. A.; Chromogin, P. V.; Usoltseva, Y. V.; Makolova, P V; Petrenko, S.

doi:10.1134/s1995425520010060

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…I.N. Pavlov et al (2020) found that the impact of invasive pest species is recognised as the most significant on the planet's dark coniferous forests -Polygraphus proximus Blandford and Ips typographus Linnaeus, which cause mass tree death and alter the composition, structure, and function of forests. J.L.…”

Section: Introductionmentioning

confidence: 99%

Ulcerative tumour-like disease of white fir in the Pokuttia Carpathians

Kulbanska,

Goychuk,

Soroka

et al. 2024

Ukr. j. for. wood sci.

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The current state of dark coniferous forests on Earth is a bio-indicator of global environmental change, in particular, the process of gradual degradation of tree species of the genera Pine, Spruce and Fir, due to the negative impact of anthropogenic activities, abiotic and biotic factors. The purpose of the study is to establish the symptoms, prevalence and harmfulness of the causative agent of ulcerative tumour-like disease on the shoots and trunks of white fir. The research was conducted on the territory of the forest fund of the Pokuttia Carpathians, in particular, within the branch Kutske forestry of the State Specialised Economic Enterprise “Forests of Ukraine” in the Kosivske forest enterprise. The study uses classical phytopathological and mycological methods, which are used to investigate the aetiology of the disease, analyse typical symptoms (starting from the early stages), and perform microscopy of the affected parts of fir. The symptoms, aetiology, and pathogenesis of white fir ulcer-like disease, which tends to spread, were investigated. A new name for the disease is substantiated, in particular, it is proposed to use the name “ulcerative tumour-like disease” of fir instead of the current name “cancer”. It is shown that a typical sign of infection is the development of tumours, which eventually transform into ulcers. It was found that the tumour-like type of lesion prevails on the undergrowth of fir, and on plants of the upper tiers – ulcerative. It is noted that a typical sign of ulcerative tumour-like disease of white fir is also the presence of pathologies such as “witches’ broom”. It is proposed to remove affected trees with typical signs of infection with ulcerative tumour-like disease to reduce the infectious background, especially during lighting and cleaning, since affected trees are not released from infection. Therefore, assessing the risk of infection of white fir trees with ulcerative tumour-like disease at the level of specific stands and ensuring an appropriate response to potential infection risks is an important part of sustainable forest management

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Section: Introductionmentioning

confidence: 99%

Ulcerative tumour-like disease of white fir in the Pokuttia Carpathians

Kulbanska,

Goychuk,

Soroka

et al. 2024

Ukr. j. for. wood sci.

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“…The main structural and functional element of forest communities are tree species. In this system, the exchange of matter and energy takes place [31][32][33]. To ensure the effective functioning of forest ecosystems, monitoring is carried out, including a system of tracking, analysis and forecasting of the dynamics of the state of forests under the influence of various influences in order to improve the performance of their assigned functions [34,35].…”

Section: Introductionmentioning

confidence: 99%

The species composition of tree and shrub plantations and their forest pathological state

Zhichkina

Zhichkin²,

Lazhauninkas³

et al. 2023

E3S Web Conf.

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The stability of forest ecosystems and their resilience in the event of stressful situations is determined by the species composition of tree and shrub plantations. Forest ecosystems represent a biological system consisting of a community of interconnected living organisms dominated by woody vegetation, with the direct influence of abiotic factors complex. The research purpose is to determine the composition of tree and shrub species and their forest pathological state. 13 species of trees (3 species of coniferous species, 10 species of deciduous species) and 6 species of shrubs grow on the territory of the Volzhsky forestry. In the composition of the forest stand, the tree species proportion varies from 0.1% to 29.4%, the shrubs proportion varies from 0.1% to 8.3%. Among deciduous species, lanceolate ash dominates (29.4%), among conifers, Siberian larch (12.7%), and among shrubs, common lilac (8.3%). The conducted studies allowed to identify 28 species of harmful organisms (18 species - pests and 10 species - pathogens of fungal, viral and non-infectious diseases). Among the pests, the ecological group of pests of leaves and needles was the most represented - 37.9% in tree species and 11.1% in shrubs, among diseases - diseases of trunks and branches - 19.7%. The tree species most affected by diseases and damaged by pests was the small-leaved elm, so in 94% of the trees the leaves were damaged by pests and in 59% of the trees the trunks and branches were affected by diseases.

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“…Nowadays, an invasive bark beetle Polygraphus proximus Blandford is the main biotic factor inducing large-scale A. sibirica stands dieback across its entire range [12][13][14][15]. A number of researchers proved that wood-inhabiting pathogens causing canker diseases, necrosis and rot have a significant negative impact on the state of forests [6,7,9,16,17]. Nevertheless, the impact that infectious diseases have on forest stands and their role in dark coniferous (particularly, firdominated) forests dieback is often underestimated.…”

Section: Introductionmentioning

confidence: 99%

Intracenotic patterns in damage of Abies sibirica Ledeb.-dominated stands by infectious diseases in the south of Central Siberia

Melnichenko

Tatarintsev

2023

E3S Web of Conf.

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Abies sibirica Ledeb.-dominated stands degradation is of special concern. Nevertheless, insufficient attention is paid to the role of pathogens in this process. The aim of the present study is to assess the coenotic role of infectious diseases in fir-dominated stands in the south of Central Siberia. The research was based on a forest pathological examination conducted in A. sibirica-dominated forest stands in the Krasnoyarsk Krai. The cenotic role of the identified diseases is unequal. Stem decay and fir broom rust are typical diseases that weaken trees and induce rotten windsnap accumulation. Fir broom rust randomly affects trees of different age and size. The prevalence of fir broom rust in the studied fir stands reached 10% or more. The most hazard diseases in the studied stands are bacterial soft rot and root rot. Bacterial soft rot damages up to 20% of trees and causes their gradual dieback. The main cause of tree mortality in fir-dominated stands is root rot. The root rot-causing fungi lead to rapid dieback of trees of different cenotic status. In synergy with other factors, root rot acts as a significant endogenous factor in the current reorganization of coniferous forest ecosystems in the south of Central Siberia.

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Mass Reproduction of Polygraphus proximus Blandford in Fir Forests of Siberia Infected with Root and Stem Pathogens: Monitoring, Patterns, and Biological Control

Cited by 13 publications

References 21 publications

Ulcerative tumour-like disease of white fir in the Pokuttia Carpathians

Ulcerative tumour-like disease of white fir in the Pokuttia Carpathians

The species composition of tree and shrub plantations and their forest pathological state

Intracenotic patterns in damage of Abies sibirica Ledeb.-dominated stands by infectious diseases in the south of Central Siberia

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