Ризик Зникнення Берези Повислої В Житомирському Поліссі України

Goychuk, Anatoliy; Drozda, Valentin; Shvets, М.V.

doi:10.15421/411816

Cited by 5 publications

(5 citation statements)

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“…The characteristic of the territory's moisture supply level was calculated using Selyaninov's hydrothermal coefficient of hydration (HTC), where the following zones were identified: excess moisture, or drainage zone (HTC > 1.3), sufficient hydration (1.0-1.3), arid (0.7-1.0), dry (0.5-0.7) and irrigation (HTC < 0.5) (Selyaninov 1928;Goychuk et al 2018).…”

Section: Methodsmentioning

confidence: 99%

Bacterial wetwood of silver birch (Betula pendula roth): symptomology, etiology and pathogenesis

Goychuk

Drozda

Shvets

et al. 2020

Folia Forestalia Polonica

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The article is focused on microbiological and silvicultural properties of bacterial wetwood of silver birch (Betula pendula), also known as European white birch. During the active phase of the disease, bacterial wetwood (i.e. bacterial dropsy, vascular parenchymatous bacteriosis or flux slime) is characterised by crust and periderm bloating, necrotic wet stains and abundance of exudate. The disease is more likely to occur in older (r = 0.56, p < 0.01) and less-dense (r = −0.29, p < 0.01) stands.The statistical model showed that the chance of bacterial wetwood increases with birch age by 0.36% per year. The stands with birch proportion of over 70% demonstrated 15.3% lower infection rate compared to the stands with lower birch presence. The stands with lower stocking demonstrated a higher proportion of infected tree distribution by 7.5% compared to the stands with higher birch representation. The most vulnerable were larger, older B. pendula trees with longitudinally fissured bark that grow on poorer soils and experience frequent water stress.Birch associations with Pteridium aquilinum and Vaccinium myrtillus were more susceptible to infection (31.6% and 44.3%, respectively), whereas associations with Brachypodium sylvaticum, Sphagnum palustre and Calluna vulgaris were at lower risk. Strong ecological and trophic association of bacterial wetwood was present between silver birch and Tremex spp., particularly Tremex fuscicornis. Mycobiota was represented by Rhizopus microsporus, Mucor mucedo, Penicillium aurantiogriseum, Penicillium purpurogenum and Acremonium strictum.Enterobacter, Xanthomonas, Pantoea and Bacillus spp. associated with bacterial wetwood of silver birch were isolated. Enterobacter nimipressuralis was found to be the primary causative agent through means of artificial infection, while other bacteria were found to be either weak pathogens or concomitant. E. nimipressuralis formed the largest number of colony-forming units (CFU) for bark and cambium (164 and 127 CFU, respectively) and was also found in a small amount as a vital obligate in the automicrobiota in healthy birch trees.

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Section: Methodsmentioning

confidence: 99%

Bacterial wetwood of silver birch (Betula pendula roth): symptomology, etiology and pathogenesis

Goychuk

Drozda

Shvets

et al. 2020

Folia Forestalia Polonica

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“…Нашими попередніми дослідженнями у великих лісових масивах встановлено, що від дії бактеріозів всихають зазвичай пристигаючі, стиглі і перестійні берези у вологих умовах за різкого зниження ґрунтових вод, а осередки всихання збільшуються з віком дерев, корелюють з повнотою насаджень, ступенем зволоження і багатством ґрунтів, за цього склад насадження практично не впливає на інтенсивність усихання беріз (Hoichuk et al, 2018). Розвиток бактеріальної водянки на різних за формою кори березах суттєво відрізняється.…”

Section: рис 4 базидіоми березової губки (зліва) трутовика справжнunclassified

PHYTOSANITARY STATE OF PLANTS THE GENUS BETULA IN THE BOTANICAL GARDEN ZhNAEU

Shvets¹,

Markov²,

Galev³

et al. 2020

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Objectiveto assess and analyze the phytosanitary condition of plants of the genus Betula on the territory of the botanical garden of the Zhytomyr National Agroecological University. In the course of the research, the following methods were used: route-visual, forestry-inventory, mycological, phytopathological, and comparatively calculated. Diagnosing the viability of forest plants, we used visual and instrumental approaches. The condition of plant specimens was evaluated in three categories: good, satisfactory, and unsatisfactory. Materials were processed using the Microsoft Office Word and Microsoft Office Excel computer programs. The phytosanitary condition of plants from the genus Betula was assessed and analyzed on the territory of the botanical garden of the Zhytomyr National Agroecological University. In the territory of the botanical garden, specimens of Betula raddeana Traut., B. lenta L., B. papyrifera Marsh., B. schmidtii Reg., B. dahurica Pall. are in excellent physiological condition now. Somewhat weakened infectious pathologies are B. pendula Roth. and B. pubescens Ehrh. Diagnosed their pathological processes with the identification of the species composition of pathogens of infectious diseases and pathologies of non-infectious nature. In general, the phytosanitary condition of the studied specimens is satisfactory; however, 27.3 % of plants of Betula are now weakened. Infectious diseases of birch trees of various etiologies have been identified. Brown spots are the most common among diseases of fungal etiology-the pathogen Marssonina betulae. Diagnosed the presence of wood destroyers Fomitopsis betulina and Fomes fomentarius. Found diffuse foci of half-parasite mistletoe white (Viscum album). Among the bacterioses, the negative effect of the pathogens of the bacterial burn of (Erwinia amylоvora) and the bacterial dropsy of silver birch (Lelliottia nimipressuralis) on the morphological and physiological state of plants has been established. In shape of the bark, silver birch with a rhomboid-fissured form of the bark turned out to be resistant to bacterial dropsy, the least stable with a smooth shape. On the examined tree trunks, the pattern of altitude of ulcers from dropsy (as integral components of the symptoms of bacteriosis) was revealed, where they were noted up to a height of 15.5 m. A key step in the development plant of Betula health measures is environmental and pathological monitoring, annual sanitary trimming of affected shoots and dry branches, and the use of biological products based on aerobic spore-forming bacteria Bacillus sp.

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“…Наразі бактеріози лісових деревних рослин та їхні збудники досліджені недостатньо, хоча в останні десятиріччя спостерігається підвищена увага до цієї проблеми (Cherpakov, 2012;Sheluho & Sidorov, 2008;Kulbanska, 2015;Gvozdyak et al, 2011;(Hoichuk, Drozda, Shvets, 2018).). Акцентується увага, що на лісових деревних рослинах у світі описано кілька десятків бактеріозів із різною симптоматикою та ступенем шкідливості, які спричинюють бактерії з родів Pseudomonas, Xanthomonas, Enterobacter, Erwinia, Brenneria, Xylella, Rhizobium, Corynebacterium, Bacillus, Clostridium тощо (Buchanan & Gibbons, 1974;Cherpakov, 2012).…”

Section: вступunclassified

Etiology and Symptomatology of Bacterioses Wood Plants in the Stands of the Green Zone of the City of Kiev

Kulbanska¹,

Shvets²,

Markov³

2019

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The results of studies of bacterioses Fraxinus excelsior, Betula pendula, Aesculus hippocastanum, Quercus robur, Pinus sylvestris, Populus alba, Populus tremula, Morus alba, Ailanthus altíssimaare presented. The focus is on that, phytopathogenic bacteria are extremely harmful and directly involved in the epiphytotic dieback of woody plants. To study the symptoms and etiology of bacterial diseases of woody plants in the green zone of the city of Kiev, special methods of forest pathological examinations and phytopathological studies were used, as well as methods generally accepted in experimental microbiology, in particular the selection of affected organs and tissues, isolation of micro-and microorganisms into a pure culture; checking the pathogenic properties of isolated isolates and their identification and the like. It is shown that pathogens of bacterioses of the studied plants are phytopathogenic bacteria-polybiotroph from genus Pseudomonas, Xanthomonas, Enterobacter, Erwinia, Brenneria, Xylella, Rhizobium, Corynebacterium, Bacillus, Clostridiumetc. Symptoms and features of the pathogenesis of ash tuberculosis are given (causative agent-Pseudomonas syringae pv. savastanoi); bacterial dropsy of white birch (causative agent-Lelliottia nimipressuralis), common horse chestnut (causative agent-Pseudomonas syringae var. aesculi), common oak (causative agent-Lelliottia nimipressuralis), white poplar and aspen (bacterial association, in particular Erwinia cancerogena, Corynebacterium humiferum, Bacillus populi), white mulberry (causative agent-Pseudomonas syringae pv. mori), ailanthus, (pathogen not identified); and tumorassociated bacteriosis in pine (causative agent is not identified). The need to deepen studies of pathogenic components of automicrobiota, in particular in the context of understanding both the general biological problems of pathology and the goal of developing forest protection measures, is noted.

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Ризик Зникнення Берези Повислої В Житомирському Поліссі України

Cited by 5 publications

References 0 publications

Bacterial wetwood of silver birch (Betula pendula roth): symptomology, etiology and pathogenesis

Bacterial wetwood of silver birch (Betula pendula roth): symptomology, etiology and pathogenesis

PHYTOSANITARY STATE OF PLANTS THE GENUS BETULA IN THE BOTANICAL GARDEN ZhNAEU

Etiology and Symptomatology of Bacterioses Wood Plants in the Stands of the Green Zone of the City of Kiev

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