Bacteria Associated with Pseudomonas syringae pv. savastanoi in the Pathology of Fraxinus excelsior L.

Goychuk, Anatoliy; Kulbanska, Ivanna; Shvets, М.V.

doi:10.15407/microbiolj82.03.022

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…savastanoi, Erwinia horticola and Xanthomonas sp. Artificial infection of ash with micromycetes did not lead to symptoms like "ash dieback", and infection with bacteria caused pathological processes, similar to tuberculosis F. excelsior [3].…”

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confidence: 95%

“…Currently, bacteriosis and their pathogens are largely studied for plants of agrocenosis. As for the bacteriosis of forest trees, they have not been studied sufficiently, although in recent decades increased attention has been paid to this problem [1,2,3,4]. It is emphasized that on forest trees in the world several dozens of bacteriosis with different degrees of damage caused by bacteria of genera Pseudomonas, Xanthomonas, Enterobacter, Erwinia, Agrobacterium, Brenneria, Xylella, Rhizobium, Corynebacterium, Bacillus, Clostridium etc.…”

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confidence: 99%

“…Also, in samples of diseased tissues revealed sporonic bacteria, mainly the genus Bacillus, which in further studies revealed some antagonistic properties to P. syringae pv. savastanoi and associated and conditionally pathogenic bacteria associated with it in the F. excelsior tuberculosis pathology [3].…”

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confidence: 99%

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Ecological and forestry essence of bacteriosi of forest woody plants in the forests of the Forest-Steppe and Polissya of Ukraine

Kulbanska¹,

Goychuk²,

Shvets³

2021

Ideas and Innovations in Natural Sciences

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Ecological and forestry essence of bacteriosi of forest woody plants in the forests of the Forest-Steppe and Polissya of Ukraine

Kulbanska¹,

Goychuk²,

Shvets³

2021

Ideas and Innovations in Natural Sciences

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“…The dieback of forests is currently an important point of discussion of the world scientific community (Sano et al 1995). The prevailing assumption is that the dieback is closely associated with the ongoing climate change (Dale et al 2001;Lebourgeois et al 2010;Pinto et al 2007;Stoyko 2009;Jactel et al 2012;Yavorovs'kyy 2015;Shvydenko et al 2018;Zhang et al 2018), the development of pathogenic organisms of different systematic and functional affiliations (Gvozdyak et al 2012;Goychuk et al 2020b), the natural changes in the biotopes (Levanic 1997;Schelhaas et al 2003;Pinto et al 2008;Kobal et al 2015), forest management practices (Kalutsky 2008;Kulbanska 2015;Meshkova et al 2018) or complex causes (Gašperšić 1967;Manko and Gladkova 2001;Elling et al 2009).…”

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confidence: 99%

Lelliottia nimipressuralis (Carter 1945) Brady et al. 2013 as the causative agent of bacterial wetwood disease of common silver fir (Abies alba mill.)

Kulbanska

Plikhtyak²,

Shvets

et al. 2022

Folia Forestalia Polonica

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In recent decades, in many regions of the planet, there has been a widespread deterioration in the health condition and dieback of dark coniferous forests, caused by the combined action of various stress factors of biotic and abiotic origin. Forests with the participation of species of the genus Abies Mill. are particularly prone to degradation and dieback. The aim of the research is to study the symptoms of bacterial wetwood disease of Abies alba in the Ivano-Frankivsk region (state enterprise ‘Kutske forestry’) and to determine the anatomical, morphological and cultural properties of the pathogen. Some of the common symptoms of the disease include cracks and ulcers on the trunks with exfoliated rhytidome and exudate secretion, massive development of epicormic shoots, saturated xylem and phloem, wet rot with a characteristic odour of fermentation and pathological nucleus. Based on the syntaxonomic analysis of fir forests, an attempt has been made to identify the objective causes that lead to excessive development of phytopathogens and dieback of Abies alba. Our research established that the primary cause of dieback of Abies alba Mill. forests is a systemic, vascular–parenchymal disease known as bacterial wetwood of fir, which affects all plant tissues at all stages of ontogenesis. We isolated and experimentally confirmed that the causative agent of the disease is a phytopathogenic bacterium Lelliottia nimipressuralis (Carter 1945) Brady et al. 2013, which also causes bacterial wetwood in many species of forest woody plants, and also studied its common morphological, physiological and biochemical properties.

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“…There is virtually no known effective control measure to avoid infection and spread of the disease, which makes it a particularly dangerous phenomenon. Some management recommendations include chemical spraying, sanitary cuttings and soil fumigation in combination with proper fertilisation (Goychuk 2020). To alleviate the buildup of gas pressure and other by-products of bacterial activity, it is recommended to drain the liquid using pruning or bark perforation.…”

Section: Introductionmentioning

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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Bacteria Associated with Pseudomonas syringae pv. savastanoi in the Pathology of Fraxinus excelsior L.

Cited by 9 publications

References 5 publications

Ecological and forestry essence of bacteriosi of forest woody plants in the forests of the Forest-Steppe and Polissya of Ukraine

Ecological and forestry essence of bacteriosi of forest woody plants in the forests of the Forest-Steppe and Polissya of Ukraine

Lelliottia nimipressuralis (Carter 1945) Brady et al. 2013 as the causative agent of bacterial wetwood disease of common silver fir (Abies alba mill.)

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

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