Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

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Найдено документов в текущей БД: 3

    Состав и фитопатогенные свойства бактерий, выделенных из пораженной бактериальной водянкой древесины сосны сибирской в Прибайкалье
/ И. Д. Гродницкая, В. А. Сенашова, М. Ю. Трусова, О. Э. Пашкеева, Ю. Н. Баранчиков // Сибирский лесной журнал. - 2023. - № 1. - P70-84, DOI 10.15372/SJFS20230107 . - ISSN 2311-1410
Аннотация: В настоящее время в темнохвойных лесах Прибайкалья распространено заболевание бактериальная водянка (bacterial wetwood), вызывающее ухудшение санитарного состояния древостоев и приводящее к гибели значительных лесных массивов. Несмотря на то что оно известно еще с начала прошлого века, вопрос о его истинном возбудителе до сих пор остается открытым. Полагают, что в развитии патогенеза могут принимать участие ассоциации различных эндофитных микроорганизмов. В связи с этим представляется актуальным исследование состава эндофитного комплекса микроорганизмов древесины больных водянкой лесных пород для установления типов взаимоотношений между эндофитами и проверки их способности инициациировать патологический процесс у хвойных. Сделана попытка выявить основных представителей эндофитного микробиома «мокрой древесины» сосны кедровой сибирской ( Pinus sibirica Du Tour), пораженной бактериальной водянкой, оценить их фитопатогенные свойства и типы взаимоотношений между ними. Исследования проводились в Слюдянском лесничестве Иркутской области. В работе использованы стандартные микробиологические и фитопатологические методы для выделения чистых культур бактерий и изучения их особенностей (в том числе вирулентности), а также молекулярно-генетические методы для идентификации бактерий. Из «мокрой древесины» пораженных бактериальной водянкой деревьев сосны кедровой сибирской впервые выделен комплекс чистых культур эндофитных микроорганизмов. Среди них к условно-патогенным штаммам относятся Rouxiella chamberiensis и Ewingella americana , Stenotrophomonas rhizophila и Bacillus pumilis, проявляющие выраженные вирулентные свойства по отношению к индикаторным растениям и неоднозначно влияющие на рост и развитие сеянцев сосны обыкновенной ( Pinus sylvestris L.). В эндофитном микробиоме пораженной древесины кедра кроме взаимодействия с растением отмечено и взаимное влияние бактерий. Выраженные антагонистические свойства проявляли бактерии р. Bacillus. В основном в эндофитном сообществе преобладали взаимоотношения симбиотического характера, с возможными синтрофными связями
Currently, in the dark coniferous forests of the Baikal region, the spread of the disease bacterial wetwood disease is noted, causing the sanitary condition deterioration in the forest stands, and leading to the forest dieback on large territories. Despite the fact that this disease has been known since the beginning of the last century, the question of its’ real pathogen is still open. It is believed that associations of various endophytic microorganisms may take part in the development of pathogenesis. In this regard, it seems relevant to study the composition of the endophytic complex of microorganisms in wood with bacterial wetwood of forest species in order to establish the types of relationships between endophytes and test their ability to initiate a pathological process in conifers. An attempt was made to identify the main endophytic microbiome representatives of the «wet wood» of Siberian stone pine ( Pinus sibirica Du Tour) affected by bacterial wetwood, to assess their phytopathogenic properties and types of relationships between them. The features of the endophytic microbiome of the Siberian stone pine affected by bacterial wetwood in the Slyudyanskoye forestry of the Irkutsk region were studied. With standard microbiological and phytopathological methods we isolated pure cultures of bacteria and studied their characteristics (including virulence). For bacterias identification molecular genetic methods were used. From the infested wood of Siberian stone pine trees affected by bacterial wetwood, a complex of pure microorganisms cultures, not previously described in other studies, was isolated. Among them, opportunistic strains include Rouxiella chamberiensis, Ewingella americana, Stenotrophomonas rhizophila and Bacillus pumilus , which exhibit pronounced virulent properties in relation to indicator plants and ambiguously affect the growth and development of Scotch pine ( Pinus sylvestris L.) seedlings. Mutual impacts of bacteria on each other were noted in the endophytic microbiome of the affected Siberian stone pine wood. Bacillus bacteria showed pronounced antagonistic properties. Basically, in the endophytic community symbiotic relationships were dominated with possible syntrophic connections

РИНЦ

Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28

Доп.точки доступа:
Сенашова, Вера Александровна; Syenashova Vera Alexandrovna; Трусова, Мария Юрьевна; Trusova M.Yu.; Пашкеева, Оксана Эриковна; Баранчиков, Юрий Николаевич; Baranchikov, Yury Nikolayevich; Grodnitskaya, Irina Dmitriyevna

    Metabolic activity of cryogenic soils in the subarctic zone of Siberia towards “green” bioplastics
/ S. V. Prudnikova, S. Y. Evgrafova, T. G. Volova // Chemosphere. - 2021. - Vol. 263. - Ст. 128180, DOI 10.1016/j.chemosphere.2020.128180 . - ISSN 0045-6535

Кл.слова (ненормированные):
metabolic activity -- P(3HB) bioplastic -- P(3HB) properties -- P(3HB)-degrading strains -- Siberian cryogenic soils -- structure of microbial community -- Aspergillus -- Bacteriology -- Biodegradable polymers -- Biodegradation -- Cryogenics -- Crystallinity -- Metabolism -- Polymer films -- Reinforced plastics -- RNA -- Soils -- Aspergillus fumigatus -- Degree of crystallinity -- Microbial communities -- Nucleotide sequences -- Poly-3-hydroxybutyrate -- Polymer biodegradation -- Soil microbial community -- Surface microstructures -- Bacteria -- bacterial RNA -- fungal RNA -- mineral -- plastic -- poly(3 hydroxybutyric acid) -- polymer -- ribosome RNA -- RNA 16S -- RNA 18S -- RNA 28S -- RNA 5.8S -- abundance -- bacterium -- biodegradation -- biomass -- community structure -- concentration (composition) -- crystallinity -- fungus -- microbial community -- microstructure -- plastic -- polymer -- soil temperature -- subarctic region -- Actinobacteria -- Agrobacterium tumefaciens -- Antarctica -- Arctic -- Article -- Aspergillus fumigatus -- Aspergillus niger -- Bacilli -- Bacillus cereus -- Bacillus pumilus -- bacterial gene -- bacterium isolate -- biodegradability -- biodegradation -- biomass -- Chryseobacterium ioostei -- colony forming unit -- community structure -- concentration (parameter) -- cryogenic soil -- crystallization -- Cupriavidus necator -- ecosystem -- Escherichia coli -- Flavobacteria -- Flavobacterium -- fungal community -- fungal gene -- Fusarium fujikuroi -- Gammaproteobacteria -- green chemistry -- Lactobacterium helveticus -- metabolism -- microbial biomass -- microbial community -- molecular weight -- Mortierella alpina -- Mycobacterium -- Mycobacterium pseudoshotsii -- Nocardioides -- nucleotide sequence -- nucleotide sequence -- Paenibacillus -- Paraburkholderia -- Penicillium -- Penicillium arenicola -- Penicillium glabrum -- Penicillium lanosum -- Penicillium restrictum -- Penicillium spinulosum -- Penicillium thomii -- phylogeny -- Pseudomonas -- Rhizopus oryzae -- Rhodococcus -- RNA sequence -- Russian Federation -- soil -- soil microflora -- soil temperature -- species composition -- Stenotrophomonas -- Streptomyces -- Streptomyces prunicolor -- surface property -- temperature dependence -- thawing -- Variovorax paradoxus -- zpseudomonas lutea -- Siberia -- Aspergillus fumigatus -- Bacillus pumilus -- Bacteria (microorganisms) -- Fungi -- Penicillium thomii -- Pseudomonas sp. -- Rhodococcus sp. -- Stenotrophomonas rhizophila -- Streptomyces prunicolor -- Variovorax paradoxus

Аннотация: The present study investigates, for the first time, the structure of the microbial community of cryogenic soils in the subarctic region of Siberia and the ability of the soil microbial community to metabolize degradable microbial bioplastic – poly-3-hydroxybutyrate [P(3HB)]. When the soil thawed, with the soil temperature between 5-7 and 9–11 °C, the total biomass of microorganisms at a 10-20-cm depth was 226–234 mg g?1 soil and CO2 production was 20–46 mg g?1 day?1. The total abundance of microscopic fungi varied between (7.4 ± 2.3) ? 103 and (18.3 ± 2.2) ? 103 CFU/g soil depending on temperature; the abundance of bacteria was several orders of magnitude greater: (1.6 ± 0.1) ? 106 CFU g?1 soil. The microbial community in the biofilm formed on the surface of P(3HB) films differed from the background soil in concentrations and composition of microorganisms. The activity of microorganisms caused changes in the surface microstructure of polymer films, a decrease in molecular weight, and an increase in the degree of crystallinity of P(3HB), indicating polymer biodegradation due to metabolic activity of microorganisms. The clear-zone technique – plating of isolates on the mineral agar with polymer as sole carbon source – was used to identify P(3HB)-degrading microorganisms inhabiting cryogenic soil in Evenkia. Analysis of nucleotide sequences of rRNA genes was performed to identify the following P(3HB)-degrading species: Bacillus pumilus, Paraburkholderia sp., Pseudomonas sp., Rhodococcus sp., Stenotrophomonas rhizophila, Streptomyces prunicolor, and Variovorax paradoxus bacteria and the Penicillium thomii, P. arenicola, P. lanosum, Aspergillus fumigatus, and A. niger fungi. © 2020 Elsevier Ltd

Scopus

Держатели документа:
Siberian Federal University, 79 Svobodny Pr, Krasnoyarsk, 660041, Russian Federation
V.N. Sukachev Institute of Forest, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/28 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Melnikov Permafrost Institute, SB RAS, 36 Merzlotnaya St., Yakutsk, 677010, Russian Federation

Доп.точки доступа:
Prudnikova, S. V.; Evgrafova, S. Y.; Volova, T. G.

    Metabolic activity of cryogenic soils in the subarctic zone of Siberia towards "green" bioplastics
/ S. V. Prudnikova, S. Y. Evgrafova, T. G. Volova // Chemosphere. - 2021. - Vol. 263. - Ст. 128180, DOI 10.1016/j.chemosphere.2020.128180. - Cited References:101. - This study (polymer synthesis and investigation) was financially supported by Project "Agropreparations of the new generation: a strategy of construction and realization" (Agreement No 074-02-2018-328) in accordance with Resolution No 220 of the Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning", and by the State assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020-0006 (investigation of polymer degradation in soils of Evenkia). . - ISSN 0045-6535. - ISSN 1879-1298
РУБ Environmental Sciences

Аннотация: The present study investigates, for the first time, the structure of the microbial community of cryogenic soils in the subarctic region of Siberia and the ability of the soil microbial community to metabolize degradable microbial bioplastic - poly-3-hydroxybutyrate [P(3HB)]. When the soil thawed, with the soil temperature between 5-7 and 9-11 degrees C, the total biomass of microorganisms at a 10-20-cm depth was 226-234 mg g(-1) soil and CO2 production was 20-46 mg g(-1)W day(-1). The total abundance of microscopic fungi varied between (7.4 +/- 2.3) x 10(3) and (18.3 +/- 2.2) x 10(3) CFU/g soil depending on temperature; the abundance of bacteria was several orders of magnitude greater: (1.6 +/- 0.1) x 10(6) CFU g(-1) soil. The microbial community in the biofilm formed on the surface of P(3HB) films differed from the background soil in concentrations and composition of microorganisms. The activity of microorganisms caused changes in the surface microstructure of polymer films, a decrease in molecular weight, and an increase in the degree of crystallinity of P(3HB), indicating polymer biodegradation due to metabolic activity of microorganisms. The clear-zone technique e plating of isolates on the mineral agar with polymer as sole carbon source e was used to identify P(3HB)-degrading microorganisms inhabiting cryogenic soil in Evenkia. Analysis of nucleotide sequences of rRNA genes was performed to identify the following P(3HB)degrading species: Bacillus pumilus, Paraburkholderia sp., Pseudomonas sp., Rhodococcus sp., Stenotrophomonas rhizophila, Streptomyces prunicolor, and Variovorax paradoxus bacteria and the Penicillium thomii, P. arenicola, P. lanosum, Aspergillus fumigatus, and A. niger fungi. (C) 2020 Elsevier Ltd. All rights reserved.

WOS

Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, VN Sukachev Inst Forest, 50-28 Akademgorodok, Krasnoyarsk 660036, Russia.
Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, Inst Biophys SB RAS, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
SB RAS, Melnikov Permafrost Inst, 36 Merzlotnaya St, Yakutsk 677010, Russia.

Доп.точки доступа:
Prudnikova, Svetlana, V; Evgrafova, Svetlana Yu; Volova, Tatiana G.; Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]; Government of the Russian Federation [220]; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]