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

[Text] / G. G. Polyakova [et al.] // Russ. J. Plant Physiol. - 2008. - Vol. 55, Is. 4. - P496-502, DOI 10.1134/S1021443708040109. - Cited References: 25 . - 7. - ISSN 1021-4437РУБ Plant Sciences

Аннотация: The elicitor activity of compounds extracted from the mycelia of six species of phytopathogenic fungi was assessed from the sizes of necrotic lesions on the external surface of the living trunk phloem of five coniferous species inhabiting Siberia: Siberian larch (Larix sibirica L.), Scotch pine (Pinus sylvestris L.), Siberian spruce (Picea obovata Ledeb.), Siberian fir (Abies sibirica L.), and cedar pine (Pinus sibirica (Rupr.) Mayr.). The compounds for inoculation were extracted from the mycelium of ascomycetes imperfect, and basidium fungi; the living mycelia of these fungi were also used. The fungal extract or mycelium was placed into the hollows 7 mm in diameter in the trunk bark. Infection triggered the formation of hypersensitivity necrotic lesions in the inner bark exceeding in size those appeared after control wounding of four tree species (larch, pine, spruce, and cedar); fir was an exclusion. In experiments with tree trunks and conifer calluses, a dependence of immune response parameters (the sizes of necrotic lesions and the content of lignin and bound proanthocyanidins) on the quantity of the fungal preparation was elucidated. The largest necrotic lesions appeared after injection of 500 mu g of the fungal preparation into the hollow in the trunk, and its higher quantities did not increase the indices measured. The size of the necrotic lesion on the trunk bark is supposed to be used as a promising index characterizing the level of tree immunity and tolerance under various ecological conditions.

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Держатели документа:
[Polyakova, G. G.
Pashenova, N. V.
Polyakov, V. I.
Zrazhevskaya, G. K.] Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Polyakova, G.G.; Pashenova, N.V.; Polyakov, V.I.; Zrazhevskaya, G.K.

[Text] / Y. N. Baranchikov // Russ. J. Ecol. - 2006. - Vol. 37, Is. 4. - P288-290, DOI 10.1134/S1067413606040126. - Cited References: 17 . - 3. - ISSN 1067-4136РУБ Ecology


Полный текст,
WOS,
Scopus

Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Baranchikov, Y.N.

[Text] / G. G. POLYAKOVA [et al.] // Russ. J. Plant Physiol. - 1995. - Vol. 42, Is. 4. - P552-557. - Cited References: 21 . - 6. - ISSN 1021-4437РУБ Plant Sciences

Аннотация: The rate of accumulation and location of proanthocyanidins and lignin was studied in fir (Abies sibirica Ledeb.) trunk phloem inoculated with two species of pathogenic micromycetes Verticillium sp. and Thysanophora sp., the usual associates of the sawyer Monochamus urussovi Fisch. Greater accumulation of the phenolic substances and more rapid localization of pathogen as a result of a hypersensitivity reaction were detected in firs infected with Verticillium sp. It was concluded that accumulation of proanthocyanidins and lignin is a part of nonspecific immune response of fir to the pathogen action and that the pathogen specific of fir can inhibit induced synthesis of defensive substances by the host plant.


Доп.точки доступа:
POLYAKOVA, G.G.; VETROVA, V.P.; PASHENOVA, N.V.; OSIPOV, V.I.