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

[Text] / G. G. Polyakova, V. V. Stasova, N. V. Pashenova // Russ. J. Plant Physiol. - 2011. - Vol. 58, Is. 5. - P819-827, DOI 10.1134/S1021443711050177. - Cited References: 23. - This work was supported by the Russian Foundation for Basic Research, project no. 09-04-09030. . - 9. - ISSN 1021-4437РУБ Plant Sciences

Аннотация: Ophiostomatoid fungi colonize the conducting tissues of conifer stems, the phloem and the xylem. These pathogenic fungi penetrate into the stem through injuries made by xylophagous insects vectoring these pathogens. In this study the response of the phloem of Scotch pine (Pinus sylvestris L.) to wounding (treatment 1) was compared with the response to wounding combined with application of high-molecular-weight compounds isolated from the mycelium of the ophiostomatoid fungus Ceratocystis laricicola Redfern & Minter (treatment 2). Both treatments induced the appearance of necrosis in the inner bark, the formation of periderm separating living and dead tissues, and formation of the callus alongside the wound perimeter. In addition, the bark accumulated lignin, bound proanthocyanidins, and resins, with a parallel decrease in the content of free proanthocyanidins, low-molecular-weight carbohydrates, and non-lignin components of the cell wall (P > 0.95). The size of necrotic spots, as well as changes in the content of most substances, were significantly higher in the treatment 2 than in the treatment 1 (P > 0.95). The accumulation of lignin in cell walls of phloem sieve cells was delayed in the treatment 2 as compared with that in the treatment 1. This suggested that the mycelial extract temporarily inhibited lignification at the early stage of the wound response. This disturbance of the cell wall protective transformation led to the hypothesis that the fungal suppressors retard the repair of inner bark injured by insects, thereby favoring the invasion of conifer tissues by ophiostomatoid fungi.

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Держатели документа:
[Polyakova, G. G.
Stasova, V. V.
Pashenova, N. V.] Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Polyakova, G.G.; Stasova, V.V.; Pashenova, N.V.

/ V. G. Soukhovolsky, P. A. Krasnoperova, E. N. Palnikova [et al.] // Contemp. Probl. Ecol. - 2019. - Vol. 12, Is. 7. - P753-759, DOI 10.1134/S1995425519070126. - Cited References:42. - This work was financially supported by the Russian Federal Property Fund (grants nos. 15-04-01192-a and 17-29-05074 ofi-m). . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: The time series of the radial increment of pine Pinus sylvestris L. in 1945-2015 were studied on the territory of the Krasnoturansky pine forest in the stands damaged during the outbreak of the pine looper Bupalus piniarius L. in 1974-1978 and in the stands not damaged by the pest. To assess the differences in the processes of radial increment of trees in damaged and undamaged stands before the outbreak, it is proposed to use the regulatory characteristics of time series, such as the values of n delay (autocorrelation) and the amplitude s of fluctuations in time series. According to these indicators, one can numerically assess the inertia of the processes of regulation of radial increment. Since the regulatory characteristics can only be correctly calculated for stationary time series, the series of the first differences of the radial increment were used for the calculations. The trees in the stands that were attacked by insects were characterized either by the absence of delay in the time series, or by sufficiently large values of the order of autocorrelation (n). Moreover, fluctuations in the current radial increment relative to the age trend were significantly greater in trees in damaged stands than in undamaged ones. The rate of growth recovery in trees damaged by insects depending on the regulatory characteristics of the time series of radial increment before the onset of damage was assessed. The obtained characteristics can be used to assess the risk of phyllophages' attacks on stands and the rate of restoration of stands damaged by insects.

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Держатели документа:
Russia Acad Sci, Forest Inst, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Reshetnev State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Soukhovolsky, V. G.; Krasnoperova, P. A.; Palnikova, E. N.; Sviderskaya, I., V; Tarasova, O., V; Russian Federal Property Fund [15-04-01192-a, 17-29-05074 ofi-m]

/ V. G. Soukhovolsky, P. A. Krasnoperova, E. N. Pal'nikova [et al.] // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 7. - P754-760, DOI 10.1134/S1995425520070124. - Cited References:42. - This study was supported by the Russian Foundation for Basic Research, project nos. 15-04-01192a and 17-29-05074ofi-m. . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: This study compares the 1945-2015 time series of the radial growth rate of pine Pinus sylvestris L. damaged by the 1974-1978 outbreak of the pine looper moth Bupalus piniarius L. and those of the undisturbed Krasnoturansk pine forest. It is proposed to employ regulatory characteristics of time series, including the order of autoregression (lag value n) and standard deviation of the amplitude of time series oscillation s (number of the first differences of radial growth s), to estimate differences between radial growth rates of trees in damaged and intact stands. These indicators allow for a quantitative assessment of the lag of the processes regulating the radial growth rate. Only the first differences of the series of radial growth rate are assessed, inasmuch as the regulatory characteristics can be correctly calculated only for the stationery time series. Trees exposed to insect outbreak either have no lag in the dynamics of the first differences of the series in the radial growth rate or they have high values of autoregression order n. At the same time, the oscillations of the current radial growth rate of damaged trees in relation to the age gradient are significantly larger than in undisturbed trees. We estimate the speed of the growth-rate recovery in damaged trees as a function of regulatory characteristics of time series of the radial growth rate before the damage. These data could be used to assess the pest hazard in the stands and recovery rates of forests damaged by insect outbreaks.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Soukhovolsky, V. G.; Krasnoperova, P. A.; Pal'nikova, E. N.; Sviderskaya, I., V; Tarasova, O., V; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [15-04-01192a, 17-29-05074ofi-m]