Рубрики:
SCOLYTUS-VENTRALIS COLEOPTERA
MOUNTAIN PINE-BEETLE
NORWAY-SPRUCE
BARK BEETLES
FIR ENGRAVER
GRAND FIR
INOCULATION
GROWTH
MONOTERPENES
SCOLYTUS-VENTRALIS COLEOPTERA
MOUNTAIN PINE-BEETLE
NORWAY-SPRUCE
BARK BEETLES
FIR ENGRAVER
GRAND FIR
INOCULATION
GROWTH
MONOTERPENES
Аннотация: Effect of tannin and non-volatile components of lesion resin on the growth of blue-stain fungi - Ceratocystis laricicola, C. polonica, Ophiostoma minus, Leptographium sp. and Ophiostoma sp. - the primary invaders of conifers in Siberia (Russia), has been studied. The fungi under study exhibited tolerance to plant's defensive substances in bioassays. The cultures of Leptographium sp., C. polonica, and Ophiostoma sp. proved to be the most tolerant to tannin. In the range between 0.05 and 0.15% tannin concentration their growth tended to stabilize. Less tolerant to tannin were C. laricicola and O. minus. With an increase in tannin concentration their biomass gradually decreased. The fungi more tolerant to tannin regulated the medium pH about 5.0 and higher, white the species which were less tolerant preferred lower pH values. Lesion resins of conifers differed in their inhibitory effect on fungal growth. Fir resin had the greatest inhibitory effect of all the conifer resins tested, causing reduction to 50-60% in fungal growth. When fungi were grown on the resin of any other conifer, the reduction in the linear growth rate did not exceed 20 to 30%. The assumption that fungi are more tolerant to the resin of a host plant than to that of a non-host plant has not been confirmed.
WOS
Держатели документа:
Russian Acad Sci, Inst Forest, Microbiol Lab, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Pashenova, N.V.; Vetrova, V.P.; Polyakova, G.G.; Lieutier, F \ed.\; Mattson, WJ \ed.\; Mattso, WJ \ed.\