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Wyświetlanie 1-7 z 7
Tytuł:
Interaction between microfungi from arable and fallow land soils and Heterobasidion annosum in vitro
Autorzy:
Werner, A
Zadworny, M.
Powiązania:
https://bibliotekanauki.pl/articles/41051.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
microfungi
arable land
arable soil
Heterobasidion annosum
soil fungi
growth measurement
fallow
in vitro
Opis:
Interactions between members of microfungal communities of three arable and two fallow land soils and three P strains of Heterobasidion annosum were investigated in vitro. The effect of soil fungi on the pathogen was evaluated with two methods. In the first, the mycelial growth of H. annosum strains was measured and the experimental data were analysed using statistics. In the second, the biotic series method was used. The differences between the effects of soil fungi dominating in arable and fallow land soils were statistically significant. The microfungal communities of fallow land soils inhibited the growth of the pathogen more than those inhabiting arable soils. Evaluation of suppressive effect of the soil fungi on the pathogen with biotic series method showed also far more negative influence of microfungal communities of fallow land soils on the growth of H. annosum strains. Considering the positive effect of chemical and biological properties of the fallow land soils on the growth of Scots pine and highly suppressive effect of microfungal communities of these soils on the growth of H. annosum observed in the presented study, it may be concluded that arable soils left barren for many years are more beneficial for establishing of Scots pine plantations than cultivated soils.
Źródło:
Dendrobiology; 2002, 47
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sposoby modernizacji tradycyjnych budynków drewnianych na terenach jurajskich
Modernization Ways of Traditional Wooden Buildings in the Jura Areas
Autorzy:
Sołkiewicz-Kos, N.
Zadworny, M.
Powiązania:
https://bibliotekanauki.pl/articles/2065076.pdf
Data publikacji:
2012
Wydawca:
Politechnika Częstochowska
Tematy:
drewniany budynek mieszkalny
docieplenie przegród zewnętrznych
wooden summer building
thermal insulation or external partitions
Opis:
Na obszarze Jury Krakowsko-Częstochowskiej zachowało się wiele budynków o konstrukcji drewnianej, których stan wymaga przeprowadzenia prac renowacyjnych. Modernizacja takich obiektów w celu przystosowania ich do współczesnych wymogów w zakresie fizyki budowli jest skomplikowana i wymaga indywidualnych decyzji. W artykule przedstawiono rozwiązania możliwości modernizacji drewnianych budynków letniskowych zlokalizowanych na terenie Olsztyna, miejscowości znajdującej się w pobliżu Częstochowy. Podano rozwiązania projektowe modernizowanych ścian zewnętrznych i stropów.
This article concerns different aspects or summer buildings on the examples located in Olsztyn near Częstochowa. It presents simplified architectural analysis or a wooden building which is a typical example or recreation building in this area.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2012, 1 (9); 119--128
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accumulation of iron-binding compounds in root of Pinus sylvestris challenged by Heterobasidion annosum sensu lato
Autorzy:
Mucha, J.
Guzicka, M.
Lakomy, P.
Zadworny, M.
Powiązania:
https://bibliotekanauki.pl/articles/41731.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
accumulation
iron-binding compound
root
Pinus sylvestris
Heterobasidion annosum
siderophore
organic acid
iron reduction
plant infection
Scotch pine
Opis:
We examined the interaction between the roots of Pinus sylvestris and closely related species Heterobasidion annousum s.l. (H. annosum s.s., H. parviporum, H. abietinum) that differ in host plant preference. The aim of the current study was to determine in roots the accumulation pattern of low molecular mass compounds such as catecholate and hydroxamate derivates, oxalic acid as well as iron-reduction ability of that low molecular mass compounds, that play important roles in wood degradation and they are also involved in pathogenesis. The accumulation of catechol and hydroxamate derivates increased during the early (2–6 h) and late (24–48 h) stages of interaction and similar pattern of oxalic acid accumulation were observed. The level of catecholate derivates in P. sylvestris roots that were challenged with H. parviporum or H. abietinum correlated strongly with iron reducing ability. However, when host was exposed to H. annosum s. s. hydroxamates rather than catecholates regulated iron reducing ability. The extracellular Fe3+ reducing activity was greater for H. annosum s. s. isolates than for isolates of two other species, and reduction of ferric iron may promote oxidative burst in host cell and fungal colonization. Catecholate concentration in the presence of H. annosum s.s. contributing to host cell death, confirm iron involvement in infection success.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Initial stages of host-pathogen interaction between Pinus sylvestris seedling roots and the P-, S- and F-intersterility group isolates of Heterobasidion annosum
Autorzy:
Werner, A
Lakomy, P.
Idzikowska, K.
Zadworny, M.
Powiązania:
https://bibliotekanauki.pl/articles/41681.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Pinus sylvestris
seedling root
Heterobasidion annosum
host-pathogen interaction
adhesion
hyphal growth
penetration
root surface
Opis:
Prepenetration and penetration phenomena after inoculation of roots of Pinus sylvestris seedlings grown in vitro with the P-, S- and F-group isolates of Heterobasidion annosum were observed using scanning electron microscop. There were no differences in the behaviour of hyphae and in the appearence of mycelia formed by the three IS-group isolates. Four types of the root penetration by hyphae were observed. In the first, the entrace of hypha into root was achieved throught tiny pore formed in walls of the cortical cells. In the second, swellings resembling appressoria were formed by the hyphal tips at the points of contact with the root surface. In the third, the hyphae penetrated cells through holes in eroded areas of roots, and in the fourth by the natural crevices at points of the cortical cell junctions. It is concluded that the different frequencies of the four types of penetration observed after inoculation with isolates of the three IS group should be carefully explained in term of their different pathogenic and saprobic capabilities on pine.
Źródło:
Dendrobiology; 2005, 54; 57-63
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early stage development of IS-group isolates of Heterobasidion annosum on Abies alba roots - scanning electron microscopical studies
Autorzy:
Werner, A
Lakomy, P.
Idzikowska, K.
Zadworny, M.
Powiązania:
https://bibliotekanauki.pl/articles/41782.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Abies alba
root
Heterobasidion annosum
isolate
early stage
scanning electron microscopy
adhesion
hypha behaviour
root surface
Opis:
The growth of hyphae and prepenetration phenomena on Abies alba roots after inoculation with the P-, S- and F-group isolates of Heterobasidion annosum were observed using scanning electron microscope. Elongated hyphae emanating from the inocula grew indiscriminately across and along root tips and entered the cortical cells randomly, while in subapical root areas they quite often grew along grooves at points of cell junctions. The ridges, folds and depressions seen on the root surface obviously directed the hyphal growth and their further entrance into roots through natural crevices or cracks. Although hyphae of all the isolates could penetrate the roots directly through small openings, the hyphae of the F isolate penetrated preferably more eroded and older parts of roots. A peculiar habit of the direct penetration, characterized by formation a structure resembling infection peg, was observed only after inoculation with the P and S isolates. It is suggested that specifically frequent penetration the roots in eroded areas by the hyphae of the F isolate may be one of the factors connecting with its lower pathogenic capabilities.
Źródło:
Dendrobiology; 2006, 55; 57-63
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of elevated temperature and fluorine pollution on relations between the pedunculate oak (Quercus robur) and oak powdery mildew (Microsphaera alphitoides)
Autorzy:
Grzebyta, J
Karolewski, P.
Zytkowiak, R.
Giertych, M.J.
Werner, A.
Zadworny, M.
Oleksyn, J.
Powiązania:
https://bibliotekanauki.pl/articles/41557.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
pedunculate oak
Quercus robur
environment pollution
phenol
tannin
lignin
carbohydrate
starch
nitrogen
fluorine
oak powdery mildew
Microsphaera alphitoides
soil pollution
Opis:
Effects of elevated temperature and soil pollution with fluorine on host-pathogen relations were studied in seedlings of the pedunculate oak (Quercus robur L.) inoculated with oak powdery mildew (Microsphaera alphitoides Griff. et Maubl.) and control seedlings. The plants were grown for 1month in elevated temperature (on average by 1.6°C) and soil pollution with sodium fluoride (330 ppm F). The above factors did not have any significant effect on nitrogen content of leaves or on concentrations of metabolites favourable to growth and development of the fungal pathogen (total non-structural carbohydrates, including soluble carbohydrates and starch) and those unfavourable to fungi (soluble phenols, condensed tannins and lignins). The elevated temperature and fluorine pollution did not affect the leaf infection rate. However, a significant temperature × pollution interaction was observed in inoculated seedlings. At the elevated temperature, fluorine caused a less severe infection by powdery mildew. This could be due to a direct toxic effect of fluorine on the pathogen or by an indirect influence, resulting from changes in levels of other metabolites, which were not analysed in this study. The inoculation of oak seedlings with powdery mildew caused a decline in the carbohydrate content of leaves but did not have any significant effect on levels of other analysed metabolites. However, it significantly affected the distribution of phenols and lignins in oak leaves. Those compounds accumulated within necrotic lesions and in adjacent cells. Our results do not enable drawing definite conclusions on effects of a slight rise in temperature and a relatively low level of fluorine pollution of the soil on relations between the pedunculate oak and oak powdery mildew. Lower values of the leaf infection rate in seedlings growing in elevated temperature and fluorine pollution suggest that in warmer years a lower level of infection by M. alphitoides may be expected in areas affected by fluorine pollution.
Źródło:
Dendrobiology; 2005, 53; 27-33
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzorcowanie stanowisk z kontrolnymi zbiornikami dzwonowymi w zakresie małych dawek pomiarowych
Calibration of bell prover in the small volumes range
Autorzy:
Wildner, J.
Zadworny, A.
Turkowski, M.
Szudarek, M.
Szczecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/952614.pdf
Data publikacji:
2018
Wydawca:
Główny Urząd Miar
Tematy:
kontrolne zbiorniki dzwonowe
wzorcowanie
Dysze Venturiego
niepewność pomiaru
bell prover
calibration
Venturi sonic nozzles
measurement uncertainty
Opis:
W artykule przedstawiono metodę wzorcowania stanowisk z kontrolnymi zbiornikami dzwonowymi, opartą na zastosowaniu dysz Venturiego o przepływie krytycznym, jako wzorców pośredniczących. Zaproponowana metoda pozwala na wzorcowanie dawek pomiarowych o objętości od ok. 5 dm3, z niepewnością mniejszą niż 0,2 %.
Źródło:
Metrologia i Probiernictwo : biuletyn Głównego Urzędu Miar; 2018, 2 (21); 26-30
2300-8806
Pojawia się w:
Metrologia i Probiernictwo : biuletyn Głównego Urzędu Miar
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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