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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The development of Erysiphe alphitoides and E. hypophylla in the urban environment

100%
Sucharzewska E.
Acta Mycologica
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2009
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tom 44
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nr 1
109-123
Differentiated responses of Erysiphe alphitoides and E. hypophylla in urban conditions are described. The influence of transport pollution on the morphology of the mycelium, chasmotecium development and individual stages of the developmental cycle is discussed.
2

Mączniak prawdziwy dębu

100%
Baranowska-Wasilewska M., Behnke-Borowczyk J., Szewczyk W., Wajchman S.
Przegląd Leśniczy
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2015
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tom 25
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nr 03
3

Populacja mączniaka prawdziwego dębu w zachodniej Polsce

100%
Behnke-Borowczyk J., Baranowska-Wasilewska M.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
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2017
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tom 16
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nr 4
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Influence of cutting off distal ends of Quercus robur acorns on seedling growth and their infection by the fungus Erysiphe alphitoides in different light conditions

80%
Giertych M. J., Suszka J.
Dendrobiology
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2010
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tom 64
Quercus robur seedlings are very often infested by oak powdery mildew caused by Erysiphe alphitoides. This disease attacks primary leaves with high insolation. In our experiment seedling growth in different light conditions was observed. Seedlings were derived from intact seeds or from seeds where the distal ends of acorns were cut off. Acorns were sown in pots at four light conditions (2%, 8% and 30% light transmittance and in full sunlight). For half of the seedlings we reduced the influence of powdery mildew by using a fungicide. Height of seedlings, shoot dry mass and the degree of damage caused by Erysiphe alphitoides were measured. The highest damages were in full light conditions and the lowest in the 30% light treatment. The influence of acorn reduction on powdery mildew infection was not significant (p=0.0763), however, in the full light conditions the seedlings from cut acorns were ca. 30% less damaged. The cutting of acorns also alters the height of seedlings and shoot mass. The tallest seedlings were from cut seeds growing in the 30% light treatment. The influence of the fungicide was lowest in the 30% light treatment where the decrease in damage was only ca. 10%. For nursery practice we can say that oak seedling production from cut off acorns under 30% light transmittance should give the best results of seedling growth even without the fungicide application.
5
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Występowanie Erysiphe alphitoides w drzewostanach dębowych dotkniętych klęską powodzi

80%
Szewczyk W., Kuzminski R., Manka M., Kwasna H., Lakomy P., Baranowska-Wasilewska M., Behnke-Borowczyk J.
Leśne Prace Badawcze
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2015
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tom 76
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nr 1
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Zastosowanie technik biologii molekularnej do detekcji Erysiphe alphitoides (Griffon & Maubl.) U. Braun and S. Takam. w organach roślinnych

80%
Roszak R., Baranowska M., Belka M., Behnke-Borowczyk J.
Sylwan
|
2019
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tom 163
|
nr 09
Erysiphe alphitoides causes the most common disease of assimilation apparatus of oaks of different age. It is believed that the pathogen overwinters in buds of the host plant or in the cracks of the bark. The aim of the study was to search for the presence of E. alphitoides in buds, leaves, and wood of sessile oak shoots using molecular techniques. Two hypotheses have been tested: (i) oaks are infected by E. alphitoides, and (ii) the pathogen overwinters in the host plant buds. The samples used in the study were collected form sessile oak trees (Miradz Forest District; 52°41'23.197"N, 18°25'33.942"E) in 2017, and consisted of dormant buds (collected in May), young leaves (collected in June), leaves with visible symptoms of the disease (collected in August), shoot with sip and surface layers of wood (collected in December). Additional part of buds was collected in May 2018. The PCR reaction was carried out with primers specific for E. alphitoides and E. hypophylla. For species identification Sanger method was used. The resulting sequences were compared using BLAST algorithm with reference sequences deposited in the NCBI database. Sequences from isolates obtained from leaves showed 97−99% similarity to the reference sequence of E. alphitoides. Pathogen did not occur in the superficial layers of shoots and buds. As some studies show, at very low temperatures (below –20°C), the mycelium of the pathogen dies, therefore further study should be undertaken on wintering of the pathogen causing the powdery mildew disease on oaks. It also should be examined whether the pathogen overwinters in the form of bagnial spores produced in chasmothecia overwintering on leaves, in the leaf buds, or in bark cracks, and whether the wintering site of the pathogen is related to the age of trees and or to the stands where the trees grow.
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