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A list and the distribution of Oomycota species in the Tatra Mts (Western Carpathian Mts) are presented. Revised herbarium vouchers and literature data were used for analysis. Thirty two species of oomycetes on fifty seven plant species were noted in the area, including two species of the order Albuginales (genera: Albugo and Pustula, on nine plant species), 29 species of the order Peronosporales (genera: Bremia, Hyaloperonospora, Peronospora and Plasmopara, on 49 plant species), and one species of the order Pythiales (genus: Myzocytium, on one species of algae). Twenty nine species were collected on the Polish side of the Tatra Mts and ten species were collected on the Slovak side. The oomycetes were collected at 185 localities.
Field studies on the health of American ginseng cultivated in the Lublin district on poor sandy soil were conducted in the years 2004-2006. The studies involved treatment combinations with irrigation and without irrigation as well as foliar fertilization with Alkalin PK and Resistim of American ginseng plants. Mycological analysis was made of diseased ginseng parts with the aim of determining the quantitative and qualitative composition of fungi-like organisms and fungi threatening the cultivation of this plant. Fungi from the genera of Cylindrocarpon, Fusarium and the following species Alternaria alternata, , Rhizoctonia solani, Sclerotinia sclerotiorum, as well as fungi-like organisms: Pythium irregulare and Phytophthora sp., were isolated from the infected parts of ginseng. The smallest number of fungi was isolated from the plants growing on the plots without irrigation and those where foliar application with Alkalin PK was applied.
The authors described and illustrated 8 rare aquatic fungus-like organisms of the order Lepto­mitales (Chromista), which were isolated from the water of nine water bodies of different trophy of north-eastern Poland: Apodachlya punctata, Apodachlyella completa, Araiospora spinosa, Mindeniella spinospora, Nellymyces megaceros, Rhipidium europaeum, Sapromyces androgynus, and Sapromyces elongatus.
Water fungi and fungus-like organisms as a biological factor of ecological water systems have significant influence on the environment and its modification. They decompose necrosis substrates found in water bodies. Fungi also can act as facultative parasites and then frequently occur on their hosts. The main aim of the present study is to investigate which of the fungi and straminipiles can grow on the liver fluke Fasciola hepatica in the River Narewka and in natural ponds of Białowieża village. In order to isolate fungi and fungus-like organisms, fragments of adults and eggs from liver flukes were introduced as bait into samples from each water body. The occurrence and growth of aquatic fungi and fungus-like organisms on Fasciola hepatica was investigated in laboratory conditions. The liver fluke F. hepatica used in this study was collected from free-living European bisons, Bison bonasus, which were killed in Białowieża Primeval Forest. The adult liver fluke F. hepatica turned into the habitat for seventeen species of fungi and straminipiles. They were Achlya polyandra, A. prolifera, Apodachlya brachynema, Aphanomyces laevis, Ap. irregularis, Catenaria anguillulae, Dictyuchus monosporus, Leptolegnia caudata, Leptomitus lacteus, Pythium debaryanum, Sirolpidium zoophtorum, Saprolegnia diclina, S. glomerata, S. hypogyna, S. monoica, S. ferax and S. parasitica. Six fungal species such as Achlya prolifera, Aphanomyces irregularis, Myzocytium zoophthorum, Catenaria anguillulae, Saprolegnia ferax and S. parasitica were found on F. hepatica eggs. The majority of fungi which were marked on F. hepatica were animal parasites or necrotrophs (13).
All morphological parts of sweet flag (calamus), particularly rhizomes are used not only as a herbal material, but also in confectioner and cosmetic industry. Both quantity and quality of the material which may be obtained exclusively from natural stands are determined by the fungi accompanying the plant’s vegetation. Hence, in the years 2005−2006 research was conducted to determine the diversity of mycobiota which induce chlorosis and necrosis of calamus leaves. It was found that phyllospherae of calamus is colonized by 24 taxa. Ramularia aromatica and Ascochyta acori were the two most often isolated monophagous agents of necrosis. Polyphagous facultative parasites included Fusarium sporotrichioides and Epiccocum nigrum, Alternaria alteranta and A. tenuissima. It is also important that there was the discovery of the presence of Athelia rolfsii and Fusarium incarnatum which are polyphagous species causing destruction of the tissue in tropical and subtropical climate. Due to biochemical activity of most of the isolated species and their ability to induce production of toxins, the content of active substances in calamus may be reduced and consequently diminishes its market value.
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