Abstracts

No. 35, Vol. 6, 2001

 

Biodiversity, taxonomy, ecology

Zhdanova N.N., Zakharchenko V.A., Artyshkova L.V., Schkolny A.T., Vasilevskaya A.I. Mycobiota of radionuclides polluted soils of limits zone of ChNPP in 14 years after accident // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.1-8

Abstracts:

According to early elaborated methoda of mathematical ecology fungal species – bioindicators of high, middle and low lrvel of radioactive pollution of soils and forest litters oflimits zone ChNPP were discovered. There are Chaetomium aureum and Paecilomyces lilacinum; Acremonium strictum and Arthrinium phaeospermum; Metarhizium anisopliae and Myrothecium roridum respectively.The monitoring during 14 years of this region confirmed the significance of discovered species and allowed to appreciate the level of the rehabilitation processes in these econiches.

Zmitrovich I.V. Contribution to the taxonomy of corticoid fungi. I. The genera Athelia, Byssomerulius, Hyphoderma, Odonticum // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.9-19

Abstracts:

The genera Athelia, Byssomerulius, Hyphoderma and Odonticum are investigated in the taxonomical aspect. Athelia phialophora Zmitrovich et Spirin sp.nov. is described. Four new combinations are proposed.

Kirbağ S., Civelik Ş., Huseynov E. A new Puccinia on Centaurea from Turkey // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.20-21 (In English)

Kirsideli I.Yu. Micromycetes from soil near the Solnechnaya bay (the Bolshevik island, the Archipelago Northern Land) // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.22-28

Abstracts:

Microfungi were isolated from 50 soil samples collected at Solnechnaya bay (the Bolshevik island, the Archipelago Northern Land, 78˚13΄S., 103˚15΄W). All material was collected in august 1998. 43 taxa, mainly fungi imperfecti and different types of sterile mycelia were isolated. Fungi occurred prevalently in soil contaminated with animal dung and petroleum. Colony Forming Units number changes from 0.13 to 0.22·103 CFU gramme-1 soil. Micromycetes communities are characterized by comparatively small number of species. The main species isolated were Chloridium sp., Chrysosporium pannorum, Monodictys paradoxa, Penicillium lanosum. The distribution of these taxa in different sample types was analysed, possibly due to the stronger influence of human and animals.

Mel’nik V.A., Belomesyatseva D.B. Matsushimaea fasciculata – a new hyphomycetr for mycobiota of Leningrad Region and Byelorussia // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.29-31

Abstracts:

Data on record of Matsushimaea fasciculata (Dematiaceae, Hyphomycetes) on Juniperus communis in Leningrad Oblast’ (Russia) and Minsk Oblast’ (Belarus) is given. It is the first record in Europe.

Physiology, biochemistry, biotechnology

Ershova E.Yu., Efremenkova O.V., Zenkova V.A., Tolstykh I.V., Dudnik Yu.V. The revealing of antimicrobial activity of strains of the genus Coprinus // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.32-37

Abstracts:

Antimicrobial activity of 14 strains of the genus Coprinus against 14 test cultures was studied. 13 strains in liquid cultures demonstrated antimicrobial activity. Some of them active against grampositive, gramnegative bacteria and fungi, other – against grampositive and gramnegative bacteria. Several Coprinus strains active only against grampositive bacteria.

Sviridova O.V., Mikhaleva L.V., Vorobyov N.I., Kochetkov V.V. Decomposition of bark of coniferous trees by fungi and bacteria // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.38-47

Abstracts:

In model experiments the influence of biological stimulators on the decomposition of bark of coniferous trees was investigated. The microbial preparations containing the lignin decaying microorganisms were used in experiment as biological stimulators, and also pork and chicken manure. After 3 months of composting the physical, chemical and microbiological analyses were carried out, microorganisms (Trichoderma, Penicillium, Aspergillus, Fusarium and Mucor) were idetified and the biomass of macromycetes was determined. For the purpose of determination the scheme of interaction and the composition of the complex of microbes decomposed bark the correlation analysis was carried out and the graph of maximal correlation was constructed in the result. Proteolitic, humus-decaying, nitrogen-fixing, amilolytic bacteria and macromycetes (fungi of “white rot”) are in the complex of microbs. The research demonstrate the promotion of bark decomposition in the modifications which containing the complex of mocroorganisms. In test experiments was shown that the composts stimulate the growth of radish seedlings and inhibite the development of phytopathogenic Fusarium oxysporum.

Phytopathogenic fungi

Boroday V.V., Kirik N.N., Koltunov V.A. Pathological changes in roots of carrot causal by fungi during the storage // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.48-51

Abstracts:

The paper presents the report on studies of the prevalence and harmfulness of the white, grey, black and brown rots of roots in the right-bank Forest-Steppe of Ukraine. The evaluation of recognized and promising carrot varieties as to their resistance to the group of parasites has been conducted. Close connection between resistance of carrot varieties to the diseases and group of biochemical compound was established.

Zhalieva L.D. Species composition of the agents caused rots of roots of winter wheat // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.52-57

Abstracts:

Species composition of the agents caused rots of roots of winter wheat, its changes in years and its connection with phases of development of plants were studied. The influence of some agricultural methods on species composition was research during 1994-1999. Different characteristics (morphological, biological and immune status) influence on appearance of definite species in thus complex of agents caused rots.

Konovalova G.S. Variability of morphological, biochemical and pathogenic properties of Rhynchosporium secalis at somatic hybridization. II. Pathogenic properties of induced mutants and heterocaryons // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.58-65

Abstracts:

The significant difference of virulence was showed in morphological and auxotrophic mutants compared with the initial parental strains of Rhynchosporium secalis. The induced mutants had reduced virulence to test barley varieties; some auxotrophic mutants lost the capacity to attack plants. Probably, changes in the virulence of induced mutants were explained by pleiotropic effect of mutants, producing the changes of morphology and auxotrophy or by another mutations. The virulence R.secalis is not connected with morphology of strains. The virulence of the most heterocaryons was differ from virulence of parental strains and it is not depended on the ratio of parental nuclear components in the heterocaryons. Some heterocaryons showed the reassotment of virulence characters on some test barley varieties. The result of genetic investigation of heterocaryons allow to suppose, that asexual recombination can occur in R.secalis, but mutations play more role in the variability of this pathogen.

Shayakhmetov I.F. Biological activity of metabolits from culture filtrate of Cochliobolus sativus and Fusarium oxysporum in connection whith in vitro cellular selection of crop plants for resistance to phytopathogens // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.66-71

Abstracts:

The effects of the C.sativus culture filtrate (CF) and the toxic substance (TS) obtained from CF on root growth of seedlings were studied in several cereals. CF at the cocentration 30-50%/v and TS at levels of more than 75 μg/ml had inhibitory effects on root growth of seedlings, exept maize plants. There was no correlation between pathogenicity and the amount of the TS produced by several strains of H.sativum. TS was conclused to be one of the toxic component among the multitude metabolites of this fungi. Levels of auxin (IAA) and abscisic and (ABA) also have been determined by immunoassay in both C.sativus and F.oxysporum CF. Our results show that the content of ABA and IAA considerably depends on nutrien medium used for culture of fungi.

Chronicle

Ermilova I.A. Yuliya Petrovna Nyuksha (in connection with the anniversary) // Mycol. and phytopat. No. 35, Vol. 6, 2001. P.72-90