scholarly journals Fungi colonizing various organs of lemon balm (Melissa officinalis L.) cultivated in South-East Poland

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 347-350 ◽  
Author(s):  
Z. Machowicz-Stefaniak ◽  
E. Zalewska ◽  
B. Zimowska
Keyword(s):  
Rhizoctonia Solani ◽  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Fungal Diseases ◽  
Mineral Medium ◽  
Melissa Officinalis ◽  
Lemon Balm ◽  
One Year ◽  
Made In

On one-year-old and two-year-old plantations of lemon balm observations on the occurrence of plants showing symptoms of fungal diseases were made in 1998–2001. Many fungi were isolated from roots, stem bases and leaves separately on mineral medium. Species of Fusarium, Phoma and Rhizoctonia solani were obtained from the roots and stem bases whereas Alternaria alternata, Phoma spp., Septoria melissae and Botrytis cinerea were most often isolated from the leaves showing symptoms of necrosis.

scholarly journals Fungi isolated from Stewartia pseudocamellia Max. seeds and their pathogenesis

2012 ◽  
Vol 58 (2) ◽  
pp. 255-262
Author(s):  
Halina Kurzawińska ◽  
Piotr Muras
Keyword(s):  
Laboratory Experiment ◽  
Rhizoctonia Solani ◽  
Fusarium Oxysporum ◽  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Typical Composition

The aim of studies was to determine typical composition of fungi occurring on seeds of <i>Stewartia pseudocamellia</i>.The studies conducted on 100 disinfected and 100 nondisinfected seeds of these plants.Isolates of <i>Alternaria alternata</i>, <i>Fusarium oxysporum</i>, <i>Cylindrocarpon radicicola</i> and <i>Rhizoctonia solani</i> were characterized by pathogenicity towards the investigated <i>Stewartia pseudocamellia</i>. In the laboratory experiment, 204 isolations of microorganisms were obtained that belonged to 20 species and form of fungi and bacteria. Among fungi there were both of parasite (<i>Alternaria alternata</i>, <i>Botrytis cinerea</i>, <i>Fusarium</i> spp., <i>Rhizoctonia solani</i>) and typical saprophytic (<i>Cladosporium</i> spp., <i>Penicillium</i> spp., <i>Aspergillus</i> spp., <i>Epicoccum</i> spp., <i>Mucor</i> spp.). The dominant fungus on seeds was <i>Alternaria alternata</i>. Among the investigated isolates only one isolate (R4) <i>Rhizoctonia solani</i>, was strongly pathogenic, isolates (A1) <i>Alternaria alternata</i> were weakly pathogenic to seedlings of <i>Stewartia pseudocamellia</i>.

scholarly journals Fungi occurring on seeds of fodder galega (Galega orientalis Lam.)

2013 ◽  
Vol 53 (2) ◽  
pp. 15-23
Author(s):  
Bożena Cwalina-Ambrozik ◽  
Barbara Majchrzak
Keyword(s):  
Laboratory Experiment ◽  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Mineral Medium ◽  
Galega Orientalis

Laboratory experiment were caried out to isolate fungi from the seeds of goat rue cultivated with and without fertilization. Additionally, kind of medium (PDA and mineral medium) and mean of preparation seeds, were factors differentiated number of fungi. Species such as <i>Alternaria alternata</i> (51,6%) and <i>Botrytis cinerea</i> (20,4% of total colony) were isolated from seeds most frequently. From combination without fertilization 7,2% more isolates were obtained. Mineral medium and superficial disinfection of seeds had reducing influence on number of isolates.

Biotic effect of fungal communities inhabiting grapevine phyllosphere on Phoma negriana

Biologia ◽  
2008 ◽  
Vol 63 (4) ◽  
Author(s):  
Ewa Król ◽  
Zofia Machowicz-Stefaniak
Keyword(s):  
Botrytis Cinerea ◽  
Fungal Community ◽  
Alternaria Alternata ◽  
Fungal Communities ◽  
Series Method ◽  
Phomopsis Viticola ◽  
Biotic Effects ◽  
One Year

AbstractThe effect of 15 fungi species most frequently inhabiting grapevine shoots on the growth of Phoma negriana was examined. Particular species-components of the fungal community were tested in vitro against the pathogen, using the biotic series method. The majority of fungi species inhibited P. negriana growth and the growth of only 3 species from the community, i.e. Alternaria alternata Keiss., Botrytis cinerea Pers. and Phomopsis viticola, was limited by the pathogen. Fungi Trichoderma were found the most effective against P. negriana. They completely degraded the hyphae and conidia of P. negriana after 20–22 days of growth in two-organism cultures. The summary biotic effects of fungal communities from grapevine were generally favourable to the P. negriana growth and only in one year of study they suppressed the pathogen development.

scholarly journals Fungi settling seedlings of Stewartia pseudocamelia (Max.)

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 319-321
Author(s):  
I. Gajda ◽  
H. Kurzawińska ◽  
P. Muras
Keyword(s):  
Rhizoctonia Solani ◽  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Phytophthora Cinnamomi ◽  
Vegetation Period ◽  
Cladosporium Cladosporioides ◽  
Fusarium Avenaceum ◽  
Autumn Season ◽  
Total Community ◽  
Penicillium Spp

Stewartia pseudocamelia is one of more attractive of ornamental bushes. The main of decorative quality are: ornamental flowers, non-typical florescence (from end of June to August), original bark and attractive overcolouring of leaves in autumn season. Apart diseases affected Stewartia during vegetation period, the most dangerous are those which infest seedlings. The total number of 132 colonies of fungi were obtained from the sore seedlings of Stewartia. The isolates represented 19 species of thirteen genera. The most dominated of them were fungi of species: Cladosporium cladosporioides, Cylindrocarpon radicicola, Fusarium avenaceum and F. oxysporum. These above-mentioned fungi together with: Phytophthora cinnamomi, Botrytis cinerea, Penicillium spp., Alternaria alternata, Rhizoctonia solani and Pythium debaryanum belonged to the group of dominants and consistued 79.02% of total community.

scholarly journals Enantioselective Synthesis of Isoxazolecarboxamides and their Fungicidal Activity

2017 ◽  
Vol 59 (2) ◽  
Author(s):  
W. Marek Gołębiewski
Keyword(s):  
Rhizoctonia Solani ◽  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Fungicidal Activity ◽  
Fusarium Culmorum ◽  
Cycloaddition Reaction ◽  
Enantioselective Synthesis ◽  
Dipolar Cycloaddition ◽  
Phytophthora Cactorum ◽  
Nitrile Oxides

<p>A series of new 3-substituted isoxazolecarboxamides have been prepared from aldehydes. The key step was a 1,3-dipolar cycloaddition reaction of nitrile oxides to a,b-unsaturated esters and amides. The cycloadditions to amides were mediated by chiral ligands and several products displayed excellent enantioselectivities. Some of the title compounds exhibited good fungicidal activities against <em>Alternaria alternata</em>, <em>Botrytis cinerea</em>, <em>Fusarium culmorum</em>, <em>Phytophthora cactorum</em>, and <em>Rhizoctonia solani</em> strains.</p>

scholarly journals Plant Extract Valorization of Melissa officinalis L. for Agroindustrial Purposes through Their Biochemical Properties and Biological Activities

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Mouna Souihi ◽  
Rayda Ben Ayed ◽  
Imen Trabelsi ◽  
Marwa Khammassi ◽  
Nadia Ben Brahim ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Biological Activities ◽  
Biochemical Properties ◽  
Major Constituent ◽  
Allelopathic Effect ◽  
Melissa Officinalis ◽  
Lemon Balm ◽  
The North ◽  
Germacrene D ◽  
Leaf Essential Oil

Lemon balm (Melissa officinalis L.) is one of the rare medicinal plants in Tunisia. It was found only in two sites in the north of Tunisia with a small number of plants. The study of germination under the NaCl and PEG effect showed that Tunisian lemon balm seeds were sensitive to saline and osmotic stress. Morphological and biochemical characterizations of Tunisian M. officinalis were performed. Results showed that the Tunisian populations presented plants with long, broad leaves and weak branching. The major constituent in leaf essential oil was germacrene-D with a percentage ranging from 29.17 to 24.6%, and the major fatty acids were polyunsaturated fatty acids, linoleic acid, ranging from 73.93 to 66.74%. The phenolic content of M. officinalis extract varied significantly among origins which could explain the high variation in antiradical scavenging activity. The evaluation of allelopathic activities showed that the extract of the lemon balm leaves presented an allelopathic effect with the majority of the tested seeds.

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