scholarly journals Fungi and fungi-like Oomycetes isolated from affected leaves of rhododendron

2013 ◽  
Vol 43 (1) ◽  
pp. 21-27
Author(s):  
Maria Kowalik
Keyword(s):  
Aspergillus Niger ◽  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Phytophthora Cinnamomi ◽  
Green Areas ◽  
Sordaria Fimicola

The aim of the work is to identify fungi and fungi-like Oomycetes occurring on affected leaves of rhododendron <em>Rhododendron</em> L. Mycological analyses were carried out on 200 leaves collected from green areas of Kraków from May till September 2005. Isolated fungi-like Oomycetes belonged to 67 taxa. The most frequently found fungi included: <em>Alternaria alternata, Aspergillus niger, Botrytis cinerea, Coelophoma empetri, Nigrospora sphaerica, Pestalotia sydowiana, Phialophora cyclaminis, Phomopsis archeri, Septoria azalea</em> and <em>Sordaria fimicola</em>. Among fungi-like organisms <em>Phytophthora cinnamomi</em> and <em>P. citricola</em> were isolated.

scholarly journals Occurrence of pathotypes of Ascochyta pisi (Lib.) in the Olsztyn district

2013 ◽  
Vol 44 (1-2) ◽  
pp. 5-22
Author(s):  
Helena Furgał-Węgrzycka
Keyword(s):  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Stemphylium Botryosum ◽  
Field Peas ◽  
Microscopic Features ◽  
Sordaria Fimicola ◽  
Ascochyta Pisi

The causal agents of leaf and pods spot-pot of peas and field peas in the Olsztyn district was the fungus <i>Ascochyta pisi</i> (Lib.). Investigated isolates of <i>A. pisi</i> differed by macroscopic and microscopic features. From diseases leaves and pods of peas and field peas obtained also saprophitic fungi among which <i>Alternaria alternata, Botrytis cinerea, Cladosporium c1adosporioides, Epicoccum purpurascens, Stemphylium botryosum, Sordaria fimicola</i> and <i>mycelia starilia</i> were dominated. In the study of the identification and distribution of pathotypes of <i>A. pisi</i> five pathotypes were identified among which pathotype 2 were dominated. The identified the pathotypes differed by macroscopic and microscopic features.

scholarly journals Micromycetes colonizing and damaging leaves of evergreen rhododendron (Rhododendron L.) in nursery

2015 ◽  
Vol 32 (2) ◽  
pp. 179-185 ◽  
Author(s):  
Maria Kowalik ◽  
Barbara Kierpiec-Baran ◽  
Klaudia Duda-Franiak
Keyword(s):  
Aspergillus Niger ◽  
Species Composition ◽  
Alternaria Alternata ◽  
Ornamental Plants ◽  
Good Health ◽  
Epicoccum Nigrum ◽  
Susceptibility To Infection ◽  
Trichoderma Koningii ◽  
Sordaria Fimicola ◽  
Humicola Grisea

In May and October 2010–2012, mycological studies were conducted on 10 cultivars of rhododendron bushes growing in containers in the nursery of ornamental plants. Out of 3000 specimens of infested leaf fragments, 2566 fungal colonies belonging to 41 species were isolated. The following species colonizing the leaves and causing their necrosis were extracted in the largest number of colonies: <em>Alternaria alternata</em>, <em>Aspergillus niger</em>, <em>Epicoccum nigrum</em>, <em>Humicola grisea</em>, <em>Pestalotiopsis sydowiana</em>, <em>Phoma pomorum</em>, <em>Sordaria fimicola</em>, <em>Trichoderma koningii</em>, <em>Trichoderma polysporum</em>, <em>Truncatella truncata</em>, <em>Umbelopsis isabellina</em> and others. The research showed that the micromycetes colonies colonizing and damaging rhododendron leaves varied in species composition and number of colonies in different years and at different times. The study determined which rhododendron cultivars were characterized by good health and which had the greatest susceptibility to infection by micromycetes.

scholarly journals Occurrence of pathotypes of Phoma medicaginis var. pinodella (Jones) Boerema in the Olsztyn district

2013 ◽  
Vol 44 (1-2) ◽  
pp. 23-42 ◽  
Author(s):  
Helena Furgał-Węgrzycka
Keyword(s):  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Cladosporium Cladosporioides ◽  
Saprophytic Fungi ◽  
Stemphylium Botryosum ◽  
Field Peas ◽  
Phoma Medicaginis ◽  
Microscopic Features ◽  
Sordaria Fimicola ◽  
Mycelia Sterilia

The causal agents of leaves and pods spot-pot of peas and field peas in the Olsztyn district was the fungus <i>Phoma medicaginis</i> var. <i>pinodella</i>. Investigated isolates of <i>P. medicaginis</i> var. <i>pinodella</i> differed by macroscopic and microscopic features. From diseases leaves and pods of peas and field peas obtained also saprophytic fungi among which <i>Alternaria alternata, Botrytis cinerea, Cladosporium cladosporioides, Epicoccum purpurascens, Stemphylium botryosum, Sordaria fimicola</i> and <i>mycelia sterilia</i> were dominated. In the study on the identification and distribution of pathotypes of <i>P. medicaginis</i> var. <i>pinodella</i> six pathotypes were identified among which pathotype 3 were dominated. The identified pathotypes differed by macroscopic and microscopic features.

scholarly journals Fungi causing dying out of heather seedlings

2012 ◽  
Vol 58 (2) ◽  
pp. 237-242
Author(s):  
Maria Kowalik ◽  
Agnieszka Wandzel
Keyword(s):  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Phytophthora Cinnamomi ◽  
Cylindrocarpon Destructans ◽  
Leptosphaeria Coniothyrium ◽  
Necrotic Symptoms

The aim of the study was to determine the fungi causing dying out of one-yearold heather seedlings. Observations were carried out on: 'Amethyst', 'Annemarie', 'Colette', 'Perestroika' and 'Reini'. The shoots revealing necrotic symptoms were plated on PDA medium. 25 species of fungi were isolated. Among them <i>Pestalotia sydowiana</i>, <i>Alternaria alternata</i>, <i>Cylindrocarpon destructans</i>, <i>Leptosphaeria coniothyrium</i> and <i>Epicoccum purpurascens</i> were dominant, while <i>Mammaria echinobotryoides</i>, <i>Phoma leveillei</i>, <i>Kaissleriella subalpina</i>, <i>Botrytis cinerea</i> and <i>Phytophthora cinnamomi</i> occurred less frequently.

scholarly journals Diversity of fungi colonizing leaves of Rhododendron (Rhododendron L.) cuttings

2014 ◽  
Vol 67 (1) ◽  
pp. 21-26
Author(s):  
Barbara Kierpiec-Baran ◽  
Małgorzata Żołna ◽  
Maria Kowalik
Keyword(s):  
Alternaria Alternata ◽  
Home Gardens ◽  
Large Majority ◽  
Mucor Hiemalis ◽  
Epicoccum Nigrum ◽  
Trichoderma Koningii ◽  
Aspergillus Brasiliensis ◽  
Green Areas ◽  
Sordaria Fimicola ◽  
Ornamental Shrub

<p>Rhododendrons (<em>Rhododendron</em> L.) are shrubs whose attractiveness is determined by their multi-coloured flowers and evergreen leaves. Necroses visible on the leaves of rhododendron cuttings diminish the suitability of nursery material for marketing. These symptoms are most frequently caused by fungi. The investigations were conducted in 2010–2011 in an ornamental shrub nursery to identify fungi colonizing the phyllosphere of rhododendron cuttings and causing leaf necroses. The material for analysis consisted of leaves of 11 rhododendron cultivars. 550 leaves were collected from 110 half-year-old cuttings for mycological analysis. Over 350 fungal colonies belonging to 15 species were isolated from the leaves of rhododendron cuttings. The dominants included: <em>Pestalotiopsis</em> <em>sydowiana</em>, <em>Trichoderma koningii</em> and <em>Alternaria alternata</em>. The influents included: <em>Aspergillus brasiliensis</em>, <em>Mucor hiemalis</em> f. <em>hiemalis</em>,<em> Epicoccum nigrum</em>, <em>Sordaria fimicola</em> and <em>Umbelopsis isabellina</em>. A large majority of the fungi preferred the phyllosphere environment of Yakushima rhododendron (<em>R. yakushimanum</em>) cultivars ‘Sneezy’ and ‘Golden Torch’ as well as of the large-flowered cultivars ‘Flautando’, ‘Dominik’, and ‘Simona’. The phyllosphere of the large-flowered cultivars ‘Bernstein’, ‘Nova Zembla’, and ‘Goldbuckett’ was a reservoir for many fungal colonies and fungi species. The cultivars less susceptible to colonization by fungi and the most promising for planting in green areas and home gardens are the large-flowered cultivars ‘Bernstein’, ‘Nova Zembla’, ‘Goldbuckett’, ‘Rasputin’, and ‘Roseum Elegans’.</p>

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 Qualidade sanitária e fisiológica de sementes de abóbora variedade Menina Brasileira

2006 ◽  
Vol 31 (2) ◽  
pp. 158-163 ◽  
Author(s):  
Derblai Casaroli ◽  
Danton C. Garcia ◽  
Marlove F. B. Muniz ◽  
Nilson L. de Menezes
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Oxysporum ◽  
Alternaria Alternata ◽  
Penicillium Digitatum ◽  
Cucurbita Moschata ◽  
Rhizopus Stolonifer ◽  
Cladosporium Cucumerinum

O trabalho teve como objetivos avaliar e correlacionar a qualidade sanitária e fisiológica de sementes de abóbora, variedade Menina Brasileira (Cucurbita moschata.). Foram avaliados dois lotes de sementes de abóbora produzidas no sistema agroecológico e quatro no sistema convencional, com e sem tratamento químico. Os lotes foram submetidos aos testes de sanidade, seguindo a metodologia do "Blotter test", com congelamento, germinação e vigor (primeira contagem, índice de velocidade de germinação, envelhecimento acelerado e emergência de plântulas). Os resultados indicaram a separação dos lotes de diferentes origens a partir da qualidade sanitária e fisiológica, onde as maiores incidências de fungos foram observadas nos lotes agroecológicos e o maior potencial fisiológico foi observado nos lotes de origem convencional não tratados. Foram encontrados os fungos Fusarium oxysporum, Alternaria alternata, Cladosporium cucumerinum, Aspergillus niger, Penicillium digitatum, Rhizopus stolonifer e Phoma terrestris. A qualidade sanitária não interferiu na qualidade fisiológica das sementes de abóbora, variedade Menina Brasileira.

scholarly journals Seasonal fluctuations of phyllosphere and phylloplane fungi of Egyptian wheat

2014 ◽  
Vol 21 (1) ◽  
pp. 109-116 ◽  
Author(s):  
M. B. Mazen ◽  
S. I. Abdel-Hafez ◽  
G. M. Shaban
Keyword(s):  
Aspergillus Niger ◽  
Alternaria Alternata ◽  
Seasonal Fluctuations ◽  
Frequent Species ◽  
Phylloplane Fungi

Forty-nine species and 20 genera were collected irora the phyllosphere and phylloplane of wheat plants on 1% glucose and 50% sucrose-Czapek's agar at 28°C. The total counts of phyllospbere and phylloplane fungi displayed seasonal periodicities and the highest counts were found in April and May 1977, 1978. In the case of phyllosphere the most frequent species were <i>Aspergillus niger, Penicillium corylophilum</i> and <i>Alternaria alternata</i>; in the phylloplane <i>Aspergillus niger</i> and <i>A. flavus</i>.

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