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Micromycetes on climbing roses leaves (Rosa L.) in the Botanic Garden of the Jagiellonian University in Cracow

100%

Kowalik M., Duda-Franiak K.

Acta Mycologica

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2015

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tom 50

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nr 1

Micromycetes inhabiting the leaves of 20 cultivars of climbing roses (Rosa L.), grown in Botanic Garden of the Jagiellonian University in Cracow was investigated in the three successive years of research. Sixty-five taxa of of micromycetes was recorded with a few species dominating: Alternaria alternata, Epicoccum nigrum, Pestalotia rosae, Penicillium brevicompactum and Sordaria fimicola, accompanied by various other microfungi. A high abundance of rose black spot caused by Diplocarpon rosae was also observed. The affected leaves revealed advancing necrosis, substantially enhancing at the end of the growing season. Defoliation took place from June to October. Micromycetes inhabiting the leaves of climbing roses in Botanic Garden of the Jagiellonian University in Cracow considerably deteriorated the decorative aspect of the plants.

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

80%

Kowalik M., Kierpiec-Baran B., Duda-Franiak K.

Acta Agrobotanica

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2015

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tom 68

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nr 2

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: Alternaria alternata, Aspergillus niger, Epicoccum nigrum, Humicola grisea, Pestalotiopsis sydowiana, Phoma pomorum, Sordaria fimicola, Trichoderma koningii, Trichoderma polysporum, Truncatella truncata, Umbelopsis isabellina 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.

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Micromycetes on ericaceous plant leaves

80%

Kowalik M., Bonio J., Duda-Franiak K.

Acta Mycologica

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2015

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tom 50

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nr 1

A two-year study was carried out on the ericaceous plant collection of the Botanic Garden of the Jagiellonian University in Cracow and the Rogów Arboretum of the Warsaw University of Life Sciences on the following plants: wild rosemary Ledum palustre L., leatherleaf Chamaedaphne calyculata (L.) Moench and American cranberry Oxycoccus macrocarpus (Ait.) Pursh. Diverse micromycetes species composition was specified on the leaves of tested ericaceous plants. The perpetrators of dying leaves were recognized, among which the dominant role was played by the necrotroph Pestalotiopsis sydowiana. Quantitative and qualitative comparative analyses of micromycetes in both locations were carried out, showing a comparable degree of plant colonization by these fungi in the botanic garden and arboretum. The study may be helpful in explaining the causes of dieback of protected and endangered plants in Polish flora.

Ograniczanie wyników

2 Acta Mycologica

1 Acta Agrobotanica

3 Duda-Franiak K.

3 Kowalik M.

1 Bonio J.

1 Kierpiec-Baran B.

3 2015

Micromycetes on climbing roses leaves (Rosa L.) in the Botanic Garden of the Jagiellonian University in Cracow

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

Micromycetes on ericaceous plant leaves