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Generation of active oxygen species in yew shoot blight of Taxus baccata L. caused by Pestalotiopsis funerea desm

100%

Rybus-Zajac M., Mietkiewicz M.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

2

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Shoot blight of Vinca minor L. caused by Phoma exigua Desm. var. inoxydabilis Boerema et Vegh var. Nov.

72%

Orlikowski L. B.

Journal of Plant Protection Research

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2001

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tom 41

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nr 2

Phoma exigua var. inoxydabilis var. nov. predominated among fungal isolates obtained from diseased stem runners and leaves of periwinkle (Vinca minor). The growth of the fungus was observed at temperaturę ranges from 7.5 to 30°C with optimum at 25°C. Abundant formation of picnidia was noticed mainly on malt extract agar at temp. 15-25°C. On potato-dextrose agar picnidia were observed 3-5 days later. On inoculated leaves of periwinkle, development of necrosis was observed at temperature 10-25°C with optimum 20°C. On field grown periwinkle the first necrosis on the base of stem runners was observed 2 weeks after inoculation and during the next 10 weeks discoloration of tissues occurred on about 1/2 of their length.

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Genetic polymorphism of Polish strains of Gremmeniella abietina and Brunchorstia pinea var. cembrae

51%

Kraj W.

Dendrobiology

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2009

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tom 61

13-21

Thirty-three type A strains of G. abietina from diseased shoots or needles of P. sylvestris, P. nigra and P. armandii and three strains of Brunchorstia pinea var. cembrae from P. mugo were isolated from four regions of Poland differing with respect to climatic conditions. Genetic polymorphism of the mitochondrial small subunit rRNA (mtSSU rRNA), ribosomal RNA fragment including ITS1, 5.8S and ITS2 and glyceraldehyde phosphate dehydrogenase (GPD) gene was examined by the PCR-RFLP method. Genetic distance was ascertained with respect to B. pinea var. cembrae strains from G. abietina isolated from the examinedpine species (average Nei coefficient 0.137). The smallest genetic distance occurred between the strain groups of G. abietina isolated from P. nigra and P. armandii (0.059) and P. nigra and P. sylvestris (0.061), whereas the highest occurred between the groups of strains deriving from P. armandii and P. sylvestris (0.096). The impact of geographic distance on genetic distance between groups of strains from individual regions has been shown. G. abietina strains originating from mountainous areas were more distanced genetically (on average 0.031) from populations from other regions (Nei genetic distance 0.023). The main factors influencing genetic differences of the pathogen were specificity with respect to the species of the host plant and climate conditions, whereas geographic distance had lesser significance.

Ograniczanie wyników

1 Dendrobiology

1 Journal of Plant Protection Research

1 Polish Journal of Natural Sciences. Supplement

1 Kraj W.

1 Mietkiewicz M.

1 Orlikowski L. B.

1 Rybus-Zajac M.

1 2009

1 2003

1 2001

Generation of active oxygen species in yew shoot blight of Taxus baccata L. caused by Pestalotiopsis funerea desm

Shoot blight of Vinca minor L. caused by Phoma exigua Desm. var. inoxydabilis Boerema et Vegh var. Nov.

Genetic polymorphism of Polish strains of Gremmeniella abietina and Brunchorstia pinea var. cembrae