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Demograficzne skutki wystepowania pasozytniczego grzyba Epichloe typhina [Ascomycetes] w populacjach Puccinellia distans

100%

Lembicz M.

Fragmenta Floristica et Geobotanica. Series:Polonica

1996

tom 03

389-394

Modification of the life cycle and reproductivity of Puccinellia distans [Poaceae] under the effect of parasite fungus Epichloe typhina

100%

Lembicz M.

Fragmenta Floristica et Geobotanica

1996

tom 41

nr 2

The fungus Epichloe typhina in populations of a halophyte Puccinellia distans: salinity as a possible inhibitor of infection

80%

Lembicz M. , Olejniczak P.

Acta Societatis Botanicorum Poloniae

2009

tom 78

nr 1

81-86

Puccinellia distans is a non-agricultural halophytic grass that has become another host plant for Epichloe typhina, hitherto not reported from Poland. In 1992 we noticed the first symptoms of choke disease in a single population of P. distans in central Poland. Since then we have observed choke disease in 5 populations of P. distans only in man-made habitats. These habitats are strongly anthropogenically salinated but they exhibit the pattern of species composition characteristic of natural salines. In this paper we test the hypothesis that the level of salinity affects the infection of P. distans by the fungus E. typhina. Seven plots were established in the field and each plot was divided into 25 subplots. Within each plot the level of infection in a spring generation of shoots was negatively correlated with salinity (common regression within the plots, beta = -0.674, df = 117, p < 0.001). Negative correlation was also found in an autumn generation within the plots (beta = -0.682, df = 94, p < 0.001) after excluding plot P in which the frequency of infected individuals was the lowest and equal only to 0.05. The proportion of individuals infected by the endophytic stage of the fungus in the populations was assessed using diagnostic polymerase chain reaction. The greatest percentage (98.3%) of infected individuals was found in the population growing in the habitat of the lowest salinity. The high salinity reduces the chance of P. distans to become infected, but may promote the stroma formation of E. typhina twice in the season. Disease expression in autumn clearly represents a misadaptation which could be explained by the fact that the species interactions described here appeared relatively recently as a result of human activity. This hypothesis requires further experimental verification.

Występowanie pochewczaka pałkowatego traw (Epichloë typhina Pers./Tul.) na nasiennych plantacjach tymotki (Phleum pratense L.) i kupkówki (Dactylis glomerata L.) w zależności od warunków agrotechnicznych

80%

Zgorkiewicz A.

Prace Naukowe Instytutu Ochrony Roślin

1988

tom 30

nr 1-2

Man-made habitats - hotspots of evolutionary game between grass, fungus and fly

80%

Lembicz M. , Olejniczak P. , Olszanowski Z. , Gorzynska K. , Leuchtmann A.

Biodiversity: Research and Conservation

2009

tom 15