MORPHOLOGICAL IDENTITY AND POPULATION STRUCTURE OF HEMIBIOTROPHIC FUNGUS COLLETOTRICHUM COCCODES COLONIZING PEPPER PLANTS

Agnieszka Jamiołkowska

University of Life Sciences in Lublin, Poland

Barbara Skwaryło-Bednarz

University of Life Sciences in Lublin, Poland

Elżbieta Patkowska

University of Life Sciences in Lublin, Poland


Abstract

Colletotrichum coccodes (Wallr.) Hughes has been recognized as one of casual agents of anthracnose roots pepper in south-eastern Poland. During 2007–2012 the species was isolated from roots of sweet pepper (Capsicum annuum L.) cultivated in the field. The purpose of the study was morphological characterization and biotic activity of C. coccodes isolates. Five randomly chosen isolates from fungus population and one reference isolate obtained from Bank of Plant Pathogens and Investigation of their Biodiversity of IPP-NRI in Poznan in Poland were studied. The character of culture like growth rate, the colour of averse and reverse and the formation of morphological structures of the fungus such as acervuli, conidia, sclerotia were studied. Ultrastructural observations of morphological structures were made using light and scanning electron microscopy. Biotic activity of C. coccodes was conducted using the method of biotic series on PDA. Seven species of test fungi were used in the study: Alternaria alternata, Aureobasidium pullulans, Gibberella avenacea, G. intricans, Fusarium oxysporum, Penicillium aurantiogriseum, Trichoderma harzianum. The biotic activity test showed that C. coccodes is a weak competitor, and its development in the rhizosphere of sweet pepper may be limited by numerous antagonists.

Keywords:

Capsicum annuum, rhizosphere fungi, morphology, biotic activity

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Published
2019-08-27



Agnieszka Jamiołkowska 
University of Life Sciences in Lublin, Poland
Barbara Skwaryło-Bednarz 
University of Life Sciences in Lublin, Poland
Elżbieta Patkowska 
University of Life Sciences in Lublin, Poland



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