Volume: 1, 2022
1st International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: P012
DOI: https://doi.org/10.24326/ICDSUPL1.P012
Published online: 26 April 2022
ICDSUPL, 1, P012 (2022)
Characteristics of Colletotrichum coccodes (Wallr.) S. Hughes isolates as a major factor of anthracnose of cultivated plants
Weronika Kursa1* and Agnieszka Jamiołkowska1
1Department of Plant Protection, University of Life Sciences in Lublin, 7 K. St. Leszczyńskiego Street, 20-068 Lublin, Poland
* Corresponding author: weronika.kursa@up.lublin.pl
Abstract
Fungi are important group of plant pathogens, because they are the only organisms that can degrade and colonize the plant cells due to the enzymes they produce. Fungi of the genus Colletotrichum are the most important pathogenic fungi causing plant anthracnose. The disease occurs in all stages of the plant’s development and on all organs (stems, leaves, fruits, flowers and roots). Symptoms of these diseases are spots, necrosis or blackening of the fruit, usually after harvest. The basis for control disease is to know and understand the conditions and mechanisms of pathogen development. The aim of the study was to assess the growth rate of selected isolates of Colletotrichum coccodes on various substrates and at the different temperature conditions to determine the most optimal conditions for the development of this pathogen. The study of biotic series was aimed at determining the antagonistic abilities of C. coccodes against other species of fungi occurring in the same communities. The research included the assessment of the growth rate of selected Colletotrichum coccodes isolates on various microbiological media (PDA, MEA, CMA, CD) as well as the effect of different temperatures (-10°C, 0°C, 5°C, 10°C, 15°C, 20°C, 25°C and 30°C) on growth and sporulation of fungus colony. The conducted research served to determine the most optimal conditions for the development of C. coccodes as an important pathogen of many crops. Research has shown that C. coccodes grows well at the high temperature (most optimal 25°C), while negative temperature (-10°C) inhibits its growth and development. C. coccodes colonies grow fastest on potato-dextrose agar (PDA), where they sporulate poorly, while they grow the slowest on the Czapek-Dox substrate, where their sporulation is abundant. The study of biotic series showed that C. coccodes is a species with weak antagonistic abilities, because its growth in vitro conditions was limited by Botrytis cinerea, Alternaria alternata, Penicillium cyclopium, Trichoderma harzianum and fungi of the genus Fusarium.
How to cite
W. Kursa, A. Jamiołkowska, 2022. Characteristics of Colletotrichum coccodes (Wallr.) S. Hughes isolates as a major factor of anthracnose of cultivated plants. In: 1st International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL1/P012