OCCURRENCE, HARMFULNEES AND MORPHOLOGICAL STRUCTURES OF Colletotrichum gloeosporioides (Penz.) Sacc. (TELEOMORPH: Glomerella cingulata (Stonem.) Spauld. et Schrenk)
2011
Zofia Machowicz-Stefaniak | Ewa Zalewska | Ewa Król
The occurrence of plant diseases is determined by the interaction of three factors – pathogen, susceptible host plant and environment. C. gloeosporioides is a polyphagous species occurring in different geographical regions of the world. The present work shows results from 10 years of studies concerning the occurrence C. gloeosporioides on various crops including herbs (spices) and medicinal plants in South-East Poland. The presence of the pathogen causing plant anthracnose was detected on the above-ground parts of angelica Archangelica officinalis Hoffm, thyme Thymus vulgaris L., caraway Carum carvi L. and elder Sambucus nigra L. However, the epidemic occurrence of this fungus was recorded on ornamental lupine plants in the years 1999–2001 as well as on angelica plants and elder umbels in 2010, i.e. during the vegetative periods with temperatures above 20oC and frequent rainfalls. In these conditions the intensive sporulation of pathogen during the necrotrophic phase of growth was the essential diagnostic factor. Mineral and malt extract culture media were convenient for the isolation of fungus while PDADifco medium for identification.
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