Research output: Contribution to Journal/Magazine › Journal article
Research output: Contribution to Journal/Magazine › Journal article
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TY - JOUR
T1 - Invasion of rust (Puccinia poarum) pycnia and aecia on coltsfoot (Tussilago farfara) by secondary pathogens: death of host leaves.
AU - De Nooij, M. P.
AU - Paul, N. D.
PY - 1992
Y1 - 1992
N2 - Necrotrophic fungi were cultured after isolation from rust (Puccinia poarum) pustules on leaves of Tussilago farfara, collected in the field. Healthy and rusted (P. poarum) leaves of T. farfara were re-inoculated in a greenhouse with these potential secondary invaders and development of necrosis and death of leaves was determined. Alternaria alternata, Fusarium sp., Phoma exigua and Phoma glomerata caused formation of necrotic tissue and (non-systemic) death of leaves, whereas leaves inoculated with Cladosporium herbarum and Epicoccum nigrum were similar to leaves inoculated with sterile water. Greater necrosis developed when aecia rather than pycnia were inoculated and at both stages secondary damage increased with increasing pustule density. Comparison with other host-rust systems and aspects of biological weed control are discussed.
AB - Necrotrophic fungi were cultured after isolation from rust (Puccinia poarum) pustules on leaves of Tussilago farfara, collected in the field. Healthy and rusted (P. poarum) leaves of T. farfara were re-inoculated in a greenhouse with these potential secondary invaders and development of necrosis and death of leaves was determined. Alternaria alternata, Fusarium sp., Phoma exigua and Phoma glomerata caused formation of necrotic tissue and (non-systemic) death of leaves, whereas leaves inoculated with Cladosporium herbarum and Epicoccum nigrum were similar to leaves inoculated with sterile water. Greater necrosis developed when aecia rather than pycnia were inoculated and at both stages secondary damage increased with increasing pustule density. Comparison with other host-rust systems and aspects of biological weed control are discussed.
KW - Mortality
KW - Superinfection
KW - Floristic composition
KW - Medicinal plant
KW - Plant pathogen
KW - Basidiomycetes
KW - Fungi
KW - Thallophyta
KW - Compositae
KW - Dicotyledones
KW - Angiospermae
KW - Spermatophyta
M3 - Journal article
VL - 96
SP - 309
EP - 312
JO - Mycological Research
JF - Mycological Research
IS - 4
ER -