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Abstract. The cacao bean harvest from the relatively under developed tropical tree cacao (Theobroma cacao L.) is subject to high losses in potential production due to pests and diseases. To discover and understand the stability of putative natural resistance mechanisms in this commodity crop, essential for chocolate production, we undertook a gene-discovery program and demonstrated its use in gene-expression...
Generation of superoxide anion (O2) and peroxidase activity were significantly increased in bean leaves infected with incompatible and compatible pathogens: Botrytis fabae and Botrytis cinerea, respectively, but the induction was greater on direct inoculation with B. fabae, than with B. cinerea. A slightly higher O2 level was also detected in the parts of leaves surrounding the inoculation side. Overproduction...
The activity of ß-1,3-glucanase and chitinase in bean plants treated with B. cinerea products or/and infected and in cell cultures after application of fungal products has been studied. Botrytis cinerea infection and culture filtrates, ethanol precipitates, glucan and conidial extract treatment markedly enhanced the activity of both hydrolases. Cell cultures treated with B. cinerea products reacted...
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