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In this study Cephaleuros virescens was found to be the causal organism of a leaf spot disease on Para rubber (Hevea brasiliensis). The algae caused circular orange to dark brown lesions on both leaf surfaces. The morphology of the algae (thallus, filamentous cells, sporangiophore, sporangia, gametangia and zoospore) were examined and found to consistently match the species Cephaleuros virescens.
The objective of this study was to screen Streptomyces spp. for biological control of root and stem rot (Sclerotium rolfsii) and bacterial wilt (Ralstonia solanacearum), the very destructive diseases of chili pepper in Thailand. About 265 isolates of Streptomyces spp. were tested for their inhibitory effects on S. rolfsii mycelial growth on dual culture plates. Then, 14 promising isolates were further...
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