Elly Syafriani, Femi Riwany, Rahmi Kamelia, Istino Ferita, Fatchiyah Fatchiyah, Jamsari Jamsari
Anthracnose is a serious fungal disease for many horticultural crops which is attended by a significant decrease in crop yield. One of these disease-causing pathogens is Colletotrichum gloeosporioides. Synthetic fungicides are currently used by farmers to control this fungus. However, excessive application of synthetic fungicides has caused some negative impacts on human health and environment. Since it could be shown that some bacteria of the plant rhizosphere act as natural suppressors of fungal diseases, we screened 101 isolates of rhizobacteria and analysed their capability to control C. gloeosporioides in-vitro. One isolate designated as UBCR_12 showed high antagonistic activity. Further analysis of UBCR_12 indicated that this effect could be due to protease and chitinase activity. Using a sequencing-based approach we identified Serratia plymuthica to be the inhibitor of C. gloeosporioides. Our data support the idea that rhizobacteria can be used as natural alternatives to biocidal chemical compounds. In addition we showed that UBCR_12 is a promising candidate for controlling C. gloeosporioides. © 2010 RJPBCS.
Plant Breeding Department, Faculty of Agriculture, Andalas University, Padang, West Sumatra, Indonesia; Chemistry Department, Faculty of Mathematics and Science, Andalas University, Padang, West Sumatra, Indonesia; Biology Department, Faculty of Mathematics and Natural Science, Brawijaya University, Malang, Malang, Jl Veteran, East Java, 65145, Indonesia
