Bacterial Leaf Spot (BLS) is a serious bacterial disease of chilli (Capsicum spp.) caused by at l... more Bacterial Leaf Spot (BLS) is a serious bacterial disease of chilli (Capsicum spp.) caused by at least four different Xanthomonas biotypes: X. euvesicatoria pv. euvesicatoria, X. euvesicatoria pv. perforans, X. hortorum pv. gardneri, and X. vesicatoria. Symptoms include black lesions and yellow halos on the leaves and fruits, resulting in reports of up to 66% losses due to unsalable and damaged fruits. BLS pathogens are widely distributed in tropical and subtropical regions. Xanthomonas is able to survive in seeds and crop residues for short periods, leading to the infections in subsequent crops. The pathogen can be detected using several techniques, but largely via a combination of traditional and molecular approaches. Conventional detection is based on microscopic and culture observations, while a suite of Polymerase Chain Reaction (PCR) and Loop-Mediated Isothermal Amplification (LAMP) assays are available. Management of BLS is challenging due to the broad genetic diversity of the...
Journal of Microbial & Biochemical Technology, 2019
Petroleum is a complex mixture of hydrocarbons. No single species of microorganisms is able to de... more Petroleum is a complex mixture of hydrocarbons. No single species of microorganisms is able to degrade all components of the petroleum. Mutually beneficial interaction of microorganisms in the form of a consortium is required during the process of oil degradation. One form of mutually beneficial interaction between fungi and bacteria is biofilm formed by bacteria on fungal surface. The formation of bacterial biofilm on fungal surface was reported to increase the synergistic action of the two microorganisms in destroying certain complex compounds. This work was aimed to assess the capacity of hydrocarbon degrading-bacterial biofilm on the surface of hydrocarbon degrading-fungal surface to degrade hydrocarbons derived from drill cuttings. The hydrocarbon degrading-soil bacteria and fungi were isolated from different area in Yogyakarta, Indonesia after enrichment. The ability of bacteria to form biofilm on the surface of fungal hyphae was examined under light microscope with 1000x magn...
Small scale gold mining provides an important source of income for miners in rural communities wh... more Small scale gold mining provides an important source of income for miners in rural communities where economic alternatives are extremely limited. However, it releases mercury which damages the environment and poses risks to those in the nearby community. Phytoremediation is considered as a simple and cost-eff ective method for the cleanup of heavy metal from contaminated soil. Phytoremediation is a technology that uses plants to degrade, extract, contain, or immobilize contaminants from soil and water. In particular, phytoextraction is the uptake of contaminants by plant roots and translocation within the plants to shoots or leaves. Contaminants are then removed by harvesting the plants. The objective of this research is to examine the ability of sweet sorghum and its inoculation using chromium uptake enhancing rhizobacteria for phytoremediation of gold mine tailing. Two varieties of sweet sorghum were used in this experiment, i.e. FS501, and KCS105. The seed of the sweet sorghum wa...
Bacterial Leaf Spot (BLS) is a serious bacterial disease of chilli (Capsicum spp.) caused by at l... more Bacterial Leaf Spot (BLS) is a serious bacterial disease of chilli (Capsicum spp.) caused by at least four different Xanthomonas biotypes: X. euvesicatoria pv. euvesicatoria, X. euvesicatoria pv. perforans, X. hortorum pv. gardneri, and X. vesicatoria. Symptoms include black lesions and yellow halos on the leaves and fruits, resulting in reports of up to 66% losses due to unsalable and damaged fruits. BLS pathogens are widely distributed in tropical and subtropical regions. Xanthomonas is able to survive in seeds and crop residues for short periods, leading to the infections in subsequent crops. The pathogen can be detected using several techniques, but largely via a combination of traditional and molecular approaches. Conventional detection is based on microscopic and culture observations, while a suite of Polymerase Chain Reaction (PCR) and Loop-Mediated Isothermal Amplification (LAMP) assays are available. Management of BLS is challenging due to the broad genetic diversity of the...
Journal of Microbial & Biochemical Technology, 2019
Petroleum is a complex mixture of hydrocarbons. No single species of microorganisms is able to de... more Petroleum is a complex mixture of hydrocarbons. No single species of microorganisms is able to degrade all components of the petroleum. Mutually beneficial interaction of microorganisms in the form of a consortium is required during the process of oil degradation. One form of mutually beneficial interaction between fungi and bacteria is biofilm formed by bacteria on fungal surface. The formation of bacterial biofilm on fungal surface was reported to increase the synergistic action of the two microorganisms in destroying certain complex compounds. This work was aimed to assess the capacity of hydrocarbon degrading-bacterial biofilm on the surface of hydrocarbon degrading-fungal surface to degrade hydrocarbons derived from drill cuttings. The hydrocarbon degrading-soil bacteria and fungi were isolated from different area in Yogyakarta, Indonesia after enrichment. The ability of bacteria to form biofilm on the surface of fungal hyphae was examined under light microscope with 1000x magn...
Small scale gold mining provides an important source of income for miners in rural communities wh... more Small scale gold mining provides an important source of income for miners in rural communities where economic alternatives are extremely limited. However, it releases mercury which damages the environment and poses risks to those in the nearby community. Phytoremediation is considered as a simple and cost-eff ective method for the cleanup of heavy metal from contaminated soil. Phytoremediation is a technology that uses plants to degrade, extract, contain, or immobilize contaminants from soil and water. In particular, phytoextraction is the uptake of contaminants by plant roots and translocation within the plants to shoots or leaves. Contaminants are then removed by harvesting the plants. The objective of this research is to examine the ability of sweet sorghum and its inoculation using chromium uptake enhancing rhizobacteria for phytoremediation of gold mine tailing. Two varieties of sweet sorghum were used in this experiment, i.e. FS501, and KCS105. The seed of the sweet sorghum wa...
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