Abstract:
Giam Siak Kecil-Bukit Batu (GSK-BB) Biosphere Reserves is one of peatland area in Riau Province. Peatlands is characterized by its high content of organic matter, but has very low availability of macro elements, such as nitrogen, potassium, and micro elements, such as phosphorus. Phosphorus (P) is one of the important nutrients that play a role in the metabolism of soil and microbiological processes. In the soil, phosphor was found in the form of phosphate that couldn’t be utilized. One way to overcome this problem is to use phosphate-solubilizing bacteria (PSB). So far, there is no information about the ability of cellulolytic bacteria originated from GSK-BB Biosphere to dissolve phosphate. Therefore, it is necessary to study the potential cellulolytic bacteria in dissolving phosphate. Potential test was conducted using cellulolytic bacteria grown on pikovskaya. There were 57 isolates which is able to grow and forming a clear zone out of 61 cellulolytic isolates which were subcultured on pikovskaya media. The test showed that as many as 14 isolates (24,6%) have a high potential in dissolving phosphate. Based on the ratio of the diameter of clear zone and colony diameter, isolates K.2.2.10-2 showed the highest activity with a value ratio of 10,66.
