Occurrence of silicate solubilizing bacteria in rice ecosystem.

摘要

Silicate and phosphate solubilizing bacteria were enumerated from soils, tank sediments, water, agro-inputs (super and rock phosphates) and commodities of anthropogenic activities. Silicate solubilizers were lesser than the phosphate solubilizing bacteria in these materials. Three out of 17 isolates were authenticated by Gram and Spore staining and biochemical characteristics. The isolates were all Bacillus spp. The isolate of Bacillus sp. from granite crusher yard exhibited marked silicate solubilization under in vitro in both medium and liquid culture. The presence of silicate solubilizing bacteria in rice ecosystems might contribute to the silicate requirement of rice.