ISOLATION OF PHOTOSYNTHETIC SULFUR BACTERIA FROM THE SOIL SAMPLES OF ELEVATED CO₂ CHAMBERS

摘要

Soils. are. the. largest. carbon. reservoir. of. the. terrestrial. carbon. cycle.. As. the. atmospheric. CO2. concentration. rises,. it. is. likely. that. microbial.populations. will. change,. as. some.bacterial. strains. may.be.favored.over.others..Soil.samples.were.obtained.from.OTCs.(open.top.chambers). and.inoculated.into.selective.enrichment.media.for.isolation.of.anoxygenic.photosynthetic. bacteria..OTCs.specially.erected. for.cli mate. change.studies.and.are. maintained. at. two.elevated. levels.of. carbon. dioxide.(550ppm.and.700ppm)..The.chambers.without.any.external.CO2.supply.served.as.ambient. (370ppm). control.. Several. photosynthetic. bacteria. have. been. isolated. at. 700ppm. of. CO2.concentration.whereas.these.photosynthetic.bacteria.were.absent.in.ambient.condition..Naturally.adapted.mi croorganisms.may.prove.to.be.more.suitable.for.climate.change.studies.and.the.aim.of.the.present.work.is.to.record.the.role.of.these.bacteria.in.agriculture.with.reference.to.elevated.atmospheric.CO2.conditions