Chromate reducing and plant growth promoting activities of psychrotrophic Rhodococcus erythropolis MtCC 7,905.
A psychrotrophic bacterial strain resistant to 300 mg l(-1) of Cr(6+) was isolated from metal contaminated soil samples from a site situated in the Indian Himalayan Region. Based on 16 S rRNA analysis the isolate showed maximum similarity to Rhodococcus erythropolis. Rhodococcus erythropolis MTCC 7,905 reduced substantial amounts of Cr(6+) to Cr(3+) at 10 degrees C and showed plant growth promotion. The isolate offer promise as inoculant to promote plant growth of pea (Pisum sativum) in the presence of toxic Cr(6+) concentration. To the best of our knowledge this is the first report on a psychrotrophic strain belonging to species R. erythropolis and its functional characterization to reduce Cr(6+ )and promote plant growth at low temperature.
Trivedi
Pankaj
P
Environmental Physiology and Biochemistry, G B Pant Institute of Himalayan Environment and Development, Kosi-Katarmal, Almora, India. p_trivedi29@yahoo.com
Pandey
Anita
A
Sa
Tongmin
T
D002857:Chromium / Q000378:metabolism* / Q000494:pharmacology; D003080:Cold Temperature; D007194:India; D018532:Pisum sativum / Q000254:growth & development* / Q000378:metabolism; D018515:Plant Leaves / Q000254:growth & development / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism; D018520:Plant Shoots / Q000254:growth & development / Q000378:metabolism; D012240:Rhodococcus / Q000145:classification / Q000187:drug effects / Q000302:isolation & purification / Q000502:physiology*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*
D012989:Soil Pollutants; D002857:Chromium