Environmental Engineering Reference
Table 5 Growth response versus as remov al by KUMAs1 under aerobic culture condition
Growth and As removal
a Growth responses are presented as log number of CFU/ml
All the treatment regimes were inoculated with same inoculum load as stated
It appears that strain KUMAs1 is effective in removing As under aerobic conditions,
though it showed As(V) reducing ability. Furthermore, this activity is maintained
even at low concentrations of As. Based on the present study, it seems that KUMAs1
could be used as potential As bioremediating candidate. Being an indigenous iso-
late, KUMAs1 might be assumed to have better rhizosphere colonizing ability in the
paddy fi eld; additional feature of this isolate makes it important that it could pro-
duce IAA, thus it might be used as biofertilizer candidate as well. Though, its effi -
ciency under environmental condition conducive for decontamination of arsenic
requires further investigation.
Acknowledgements This work was supported by the fi nancial grants received from DST, Govt.
of India under INSPIRE Programme and DBT, Govt. of India.
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