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Article Details :: |
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| Article Name : | | | INTERGENERIC MICROBIAL CO-FLOCS: POSITIVE ROLE OF BIOTIC AND ABIOTIC FACTORS ON THE ENHANCEMENT OF CO-FLOCCULATION BETWEEN PGPR CELLS | | Author Name : | | | Mahendran. R , Sekar. C | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | ISRJ-341 | | Article URL : | |  | Author Profile | | Abstract : | | | The positive effect of certain biotic and abiotic factors viz., Inoculum level and growth phase, cultural condition, pH, presence of divalent cations and chelating agents on the enhancement of co-flocculation between PGPR cells viz.,
Pseudomonas fluorescens (PF-5) and Paenibacillus polymyxa (PB-5) was studied under in vitro condition.
It was observed that 107:107 inoculum level and stationary growth phase of PGPR partners were found to be optimum for maximising the coflocculation. The cells of PGPR partners harvested from N-deficient medium recorded more co-flocculation when compared to PGPR cells harvested from N-rich medium. Further, The PGPR cells cultured at 350c and
at pH level of 7.5 recorded higher co-flocculation percentage than other levels. Moreover, the addition of Ca2+, as divalent cations, augmented higher co-flocculation percentage of PGPR cells while the addition of EDTA, as chelating agent, reduced the stability of PGPR coflocs, significantly. | | Keywords : | | - pgpr
- biotic and abiotic factors
- coflocculation
- divalent cations
- chelating agents
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