Impact of graded concentration of NaCl on growth, Heterocyst differentiation and macromolecular content of Diazotrophic Cyanobacterium Anabaena variabilis [wild type and Multiple Herbicide Resistant strain(MHR)]
Nandita Singh* and Surendra Singh1
*Chhattisgarh Environment conservation Board Raipur (India) 1Deptartment of Biological Sciences Rani Durgavati University Jabalpur, (India)
ABSTRACT
Salinity and alkalinity are the major problem of soil which greatly affects the fertility, and the ability of cyanobacteria to tolerate a wide range of adverse environmental conditions including salinity, makes them a good alternative of chemical fertilizers. So in this background and context an effort was made to evaluate the potential of two diazotrophic cyanobacterial strains Anabaena variabilis ,a rice field isolate and its multiple herbicide resistant mutant A.variabilis (MHR) Ar,Al,B,D exhibiting resistant to herbicide arozin, alachlor, butachlor and 2,4-D under graded concentration of NaCl to generate the knowledge about their mechanisms of actions and tolerance level towards salt(ionic and osmotic stress).