Keshawanand Tripathi

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The nitrogen fixing aquatic pteridophyte Azolla is used as biofertilizer for rice paddy. It is also used as poultry and cattle feed due to high protein content. However, its mass cultivation and exploitation is constrained due to the abiotic stress conditions it is exposed to. The system is interesting due to the presence of symbiotic nitrogen fixing(More)
Anabaena fertilissima is a filamentous freshwater N2-fixing cyanobacterium, isolated from a paddy field. Growth of the cyanobacterium was limited by the non-availability of inorganic phosphate (Pi) in the growth medium and was found to be directly related to the cellular P quota, which declined rapidly in Pi-deficient cells. To overcome Pi-deficiency, cells(More)
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