Abstract
Synechocystis species have been assessed for their capacity to produce IAA (Indole acetic acid) in the rhizosphere and water of a rice field. Temp, acid levels, treatment time, and multiple tryptophan proportions were analyzed to see how they affected growth and phytohormones content. Different temperatures and pH levels ranges were preferred by habitat-isolated strains for development and auxin production. The ideal pH and temperature for water isolate growth were 8 and 30°C, respectively, while for rhizospheric isolate growth, 7 and 25°C. Both strains produced the most auxin at pH 6 and 35°C. The production of auxin by both isolates was positively related to incubation and tryptophan quantity.
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