Abstract
The present study is deals with the influence of nanoparticles on the growth of heterocyst-forming cyanobacterium Anabaena ambigua Rao [A100]. The nano molybdenum and iron particles have been synthesized respectively from molybdenum trioxide (MoO3) and iron chloride (FeCl3) employing sodium borohydride (NaBH4) as a reducing agent and characterized comprehensively. BG11 (N−) media containing micronutrients like molybdenum and iron were replaced respectively by different concentrations of nano molybdenum [BG11 (N−Mo− + nano Mo)] (0, 5, 10, 15, 20, 25, 40, 60, 80, and 100%) and nano iron [BG11 (N−Fe− + nano Fe)] (0, 0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, 3, 4, 5, 10, 15, 20, 25, 40, 60, 80, and 100%) particles for the cultivation. The effect of nano nutrients on cyanobacterial growth parameters like heterocyst formation, chlorophyll content, and protein content was analyzed. The obtained results showed that the high concentrations of nano molybdenum induce heterocyst formation, increase protein content, and decrease chlorophyll content when compared to the control, whereas the nano iron suppresses the growth of cyanobacteria Anabaena ambigua Rao [A 100].
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