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. Author manuscript; available in PMC: 2020 Jun 15.
Published in final edited form as: Bioenergy Res. 2019 Mar 8;12:409–418. doi: 10.1007/s12155-019-09966-9

Fig. 1.

Fig. 1

Least fitting squares-based growth rates of Fremyella diplosiphon (a) wild type (Fd33) and (b) halotolerant (HSF33–2) in solution with 20, 100, or 200 nm-diameter gold nanoparticles (NPs) over a period of 9 (Fd33) or 11 (HSF33–2) days. Cells grown in absence of AuNPs served as control (C) and gold colloids alone were denoted as AuNP only (NP-). Bars represent average growth rates (± standard error) for three biological replicates of each treatment. Different letters above bars indicate significance among treatment means at each time point (p < 0.05).