Towards sustainable bioplastic production using the photoautotrophic bacterium Rhodopseudomonas palustris TIE-1.

ABSTRACT: Bacterial synthesis of polyhydroxybutyrates (PHBs) is a potential approach for producing biodegradable plastics. This study assessed the ability of Rhodopseudomonas palustris TIE-1 to produce PHBs under various conditions. We focused on photoautotrophy using a poised electrode (photoelectroautotrophy) or ferrous iron (photoferroautotrophy) as electron donors. Growth conditions were tested with either ammonium chloride or dinitrogen gas as the nitrogen source. Although TIE-1's capacity to produce PHBs varied fairly under different conditions, photoelectroautotrophy and photoferroautotrophy showed the highest PHB electron yield and the highest specific PHB productivity, respectively. Gene expression analysis showed that there was no differential expression in PHB biosynthesis genes. This sug

SUBMITTER: Ranaivoarisoa TO 

PROVIDER: S-EPMC6791910 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature