Polyhydroxybutyrate, a biodegradable thermoplastic, produced in transgenic plants - PubMed (original) (raw)
Polyhydroxybutyrate, a biodegradable thermoplastic, produced in transgenic plants
Y Poirier et al. Science. 1992.
Abstract
Polyhydroxybutyrate (PHB), a high molecular weight polyester, is accumulated as a storage carbon in many species of bacteria and is a biodegradable thermoplastic. To produce PHB by genetic engineering in plants, genes from the bacterium Alcaligenes eutrophus that encoded the two enzymes required to convert acetoacetyl-coenzyme A to PHB were placed under transcriptional control of the cauliflower mosaic virus 35S promoter and introduced into Arabidopsis thaliana. Transgenic plant lines that contained both genes accumulated PHB as electron-lucent granules in the cytoplasm, nucleus, and vacuole; the size and appearance of these granules were similar to the PHB granules that accumulate in bacteria.
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