Genetic Engineering of to Increase Growth and Lipid Accumulation

Overview

Journal Front Microbiol

Specialty Microbiology

Date 2018 Apr 5

PMID 29616006

Citations 10

Authors

Jinjin Diao

Xinyu Song

Xiaoqing Zhang

Lei Chen

Weiwen Zhang

Affiliations

Soon will be listed here.

Abstract

In this study, we evaluated suitable selected markers and optimized transformation protocols to develop a new genetic transformation methodology for DHA-producing . Additionally, ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO), potentially involved in CO fixation under autotrophic conditions, was selected as the target for construction of a gene knockdown mutant. Our results show that the constructs were successfully inserted into the chromosome by homologous recombination. Comparative analysis showed that deletion of the RuBisCO gene promoted cell growth and increased the lipid content of under heterotrophic conditions compared with those of the wild-type. The liquid chromatography-mass spectrometry (LC-MS) based metabolomic analysis showed that the metabolites involved in energy metabolism were upregulated, suggesting that the deletion of the RuBisCO gene may contribute to the re-direction of more carbon or energy toward growth and lipid accumulation under heterotrophic conditions.

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