Open AccessHeavy‐ion mutagenesis significantly enhances enduracidin production by Streptomyces fungicidicus
Author(s) -
Liu Lu,
Hu Wei,
Li Wenjian,
Wang Shuyang,
Lu Dong,
Tian Xuejiao,
Mao Yanqin,
Liu Jing,
Chen Jihong
Publication year - 2019
Publication title -
engineering in life sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.547
H-Index - 57
eISSN - 1618-2863
pISSN - 1618-0240
DOI - 10.1002/elsc.201800109
Subject(s) - mutant , strain (injury) , mutagenesis , fermentation , yield (engineering) , streptomyces , chemistry , biology , biochemistry , genetics , materials science , bacteria , gene , metallurgy , anatomy
To improve fermentative production of enduracidin, heavy‐ion beams generated by the Heavy Ion Research Facility in Lanzhou (HIRFL), China, were employed for the first time to generate mutations in Streptomyces fungicidicus . Initial screening detected 44 positive mutants with larger inhibition zone, which were subsequently tested based on flask fermentation. Finally, 20 mutants showed 20% increase in enduracidin production, when compared with the original strain. Among them, enduracidin production by the three mutants (M13, M30, and M34) was significantly higher than that by the original strain. In particular, mutant M30 exhibited highest enduracidin production, which was 114% higher than that obtained with the original strain. Following culture optimization, the maximal enduracidin yield obtained by M30 reached 918.5 mg/L in 10 days, which was 34% higher than that noted in the control.