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UV-ARTP-DES compound mutagenesis breeding improves natamycin production of Streptomyces natalensis HW-2 and reveals transcriptional changes by RNA-seq.

ABSTRACT: Natamycin is widely used in food, medical and health, agriculture, and animal husbandry. In this study, Streptomyces natalensis HW-2 was used as the research object, and a mutant DES-26 with stable genetic characters was selected by UV-ARTP-DES compound mutation. The natamycin yield was 1.64 g/L, 86.36% higher than original strain. Differential expression genes were analyzed by transcriptomics, and results showed that 295 and 860 genes were significantly differentially expressed at fermentation for 48 h and 72 h. GO and KEGG analysis showed that compound mutagenesis had a significant impact on glycolysis, pentose phosphate, TCA cycle, fatty acid metabolism pathways, and several key enzyme genes in the pathways were up-regulated, and genes related to natamycin biosynthesis (pimB-pimI) and transcriptional regulator (pimR) were also up-regulated. qRT-PCR results confirmed that expression levels of these genes were consistent with transcriptional changes of RNA-Seq.

Supplementary information

The online version contains supplementary material available at 10.1007/s10068-022-01191-z.

SUBMITTER: Sun J

PROVIDER: S-EPMC9905406 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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UV-ARTP-DES compound mutagenesis breeding improves natamycin production of <i>Streptomyces natalensis</i> HW-2 and reveals transcriptional changes by RNA-seq.

Sun Jianrui J Li Jinglan J Yao Linlin L Zheng Yingying Y Yuan Jiangfeng J Wang Dahong D

Food science and biotechnology 20221031 3

Natamycin is widely used in food, medical and health, agriculture, and animal husbandry. In this study, <i>Streptomyces natalensis</i> HW-2 was used as the research object, and a mutant DES-26 with stable genetic characters was selected by UV-ARTP-DES compound mutation. The natamycin yield was 1.64 g/L, 86.36% higher than original strain. Differential expression genes were analyzed by transcriptomics, and results showed that 295 and 860 genes were significantly differentially expressed at fermen ...[more]

PMID: 36778090

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