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- Title
Physicochemical and microbial responses of Streptomyces natalensis HW-2 to fungal elicitor.
- Authors
Wang, Dahong; Wei, Lanlan; Zhang, Ying; Zhang, Mengjuan; Gu, Shaobin
- Abstract
The effects of fungal elicitor on the physicochemical and microbial responses of Streptomyces natalensis HW-2 were investigated. The results showed that the elicitor could decrease dry cell weight (DCW) by 17.7% and increase the utilization of glucose, while the curve of pH was not obviously altered. The elicitor enhanced the yield of natamycin from 1.33 to 2.49 g/L. The morphology of the colony and the mycelium treated with elicitor showed significant differences from that of control. The level of intracellular reactive oxygen species (ROS) increased to 333.8 ng/L, which was a twofold increase comparing with the control. The concentration of Ca reached 421.1 nmol/L, which increased by 32.8% after the addition of the elicitor. The activities of pyruvic carboxylase and phosphoenol pyruvate carboxylase were enhanced by 27.8 and 11.9%, respectively, while citrate synthase activity decreased by 23.1% in comparison with the control.
- Subjects
STREPTOMYCES; ELICITORS (Botany); NATAMYCIN; REACTIVE oxygen species; PYRUVATE carboxylase; PYRUVATE kinase; CITRATE synthase
- Publication
Applied Microbiology & Biotechnology, 2017, Vol 101, Issue 17, p6705
- ISSN
0175-7598
- Publication type
Article
- DOI
10.1007/s00253-017-8440-0