Effect of different stresses on trehalose levels in Rhizopus oryzae

Date

2010-08-01

Author

Uyar, Ebru Ozer
Hamamcı, Haluk
TÜRKEL, SEZAİ

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Rhizopus oryzae accumulates and degrades trehalose in response to environmental stress conditions such as heat, osmotic stress, nitrogen starvation and pH. When heat stress was applied to R. oryzae, the trehalose content of the cells was increased from 0.9 to 4.8 mg/g dw and when the stress was relieved it decreased back to 1.1 mg/g dw. Under osmotic stress and nitrogen starvation, trehalose content was increased by 3.5 and 3 fold, respectively. The decrease in external pH increased trehalose level up to 2.6 mg/g dw from 1.1 mg/g dw. Increased trehalose level decreased back to normal after pH stress was relieved. These results indicate that trehalose accumulates and acts as a stress protectant in R. oryzae.

Subject Keywords

Rhizopus oryzae, Trehalose, Stress response, Filamentous fungi

URI

https://hdl.handle.net/11511/30140

Journal

JOURNAL OF BASIC MICROBIOLOGY

DOI

https://doi.org/10.1002/jobm.200900339

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

E. O. Uyar, H. Hamamcı, and S. TÜRKEL, “Effect of different stresses on trehalose levels in Rhizopus oryzae,” JOURNAL OF BASIC MICROBIOLOGY, pp. 368–372, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30140.