Isolation, identification and antagonistic activity evaluation of actinomycetes in barks of nine trees

Authors

  • Dong-sheng Wang College of Life Science, Shanxi Normal University, Linfen, Shanxi
  • Hai-ke Ren College of Life Science, Shanxi Normal University, Linfen, Shanxi
  • Erihemu Erihemu College of Food Science, Shanxi Normal University, Linfen, Shanxi
  • Zhi-yi Zheng Huaihai Industrial Group Co. Ltd., Changzhi, Shanxi

Keywords:

antagonistic potentiality, bioactive compound, Gause’s synthetic agar, modified humid acid agar, Qin Mountain

Abstract

Actinomycetes are important producers of novel bioactive compounds. New sources need to be explored for isolating previously unknown bioactive compound-producing actinomycetes. Here we evaluated the potential of bark as a natural source of novel bioactive actinomycete species. Bark samples were collected from nine tree species at different elevations (1600-3400 m a.s.l.) on Qin Mountain, Shaanxi Province, China. Actinomycetes were cultivated, enumerated and isolated using serial dilution and spread-plate techniques. The antimicrobial activity of actinomycete isolates was analyzed using an agar block method against 15 typical bacterial and fungal species and plant pathogens. The dominant isolates were identified by 16S rRNA-based sequence analysis. Results showed that actinomycete counts in bark samples of Quercus liaotungensis Koidz. was the highest among all trees species tested. The numbers of actinomycete species in bark samples were highest in Q. aliena var. acutiserrata and Spiraea alpina Pall. Antagonistic activity was detected in approximately 54% of the actinomycete isolates. Of these, 20 isolates (25%) showed broad-spectrum antagonistic activity against ≥5 of the microorganisms tested. In conclusion, the bark on coniferous and broadleaf trees possesses a high diversity of actinomycetes and serves as a natural source of bioactive compound-producing actinomycetes.

https://doi.org/10.2298/ABS160429109W

Received: April 29, 2016; Revised: May 30, 2016; Accepted: June 3, 2016; Published online: November 4, 2016

How to cite this article: Wang D, Ren H, Erihemu, Zheng Z. Isolation, identification and antagonistic activity evaluation of actinomycetes in barks of nine trees. Arch Biol Sci. 2017;69(2):345-51.

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Author Biographies

Dong-sheng Wang, College of Life Science, Shanxi Normal University, Linfen, Shanxi

College of life science

Modern College of Arts and Sciences

Doctor

Hai-ke Ren, College of Life Science, Shanxi Normal University, Linfen, Shanxi

Library

Modern College of Arts and Sciences

Master

Erihemu Erihemu, College of Food Science, Shanxi Normal University, Linfen, Shanxi

Modern College of Arts and Sciences

Doctor

Zhi-yi Zheng, Huaihai Industrial Group Co. Ltd., Changzhi, Shanxi

Bachelor

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Published

2017-05-25

How to Cite

1.
Wang D- sheng, Ren H- ke, Erihemu E, Zheng Z- yi. Isolation, identification and antagonistic activity evaluation of actinomycetes in barks of nine trees. Arch Biol Sci [Internet]. 2017May25 [cited 2022Aug.9];69(2):345-51. Available from: https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/505

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