Skip to main content

Advertisement

Log in

Diversity and novelty of actinobacteria in Arctic marine sediments

  • Original Paper
  • Published:
Antonie van Leeuwenhoek Aims and scope Submit manuscript

Abstract

The actinobacterial diversity of Arctic marine sediments was investigated using culture-dependent and culture-independent approaches. A total of 152 strains were isolated from seven different media; 18 isolates were selected for phylogenetic analysis on the basis of their 16S rRNA gene sequences. Results showed that the 18 isolates belonged to a potential novel genus and 10 known genera including Actinotalea, Arthrobacter, Brachybacterium, Brevibacterium, Kocuria, Kytococcus, Microbacterium, Micrococcus, Mycobacterium, and Pseudonocardia. Subsequently, 172 rDNA clones were selected by restriction fragment length polymorphism analysis from 692 positive clones within four actinobacteria-specific 16S rDNA libraries of Arctic marine sediments, and then these 172 clones were sequenced. In total, 67 phylotypes were clustered in 11 known genera of actinobacteria including Agrococcus, Cellulomonas, Demequina, Iamia, Ilumatobacter, Janibacter, Kocuria, Microbacterium, Phycicoccus, Propionibacterium, and Pseudonocardia, along with other, unidentified actinobacterial clones. Based on the detection of a substantial number of uncultured phylotypes showing low BLAST identities (<95 %), this study confirms that Arctic marine environments harbour highly diverse actinobacterial communities, many of which appear to be novel, uncultured species.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2

Similar content being viewed by others

References

Download references

Acknowledgments

This work was supported by grants from the Scientific Research Foundation of Third Institute of Oceanography (2011002), COMRA program (No. DY125-15-R-01), National Natural Science Foundation of China (41206160) and China Polar Environment Investigation and Estimate Project (CHINARE2012-2015).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Gaiyun Zhang.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (DOCX 28 kb)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Zhang, G., Cao, T., Ying, J. et al. Diversity and novelty of actinobacteria in Arctic marine sediments. Antonie van Leeuwenhoek 105, 743–754 (2014). https://doi.org/10.1007/s10482-014-0130-7

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10482-014-0130-7

Keywords

Navigation