Tags

Type your tag names separated by a space and hit enter

Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities from the Rocky Intertidal Seaweeds, South Africa.
Sci Rep. 2019 12 27; 9(1):19835.SR

Abstract

Interrelations between epiphytic bacteria and macroalgae are multifaceted and complicated, though little is known about the community structure, interaction and functions of those epiphytic bacteria. This study comprehensively characterized the epiphytic bacterial communities associated with eight different common seaweeds collected from a rocky intertidal zone on the Indian Ocean at Cape Vidal, South Africa. High-throughput sequencing analyses indicated that seaweed-associated bacterial communities were dominated by the phyla Proteobacteria, Bacteroidetes, Firmicutes, Cyanobacteria, Planctomycetes, Actinobacteria and Verrucomicrobia. Energy-dispersive X-ray (EDX) analysis showed the presence of elemental composition in the surface of examined seaweeds, in varying concentrations. Cluster analysis showed that bacterial communities of brown seaweeds (SW2 and SW4) were closely resembled those of green seaweeds (SW1) and red seaweeds (SW7) while those of brown seaweeds formed a separate branch. Predicted functional capabilities of epiphytic bacteria using PICRUSt analysis revealed abundance of genes related to metabolic and biosynthetic activities. Further important identified functional interactions included genes for bacterial chemotaxis, which could be responsible for the observed association and network of elemental-microbes interaction. The study concludes that the diversity of epiphytic bacteria on seaweed surfaces is greatly influenced by algal organic exudates as well as elemental deposits on their surfaces, which triggers chemotaxis responses from epiphytic bacteria with the requisite genes to metabolise those substrates.

Links

PMC Free PDF

Authors+Show Affiliations

Selvarajan R
Department of Environmental Sciences, College of Agricultural and Environmental Sciences, UNISA, Johannesburg, South Africa. ramganesh.presidency@gmail.com.
Sibanda T
Department of Biological Sciences, University of Namibia, Mandume Ndemufayo Ave, Pionierspark, Windhoek, Namibia.
Venkatachalam S
Arctic Division, National Centre for Polar and Ocean Research, Vasco-da-Gama, Goa, India.
Ogola HJO
Department of Environmental Sciences, College of Agricultural and Environmental Sciences, UNISA, Johannesburg, South Africa. Centre for Research, Innovation and Technology, Jaramogi Oginga Odinga University of Science and Technology, Bondo, Kenya.
Christopher Obieze C
Department of Microbiology, University of Port Harcourt, Port Harcourt, Nigeria.
Msagati TA
Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa-Science Campus, Florida, South Africa.

MeSH

ActinobacteriaBacteriaBiodiversityEcosystemFirmicutesGenetic VariationHigh-Throughput Nucleotide SequencingHost Microbial InteractionsIndian OceanPhylogenyProteobacteriaSeaweedSouth AfricaVerrucomicrobia

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31882618

Citation

Selvarajan, Ramganesh, et al. "Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities From the Rocky Intertidal Seaweeds, South Africa." Scientific Reports, vol. 9, no. 1, 2019, p. 19835.
Selvarajan R, Sibanda T, Venkatachalam S, et al. Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities from the Rocky Intertidal Seaweeds, South Africa. Sci Rep. 2019;9(1):19835.
Selvarajan, R., Sibanda, T., Venkatachalam, S., Ogola, H. J. O., Christopher Obieze, C., & Msagati, T. A. (2019). Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities from the Rocky Intertidal Seaweeds, South Africa. Scientific Reports, 9(1), 19835. https://doi.org/10.1038/s41598-019-56269-2
Selvarajan R, et al. Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities From the Rocky Intertidal Seaweeds, South Africa. Sci Rep. 2019 12 27;9(1):19835. PubMed PMID: 31882618.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Distribution, Interaction and Functional Profiles of Epiphytic Bacterial Communities from the Rocky Intertidal Seaweeds, South Africa. AU - Selvarajan,Ramganesh, AU - Sibanda,Timothy, AU - Venkatachalam,Siddarthan, AU - Ogola,Henry J O, AU - Christopher Obieze,Chinedu, AU - Msagati,Titus A, Y1 - 2019/12/27/ PY - 2019/07/22/received PY - 2019/12/05/accepted PY - 2019/12/29/entrez PY - 2019/12/29/pubmed PY - 2020/11/18/medline SP - 19835 EP - 19835 JF - Scientific reports JO - Sci Rep VL - 9 IS - 1 N2 - Interrelations between epiphytic bacteria and macroalgae are multifaceted and complicated, though little is known about the community structure, interaction and functions of those epiphytic bacteria. This study comprehensively characterized the epiphytic bacterial communities associated with eight different common seaweeds collected from a rocky intertidal zone on the Indian Ocean at Cape Vidal, South Africa. High-throughput sequencing analyses indicated that seaweed-associated bacterial communities were dominated by the phyla Proteobacteria, Bacteroidetes, Firmicutes, Cyanobacteria, Planctomycetes, Actinobacteria and Verrucomicrobia. Energy-dispersive X-ray (EDX) analysis showed the presence of elemental composition in the surface of examined seaweeds, in varying concentrations. Cluster analysis showed that bacterial communities of brown seaweeds (SW2 and SW4) were closely resembled those of green seaweeds (SW1) and red seaweeds (SW7) while those of brown seaweeds formed a separate branch. Predicted functional capabilities of epiphytic bacteria using PICRUSt analysis revealed abundance of genes related to metabolic and biosynthetic activities. Further important identified functional interactions included genes for bacterial chemotaxis, which could be responsible for the observed association and network of elemental-microbes interaction. The study concludes that the diversity of epiphytic bacteria on seaweed surfaces is greatly influenced by algal organic exudates as well as elemental deposits on their surfaces, which triggers chemotaxis responses from epiphytic bacteria with the requisite genes to metabolise those substrates. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/31882618/Distribution_Interaction_and_Functional_Profiles_of_Epiphytic_Bacterial_Communities_from_the_Rocky_Intertidal_Seaweeds_South_Africa_ DB - PRIME DP - Unbound Medicine ER -