Journal
MICROORGANISMS
Volume 9, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms9071374
Keywords
microbiome; reef builder; 16S rRNA sequencing; algal; bacteria; interaction
Categories
Funding
- Israeli Ministry of Science, Technology and Space (MOST)
- Levi-Eshkol Fellowship from MOST
- Advanced School for Environmental Studies at the Hebrew University of Jerusalem
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The interaction between Neogoniolithon sp. and its associated bacteria significantly impacts the physiological performance of the algae. Results show substantial differences between aquarium and field communities, and varying bacterial populations between different sampling campaigns.
The development of coastal vermetid reefs and rocky shores depends on the activity of several reef builders, including red crustose coralline algae (CCA) such as Neogoniolithon sp. To initiate studies on the interaction between Neogoniolithon sp. and its associated bacteria, and their impact on the algae physiological performance, we characterized the bacterial community by 16S rRNA gene sequencing. These were extracted from the algal tissue and adjacent waters along two sampling campaigns (during winter and spring), in three study regions along a reef in the east Mediterranean Israeli coast and from laboratory-grown algae. The analysis revealed that aquaria and field communities differ substantially, suggesting that future research on Neogoniolithon sp. interaction with its microbiome must rest on aquaria that closely simulate coastal conditions. Some prokaryote classes found associated with the alga tissue were hardly detected or absent from surrounding water. Further, bacterial populations differed between sampling campaigns. One example is the presence of anaerobic bacteria and archaea families in one of the campaigns, correlating with the weaker turbulence in the spring season, probably leading to the development of local anoxic conditions. A better understanding of reef-building activity of CCA and their associated bacteria is necessary for assessment of their resilience to climate change and may support coastal preservation efforts.
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