112816JF799F-mapping2.txt

Mapping file - see accompanying github repo: https://github.com/nitschkematthew/Symbiodinium-bacteria-interactions<br>Microbially induced calcification plays an important role in biogeochemical cycles and produces different types of microbialites. Symbiolites are photosynthesis-induced microbialites, formed by co-cultures of dinoflagellates from the family Symbiodiniaceae and bacteria. Symbiolites encase the calcifying community as endolithic cells, pointing at an autoendolithic niche of symbiotic dinoflagellates, and provide a rare opportunity to study the role of bacteria in bacterial-algal calcification, as symbiodiniacean cultures display distinct symbiolite-producing or non-symbiolite-producing phenotypes. Using Illumina-sequencing, we characterised the bacterial communities of symbiolite-producing and non-symbiolite-producing cultures. We anticipate that symbiolite formation, as a low-complexity calcifying in vitro model, will significantly advance our understanding of bacteria in photosynthesis-induced calcification.