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| Sayavedra, Lizbeth; Kleiner, Manuel; Ponnudurai, Ruby; Wetzel, Silke; Pelletier, Eric; Barbe, Valerie; Satoh, Nori; Shoguchi, Eiichi; Fink, Dennis; Breusing, Corinna; Reusch, Thorsten B. H.; Rosenstiel, Philip; Schilhabel, Markus B.; Becher, Doerte; Schweder, Thomas; Markert, Stephanie; Dubilier, Nicole; Petersen, Jillian M.. |
| Bathymodiolus mussels live in symbiosis with intracellular sulfur-oxidizing (SOX) bacteria that provide them with nutrition. We sequenced the SOX symbiont genomes from two Bathymodiolus species. Comparison of these symbiont genomes with those of their closest relatives revealed that the symbionts have undergone genome rearrangements, and up to 35% of their genes may have been acquired by horizontal gene transfer. Many of the genes specific to the symbionts were homologs of virulence genes. We discovered an abundant and diverse array of genes similar to insecticidal toxins of nematode and aphid symbionts, and toxins of pathogens such as Yersinia and Vibrio. Transcriptomics and proteomics revealed that the SOX symbionts express the toxin-related genes (TRGs)... |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00382/49381/49802.pdf |
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| Petersen, Jillian M.; Kemper, Anna; Gruber-vodicka, Harald; Cardini, Ulisse; Van Der Geest, Matthijs; Kleiner, Manuel; Bulgheresi, Silvia; Mussmann, Marc; Herbold, Craig; Seah, Brandon K. B.; Antony, Chakkiath Paul; Liu, Dan; Belitz, Alexandra; Weber, Miriam. |
| Chemosynthetic symbioses are partnerships between invertebrate animals and chemosynthetic bacteria. The latter are the primary producers, providing most of the organic carbon needed for the animal host's nutrition. We sequenced genomes of the chemosynthetic symbionts from the lucinid bivalve Loripes lucinalis and the stilbonematid nematode Laxus oneistus. The symbionts of both host species encoded nitrogen fixation genes. This is remarkable as no marine chemosynthetic symbiont was previously known to be capable of nitrogen fixation. We detected nitrogenase expression by the symbionts of lucinid clams at the transcriptomic and proteomic level. Mean stable nitrogen isotope values of Loripes lucinalis were within the range expected for fixed atmospheric... |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00380/49100/74895.pdf |
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