Lipid composition of deep-sea hydrothermal vent tubeworm Riftia pachyptila, crabs Munidopsis subsquamosa and Bythograea thermydron, mussels Bathymodiolus sp. and limpets Lepetodrilus spp.

2005 ◽  
Vol 141 (2) ◽  
pp. 196-210 ◽  
Author(s):  
Charles F. Phleger ◽  
Matthew M. Nelson ◽  
Ami K. Groce ◽  
S. Craig Cary ◽  
Kathryn J. Coyne ◽  
...  
Keyword(s):  
Lipid Composition ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Riftia Pachyptila ◽  
Bythograea Thermydron

scholarly journals Bacterial symbiont subpopulations have different roles in a deep-sea symbiosis

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Tjorven Hinzke ◽  
Manuel Kleiner ◽  
Mareike Meister ◽  
Rabea Schlüter ◽  
Christian Hentschker ◽  
...  
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Carbon Fixation ◽  
Density Gradient Centrifugation ◽  
Gradient Centrifugation ◽  
Bacterial Symbiont ◽  
Riftia Pachyptila ◽  
Physiological Diversity ◽  
Host Interaction ◽  
Sulfur Oxidizing

The hydrothermal vent tubeworm Riftia pachyptila hosts a single 16S rRNA phylotype of intracellular sulfur-oxidizing symbionts, which vary considerably in cell morphology and exhibit a remarkable degree of physiological diversity and redundancy, even in the same host. To elucidate whether multiple metabolic routes are employed in the same cells or rather in distinct symbiont subpopulations, we enriched symbionts according to cell size by density gradient centrifugation. Metaproteomic analysis, microscopy, and flow cytometry strongly suggest that Riftia symbiont cells of different sizes represent metabolically dissimilar stages of a physiological differentiation process: While small symbionts actively divide and may establish cellular symbiont-host interaction, large symbionts apparently do not divide, but still replicate DNA, leading to DNA endoreduplication. Moreover, in large symbionts, carbon fixation and biomass production seem to be metabolic priorities. We propose that this division of labor between smaller and larger symbionts benefits the productivity of the symbiosis as a whole.

scholarly journals Cloning and Sequencing of a Form II Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase from the Bacterial Symbiont of the Hydrothermal Vent Tubeworm Riftia pachyptila

1998 ◽  
Vol 180 (6) ◽  
pp. 1596-1599 ◽  
Author(s):  
Jonathan J. Robinson ◽  
Jeffrey L. Stein ◽  
Colleen M. Cavanaugh
Keyword(s):  
Amino Acid ◽  
Active Site ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Rhodospirillum Rubrum ◽  
Bacterial Symbiont ◽  
Active Site Residues ◽  
Riftia Pachyptila ◽  
Cloning And Sequencing ◽  
Bisphosphate Carboxylase

ABSTRACT The bacterial symbiont of the hydrothermal vent tubeworm fixes carbon via the Calvin-Benson cycle and has been shown previously to express a form II ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO). The gene cbbM, which encodes this enzyme, has been cloned and sequenced. The gene has the highest identity with thecbbM gene from Rhodospirillum rubrum, and analysis of the inferred amino acid sequence reveals that all active-site residues are conserved. This is the first form II RubisCO cloned and sequenced from a chemoautotrophic symbiont and from a deep-sea organism.

Evolution of the Sulfide-Binding Function Within the Globin Multigenic Family of the Deep-Sea Hydrothermal Vent Tubeworm Riftia pachyptila

2002 ◽  
Vol 19 (9) ◽  
pp. 1421-1433 ◽  
Author(s):  
Xavier Bailly ◽  
Didier Jollivet ◽  
Stephano Vanin ◽  
Jean Deutsch ◽  
Franck Zal ◽  
...  
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Riftia Pachyptila ◽  
Binding Function ◽  
Multigenic Family

A Discrete Helicoid of Collagenous Fibrils: The Cuticle of Deep-Sea Hydrothermal Vent Worms (Riftia pachyptila)

Matrix ◽  
1991 ◽  
Vol 11 (3) ◽  
pp. 197-205 ◽  
Author(s):  
Francoise Gaill ◽  
Daniel Herbage ◽  
Lien Lepescheux
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Riftia Pachyptila

scholarly journals Rate and process of tube production by the deep-sea hydrothermal vent tubeworm Riftia pachyptila

1997 ◽  
Vol 148 ◽  
pp. 135-143 ◽  
Author(s):  
F Gaill ◽  
B Shillito ◽  
F Ménard ◽  
G Goffinet ◽  
JJ Childress
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Tube Production ◽  
Riftia Pachyptila
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