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  4. Diversity, specificity and evolutionary history of marine invertebrate symbioses and functions of the sulfur-oxidizing symbionts
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-00104625-14

Diversity, specificity and evolutionary history of marine invertebrate symbioses and functions of the sulfur-oxidizing symbionts

Veröffentlichungsdatum
2015-07-09
Autoren
Zimmermann, Judith  
Betreuer
Dubilier, Nicole  
Gutachter
Hoffmeister, Thomas  
Zusammenfassung
Many marine invertebrates have established symbioses with chemosynthetic bacteria that metabolize reduced sulfur compounds and provide nutrition to their host. Two key questions in the field of symbiosis are: (1) How specific and evolutionarily stable are these symbioses? Chapters II, III and IV of this thesis contribute to a more comprehensive understanding of this question by investigating the diversity, specificity and evolutionary history of three sulfur-oxidizing symbioses: deep-sea vestimentiferan tubeworm endosymbioses, shallow water gutless phallodriline oligochaete endo- and stilbonematine nematode ectosymbioses. The studies emphasize the power of molecular analyses to uncover "hidden" symbiont diversity and highlight the remarkably stable and specific stilbonematine ectosymbioses. (2) What are the benefits for the symbiotic partners? Chapter V strengthens the hypothesis of stilbonematine ectosymbionts' nutritional role for their host and the genomic study in Chapter VI discusses potential additional functions of the ectosymbionts for their nematode host.
Schlagwörter
Stilbonematinae

; 

epibiont

; 

thiotroph

; 

ectosymbiosis

; 

endosymbiosis

; 

Leptonemella

; 

Lamellibrachia

; 

sulfur-oxidizing bacteria

; 

CARD-FISH

; 

cospeciation

; 

phylogeny

; 

microautoradiography
Institution
Universität Bremen  
Fachbereich
Fachbereich 02: Biologie/Chemie (FB 02)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00104625-1.pdf

Size

27.75 MB

Format

Adobe PDF

Checksum

(MD5):d67011d84701578a90571a6162f22b3c

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