The hydrogen hypothesis for the first eukaryote
Article Abstract:
A theory for the origins of eukaryotic cells has been developed around the symbiotic relationship of an anaerobic hydrogen dependant host archaebacterium and a symbiont eubacterium that generated waste hydrogen. Similar anaerobic relationships can be seen in deep sea sediments. The suggested mechanism is of a host existing in an anaerobic environment suddenly being removed from that environment and becoming totally dependant on the symbiont for survival. Hydrogen dependancy in the host is driven by the mechanism that generates ATP.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Mediation of pathogen resistance by exudation of antimicrobials from roots
Article Abstract:
A study shows that the exudation of root-derived antimicrobial metabolites by Arabidopsis thaliana confers tissue-specific resistance to a wide range of bacterial pathogens. However, a Pseudomonas syringae strain that is both at least partly resistant to these compounds and capable of blocking their synthesis or exudation is able to infect the roots and cause disease.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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Mitochondrial remnant organelles of Giardia function in iron-sulphur protein maturation
Article Abstract:
Giardia contains mitochondrial remnant organelles bounded by double membranes that function in iron-sulphur protein maturation. Giardia is not primitively amitochondrial and has retained a functional organelle derived from the original mitochondrial endosymbiont.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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