How single cells work together

@article{Zehr2015HowSC,
  title={How single cells work together},
  author={Jonathan P. Zehr},
  journal={Science},
  year={2015},
  volume={349},
  pages={1163 - 1164}
}
  • J. Zehr
  • Published 2015
  • Biology, Medicine
  • Science
Are single-celled symbioses organelle evolution in action? Symbiotic interactions are fundamental to life on Earth and were critical for the evolution of organelles that led to the success of eukaryotes on the planet. Such mutualistic interactions between unicellular microorganisms and multicellular plants and animals are pervasive in natural and agricultural ecosystems (1). In contrast, very little is known about symbiotic interactions between unicellular partners. Recent studies have revealed… Expand

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References

SHOWING 1-10 OF 18 REFERENCES
Global distribution and vertical patterns of a prymnesiophyte–cyanobacteria obligate symbiosis
A marine symbiosis has been recently discovered between prymnesiophyte species and the unicellular diazotrophic cyanobacterium UCYN-A. At least two different UCYN-A phylotypes exist, the cladeExpand
Evolving new organisms via symbiosis
TLDR
The application of next-generation sequencing and advanced microscopic techniques has revealed not only the ubiquity of symbiotic partnerships, but the extent to which partnerships can become physically, genomically, and metabolically integrated. Expand
Microbial Oceanography: Research and Education; a Gordon and Betty Moore Foundation grant; and the Simons Collaboration on Ocean Processes and Ecology (SCOPE). Micrographs
  • ISME J. 9,
  • 2015
Significant N2 fixation by heterotrophs, photoheterotrophs and heterocystous cyanobacteria in two temperate estuaries
TLDR
It is shown for the first time that significant planktonic N2 fixation takes place in mesohaline, temperate estuaries and that the importance of heterotrophic, photoheterotrophic and photosynthetic diazotrophs is clearly variable in space and time. Expand
Comparative genomics reveals surprising divergence of two closely related strains of uncultivated UCYN-A cyanobacteria
TLDR
The results suggest that UCYN-A1 and UCyn-A2 had a common ancestor and diverged after genome reduction, suggesting that these two variants may reflect adaptation of the host to different niches, which could be coastal and open ocean habitats. Expand
Complete genome of a nonphotosynthetic cyanobacterium in a diatom reveals recent adaptations to an intracellular lifestyle
TLDR
The E. turgida spheroid body (EtSB) genome was found to possess a gene set for nitrogen fixation, as anticipated, but is reduced in size and gene repertoire compared with the genomes of their closest known free-living relatives. Expand
Discovery of an Endosymbiotic Nitrogen-Fixing Cyanobacterium UCYN-A in Braarudosphaera bigelowii (Prymnesiophyceae)
TLDR
It is suggested that C. parkeae is the alternate life cycle stage of B. bigelowii sensu stricto or that of a sibling species of B., which originated from endosymbiosis of the nitrogen-fixing cyanobacterium UCYN-A. Expand
Trafficking of protein into the recently established photosynthetic organelles of Paulinella chromatophora
Endosymbiotic acquisition of bacteria by a protist, with subsequent evolution of the bacteria into mitochondria and plastids, had a transformative impact on eukaryotic biology. Reconstructing eventsExpand
Unicellular Cyanobacterium Symbiotic with a Single-Celled Eukaryotic Alga
TLDR
It is shown that UCYN-A has a symbiotic association with a unicellular prymnesiophyte, closely related to calcifying taxa present in the fossil record, and this unusual partnership is a model for symbiosis and is analogous to plastid and organismal evolution, and may have important implications for past and present oceanic N2 fixation. Expand
Metabolic streamlining in an open-ocean nitrogen-fixing cyanobacterium
TLDR
It is found that UCYN-A lacks a number of major metabolic pathways including the tricarboxylic acid cycle, but retains sufficient electron transport capacity to generate energy and reducing power from light, and is dependent on other organisms for essential compounds. Expand
...
1
2
...