Building a multicellular organism.

@article{Kaiser2001BuildingAM,
  title={Building a multicellular organism.},
  author={Dale Kaiser},
  journal={Annual review of genetics},
  year={2001},
  volume={35},
  pages={
          103-23
        }
}
  • D. Kaiser
  • Published 2001
  • Biology
  • Annual review of genetics
Multicellular organisms appear to have arisen from unicells numerous times. Multicellular cyanobacteria arose early in the history of life on Earth. Multicellular forms have since arisen independently in each of the kingdoms and several times in some phyla. If the step from unicellular to multicellular life was taken early and frequently, the selective advantage of multicellularity may be large. By comparing the properties of a multicellular organism with those of its putative unicellular… 

Figures and Tables from this paper

The molecular origins of multicellular transitions.
  • A. Rokas
  • Biology
    Current opinion in genetics & development
  • 2008
The Evolution of Multicellularity: A Minor Major Transition?
TLDR
Benefits of increased size and functional specialization of cells have repeatedly promoted the evolution of multicellular organisms from unicellular ancestors, but these benefits may be opposed by genetic conflicts that arise when mutant cell lineages promote their own increase at the expense of the integrity of the multice cellular organism.
De novo origins of multicellularity in response to predation
TLDR
It is shown that de novo origins of simple multicellularity can evolve in response to predation, and this results support the hypothesis that selection imposed by predators may have played a role in some origins of multICEllularity.
De novo origins of multicellularity in response to predation
TLDR
It is shown that de novo origins of simple multicellularity can evolve in response to predation, and this results support the hypothesis that selection imposed by predators may have played a role in some origins of multICEllularity.
Selective drivers of simple multicellularity.
The origin of multicellularity in cyanobacteria
TLDR
Comparison to the fossil record supports an early origin of multicellularity, possibly as early as the "Great Oxygenation Event" that occurred 2.45 - 2.22 billion years ago.
Understanding “green” multicellularity: do seaweeds hold the key?
TLDR
The molecular mechanisms by which organisms become multicellular are not well understood, and how to increase the future understanding is discussed.
Evolution of Multicellularity
TLDR
The transition from a unicellular to a multicellular life-style constitutes a transition in individuality, a process whereby a group of previously independent individuals become stably integrated into a new functional, physiological and reproductively autonomous and indivisible evolutionary unit.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 65 REFERENCES
The Evolution of Soma in the Volvocales
TLDR
The allometry of soma and germ supports the idea that soma functions to provide functional flagella during the embryogenesis of large colonies (Volvocaceae), and suggests that the cell wall is a preadaptation for the evolution of large multicellular colonies with deterministic development.
Heterocyst pattern formation controlled by a diffusible peptide.
TLDR
Overexpression of a 54-base-pair gene, patS, blocked heterocyst differentiation in Anabaena sp.
Cyanobacterial Phylogeny and Development: Questions and Challenges
TLDR
Although the most clearly differentiated cells are heterocysts and akinetes, there is increasing evidence for more subtle forms of differentiation in at least two genera, Trichodesmium and Cliroococcidiopsis.
Cell alignment required in differentiation of Myxococcus xanthus.
TLDR
It is proposed that directed cell movement establishes critical contacts between adjacent cells, which are required for efficient intercellular C-factor transmission during fruiting body morphogenesis of Myxococcus xanthus.
Myxobacteria: A Most Peculiar Group of Social Prokaryotes
TLDR
This chapter shall discuss the myxobacteria in a more general framework, and most of the morphogenetic studies and all of the genetics have been carried out on one particular organism, Myxococcus xanthus, so that this book will deal mainly with that species.
The Paleobiologic Record of Cyanobacterial Evolution
  • J. Schopf
  • Geography, Environmental Science
  • 2000
TLDR
This chapter considers one of the broadest questions of microbial evolutionary development, namely, what does the paleobiological record suggest about the tempo and mode of prokaryotic, especially cyanobacterial evolution, as well as biotic interactions with long-term environmental change and the physiology and biochemistry of ancient fife.
Spatial control of cell differentiation in Myxococcus xanthus.
TLDR
It is proposed that expression of certain genes, including those of the dev operon, is limited to the nascent fruiting body because fruitingBody cells engage in a high level of C-signaling.
Pattern formation in the blue-green alga, Anabaena. I. Basic mechanisms.
TLDR
An interactive model for pattern formation in Anabaena is proposed, where a pattern consisting of groups of consecutive proheterocysts is seen which resolves into a normal discrete pattern.
Evolutionary relationships among cyanobacteria and green chloroplasts
TLDR
The results indicate that many diverse forms of cyanobacteria diverged within a short span of evolutionary distance and suggest that the chloroplast lineage, which includes the cyanelle of C. paradoxa, is not just a sister group to the free-living forms but rather is contained within the cyanobacterial radiation.
Extensive Gene Duplication in the Early Evolution of Animals Before the Parazoan–Eumetazoan Split Demonstrated by G Proteins and Protein Tyrosine Kinases from Sponge and Hydra
TLDR
The pattern of gene diversification during animal evolution might be characterized by bursts of gene duplication interrupted by considerably long periods of silence, instead of proceeding gradually, and there might be no direct link between the Cambrian explosion and the extensive gene duplication that generated diverse functions (subtypes) of these families.
...
1
2
3
4
5
...