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Front Plant Sci. 2015 Feb 19;6:72. doi: 10.3389/fpls.2015.00072. eCollection 2015.

The green seaweed Ulva: a model system to study morphogenesis.

Author information

1
Institute for Inorganic and Analytical Chemistry, Jena School for Microbial Communication, Friedrich Schiller University Jena , Jena, Germany.
2
UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, Centre National de la Recherche Scientifique , Roscoff, France ; UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, Sorbonne Universités, UPMC University of Paris 06 , Roscoff, France.
3
School of Biological Sciences, Queen's University of Belfast , Belfast, UK.
4
School of Biological and Biomedical Sciences and Durham Energy Institute, Durham University , Durham, UK.
5
Phycology Research Group and Center for Molecular Phylogenetics and Evolution, Ghent University , Ghent, Belgium.
6
School of Biosciences, University of Birmingham , Birmingham, UK.

Abstract

Green macroalgae, mostly represented by the Ulvophyceae, the main multicellular branch of the Chlorophyceae, constitute important primary producers of marine and brackish coastal ecosystems. Ulva or sea lettuce species are some of the most abundant representatives, being ubiquitous in coastal benthic communities around the world. Nonetheless the genus also remains largely understudied. This review highlights Ulva as an exciting novel model organism for studies of algal growth, development and morphogenesis as well as mutualistic interactions. The key reasons that Ulva is potentially such a good model system are: (i) patterns of Ulva development can drive ecologically important events, such as the increasing number of green tides observed worldwide as a result of eutrophication of coastal waters, (ii) Ulva growth is symbiotic, with proper development requiring close association with bacterial epiphytes, (iii) Ulva is extremely developmentally plastic, which can shed light on the transition from simple to complex multicellularity and (iv) Ulva will provide additional information about the evolution of the green lineage.

KEYWORDS:

algal genetics; chlorophyta; green tides; holobiont; model organism; multicellular organism

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