<i>ETOILE</i>Regulates Developmental Patterning in the Filamentous Brown Alga<i>Ectocarpus siliculosus</i>

Bail, Aude Le; Billoud, Bernard; Panse, Sophie Le; Chenivesse, Sabine; Charrier, Bénédicte

doi:10.1105/tpc.110.081919

Cited by 49 publications

(46 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ectocarpus therefore appears to be a relevant model to explore the emergence of complex multicellularity in the brown algae. For the present, however, Ectocarpus developmental biology is in its infancy and, although several interesting developmental mutants have been described Le Bail et al 2011;Peters et al 2008), it will probably be some time before the molecular mechanisms underlying multicellular development are described and experimentally validated in any detail in this species.…”

Section: Brown Algal Developmental Complexitymentioning

confidence: 98%

See 1 more Smart Citation

Independent Emergence of Complex Multicellularity in the Brown and Red Algae

Cock

Collén

2015

Advances in Marine Genomics

View full text Add to dashboard Cite

Brown and red macroalgae represent two of only five eukaryotic groups that have independently evolved complex multicellularity. Compared with animals and land plants, very little is known about the molecular mechanisms underlying multicellular development in the two macroalgal groups, but the recent publication of complete genome sequences for both of these lineages has been a first step towards changing this situation. Comparisons of these genomes with those of other multicellular and unicellular organisms have identified a number of features that may be related to the transitions to complex multicellularity in these macroalgal lineages. One particularly striking feature of the brown algae, for example, is the emergence of a family of membrane-spanning receptor kinases, a class of molecules that is also thought to have been important for the transition to complex multicellularity in animals and land plants. Surprisingly, the genomes of the brown alga Ectocarpus and the red alga Chondrus are remarkably different at the structural level, despite the fact that both organisms represent lineages that have evolved multicellularity as sedentary organisms in the seashore environment. Current efforts to identify and characterise developmental regulators in macroalgae are expected to enrich comparisons with other complex multicellular lineages.

show abstract

Section: Brown Algal Developmental Complexitymentioning

confidence: 98%

“…Finally, a morphogenetic mutant, étoile (etl), has also been described (Le Bail et al 2011). This mutation effects both cellular differentiation and growth habit (branching).…”

Section: Experimental Investigation Of the Molecular Mechanisms Undermentioning

confidence: 99%

Independent Emergence of Complex Multicellularity in the Brown and Red Algae

Cock

Collén

2015

Advances in Marine Genomics

View full text Add to dashboard Cite

show abstract

“…The latter transport photosynthate in a manner analogous to the land plant vascular system (Buggeln 1983). For the present, however, Ectocarpus developmental biology is in its infancy and, although several interesting developmental mutants have been described Le Bail et al 2011;, it will probably be some time before the molecular mechanisms underlying multicellular development are described and experimentally validated in any detail in this species. Progress in this domain has been hampered by the absence of a model system adapted for the dissection of developmental pathways.…”

Section: Brown Algal Developmental Complexitymentioning

confidence: 99%

Evolutionary Transitions to Multicellular Life

Sharpe¹,

Solé²,

Sebé-Pedrós³

et al. 2015

Advances in Marine Genomics

View full text Add to dashboard Cite

This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made.Printed on acid-free paper Springer Netherlands is part of Springer Science+Business Media (www.springer.com) ForewordAs a young child growing up in Florida, I would set out on "treasure hunts" to look for fossils. The discovery of a Megalodon tooth or a mysterious fossilized bone would inspire thoughts about the lives of long-extinct creatures in a world before humans. And while my musings started with the fossils I could find and hold, with time I became curious about organisms and events from increasingly ancient times. How did tetrapods evolve? What about their ancestors, early aquatic vertebrates? How did developmental patterning evolve in the first bilaterians? And before that? What did the first animals look like? And from what did they evolve?How animals evolved from their single celled ancestors is one of the great mysteries in evolution and was likely set in motion by the origin of multicellularity. A remarkable process, one so striking that it is considered one of only eight "Major Transitions" in evolutionary history (Maynard Smith, John; Szathmáry, Eörs (1995). The Major Transitions in Evolution. Oxford, England: Oxford University Press. ISBN 0-19-850294-X), the transition to multicellularity occurred not just once, but repeatedly in diverse lineages. From relatively inconspicuous beginnings-sister cells that remained attached following division rather than going it alone-evolved the many multicellular life forms that fill our visible world today: brown algae, red algae, green algae, land plants, fungi, and animals.Despite the inherent interest surrounding the origins of multicellularity, relatively little is known about when, how, and why multicellularity evolved in each lineage. The potential barriers to reconstructing ancient transitions to multicellularity are diverse. For most multicellular lineages, the transition to multicellularity occurred hundreds of millions of years ago. The unicellular progenitors of...

show abstract

“…The variability in the pattern of early development in Ectocarpus contrasts with the highly ordered development of other model organisms such as Fucus or Arabidopsis. A recent study has shown that a mutation at the ETOILE locus results in a modified pattern of early development, mutant algae initiating branching more rapidly than wild-type individuals (Le Bail et al 2011). …”

Section: Morphogenesismentioning

confidence: 99%

Ectocarpus: A Model Organism for the Brown Algae

Coelho

Scornet²,

Rousvoal³

et al. 2012

Cold Spring Harb Protoc

View full text Add to dashboard Cite

The brown algae are an interesting group of organisms from several points of view. They are the dominant organisms in many coastal ecosystems, where they often form large, underwater forests. They also have an unusual evolutionary history, being members of the stramenopiles, which are very distantly related to well-studied animal and green plant models. As a consequence of this history, brown algae have evolved many novel features, for example in terms of their cell biology and metabolic pathways. They are also one of only a small number of eukaryotic groups to have independently evolved complex multicellularity. Despite these interesting features, the brown algae have remained a relatively poorly studied group. This situation has started to change over the last few years, however, with the emergence of the filamentous brown alga Ectocarpus as a model system that is amenable to the genomic and genetic approaches that have proved to be so powerful in more classical model organisms such as Drosophila and Arabidopsis.

show abstract

ETOILERegulates Developmental Patterning in the Filamentous Brown AlgaEctocarpus siliculosus

Cited by 49 publications

References 50 publications

Independent Emergence of Complex Multicellularity in the Brown and Red Algae

Independent Emergence of Complex Multicellularity in the Brown and Red Algae

Evolutionary Transitions to Multicellular Life

Ectocarpus: A Model Organism for the Brown Algae

Contact Info

Product

Resources

About