Analysis of Fruiting Body Development in the Aggregative Ciliate <i>Sorogena stoianovitchae</i> (Ciliophora, Colpodea)

Sugimoto, Hiroki; Endoh, Hiroshi

doi:10.1111/j.1550-7408.2005.00077.x

Cited by 23 publications

(25 citation statements)

References 22 publications

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“…Even a ciliate species, Sorogena stoianovitchae from the supergroup Chromalveolata aggregates by cell adhesion to form a fruiting structure with encysted cells (Olive 1978;Sugimoto and Endoh 2006). Several unrelated amoeboid protists, such as Acrasis and Pocheina in the supergroup Excavata and Fonticula alba in Opisthokonta ) also form fruiting bodies by aggregation of single cells.…”

Section: Discussionmentioning

confidence: 99%

Evolutionary Transitions to Multicellular Life

Sharpe¹,

Solé²,

Sebé-Pedrós³

et al. 2015

Advances in Marine Genomics

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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...

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Section: Discussionmentioning

confidence: 99%

Evolutionary Transitions to Multicellular Life

Sharpe¹,

Solé²,

Sebé-Pedrós³

et al. 2015

Advances in Marine Genomics

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“…2a). This sheath then contracts and elongates to form an acellular stalk that lifts the cell mass above the water surface, followed by encystation of the ciliate cells (51, 52). Some heterolobose amoeba genera in the Excavates , such as Acrasis spp .…”

Section: Classification Of Amoebozoamentioning

confidence: 99%

The Amoebozoa

Schilde

Schaap²

2013

Methods in Molecular Biology

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The model organism Dictyostelium discoideum is a member of the Amoebozoa, one of the six major divisions of eukaryotes. Amoebozoa comprise a wide variety of amoeboid and flagellate organisms with single cells measuring from 5 μm to several meters across. They have adopted many different life styles and sexual behaviors and can live in all but the most extreme environments. This chapter provides an overview of Amoebozoan diversity and compares roads towards multicellularity within the Amoebozoa with inventions of multicellularity in other protist divisions. The chapter closes with a scenario for the evolution of Dictyostelid multicellularity from an Amoebozoan stress response.

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“…In many and perhaps all cases, colony formation may have been the first step towards multicellularity [1]. Although higher plants and animals have converted to zygotic multicellularity, colonial or aggregative multicellularity still occurs in many eukaryote kingdoms, such as Chromalveolata [2], Excavata [3], Amoebozoa [4,5] and Opisthokonta [6]. …”

Section: Introductionmentioning

confidence: 99%

Analysis of phenotypic evolution in Dictyostelia highlights developmental plasticity as a likely consequence of colonial multicellularity

et al. 2013

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Colony formation was the first step towards evolution of multicellularity in many macroscopic organisms. Dictyostelid social amoebas have used this strategy for over 600 Myr to form fruiting structures of increasing complexity. To understand in which order multicellular complexity evolved, we measured 24 phenotypic characters over 99 dictyostelid species. Using phylogenetic comparative methods, we show that the last common ancestor (LCA) of Dictyostelia probably erected small fruiting structures directly from aggregates. It secreted cAMP to coordinate fruiting body morphogenesis, and another compound to mediate aggregation. This phenotype persisted up to the LCAs of three of the four major groups of Dictyostelia. The group 4 LCA co-opted cAMP for aggregation and evolved much larger fruiting structures. However, it lost encystation, the survival strategy of solitary amoebas that is retained by many species in groups 1–3. Large structures, phototropism and a migrating intermediate ‘slug’ stage coevolved as evolutionary novelties within most groups. Overall, dictyostelids show considerable plasticity in the size and shape of multicellular structures, both within and between species. This probably reflects constraints placed by colonial life on developmental control mechanisms, which, depending on local cell density, need to direct from 10 to a million cells into forming a functional fructification.

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Analysis of Fruiting Body Development in the Aggregative Ciliate Sorogena stoianovitchae (Ciliophora, Colpodea)

Cited by 23 publications

References 22 publications

Evolutionary Transitions to Multicellular Life

Evolutionary Transitions to Multicellular Life

The Amoebozoa

Analysis of phenotypic evolution in Dictyostelia highlights developmental plasticity as a likely consequence of colonial multicellularity

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