Journal ArticleDOI
Photosynthetic eukaryotes unite: endosymbiosis connects the dots
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TLDR
Algal diversity is examined and endosymbiosis is shown to be a major force in algal evolution, with long-standing issues such as the chromalveolate hypothesis and the extent of endOSymbiotic gene transfer clarified.Abstract:
The photosynthetic organelle of algae and plants (the plastid) traces its origin to a primary endosymbiotic event in which a previously non-photosynthetic protist engulfed and enslaved a cyanobacterium. This eukaryote then gave rise to the red, green and glaucophyte algae. However, many algal lineages, such as the chlorophyll c-containing chromists, have a more complicated evolutionary history involving a secondary endosymbiotic event, in which a protist engulfed an existing eukaryotic alga (in this case, a red alga). Chromists such as diatoms and kelps then rose to great importance in aquatic habitats. Another algal group, the dinoflagellates, has undergone tertiary (engulfment of a secondary plastid) and even quaternary endosymbioses. In this review, we examine algal diversity and show endosymbiosis to be a major force in algal evolution. This area of research has advanced rapidly and long-standing issues such as the chromalveolate hypothesis and the extent of endosymbiotic gene transfer have recently been clarified.read more
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Journal ArticleDOI
The Chlamydomonas Genome Reveals the Evolution of Key Animal and Plant Functions
Sabeeha S. Merchant,Simon E. Prochnik,Olivier Vallon,Elizabeth H. Harris,Steven J. Karpowicz,George B. Witman,Astrid Terry,Asaf Salamov,Lillian K. Fritz-Laylin,Laurence Maréchal-Drouard,Wallace F. Marshall,Liang-Hu Qu,David R. Nelson,Anton A. Sanderfoot,Martin H. Spalding,Vladimir V. Kapitonov,Qinghu Ren,Patrick J. Ferris,Erika Lindquist,Harris Shapiro,Susan Lucas,Jane Grimwood,Jeremy Schmutz,Pierre Cardol,Pierre Cardol,Heriberto Cerutti,Guillaume Chanfreau,Chun-Long Chen,Valérie Cognat,Martin T. Croft,Rachel M. Dent,Susan K. Dutcher,Emilio Fernández,Hideya Fukuzawa,David González-Ballester,Diego González-Halphen,Armin Hallmann,Marc Hanikenne,Michael Hippler,William Inwood,Kamel Jabbari,Ming Kalanon,Richard Kuras,Paul A. Lefebvre,Stéphane D. Lemaire,Alexey V. Lobanov,Martin Lohr,Andrea L Manuell,Iris Meier,Laurens Mets,Maria Mittag,Telsa M. Mittelmeier,James V. Moroney,Jeffrey L. Moseley,Carolyn A. Napoli,Aurora M. Nedelcu,Krishna K. Niyogi,Sergey V. Novoselov,Ian T. Paulsen,Greg Pazour,Saul Purton,Jean-Philippe Ral,Diego Mauricio Riaño-Pachón,Wayne R. Riekhof,Linda A. Rymarquis,Michael Schroda,David B. Stern,James G. Umen,Robert D. Willows,Nedra F. Wilson,Sara L. Zimmer,Jens Allmer,Janneke Balk,Katerina Bisova,Chong-Jian Chen,Marek Eliáš,Karla C Gendler,Charles R. Hauser,Mary Rose Lamb,Heidi K. Ledford,Joanne C. Long,Jun Minagawa,M. Dudley Page,Junmin Pan,Wirulda Pootakham,Sanja Roje,Annkatrin Rose,Eric Stahlberg,Aimee M. Terauchi,Pinfen Yang,Steven G. Ball,Chris Bowler,Carol L. Dieckmann,Vadim N. Gladyshev,Pamela J. Green,Richard A. Jorgensen,Stephen P. Mayfield,Bernd Mueller-Roeber,Sathish Rajamani,Richard T. Sayre,Peter Brokstein,Inna Dubchak,David Goodstein,Leila Hornick,Y. Wayne Huang,Jinal Jhaveri,Yigong Luo,Diego Martinez,Wing Chi Abby Ngau,Bobby Otillar,Alexander Poliakov,Aaron Porter,Lukasz Szajkowski,Gregory Werner,Kemin Zhou,Igor V. Grigoriev,Daniel S. Rokhsar,Daniel S. Rokhsar,Arthur R. Grossman +118 more
TL;DR: Analyses of the Chlamydomonas genome advance the understanding of the ancestral eukaryotic cell, reveal previously unknown genes associated with photosynthetic and flagellar functions, and establish links between ciliopathy and the composition and function of flagella.
Journal ArticleDOI
A molecular timeline for the origin of photosynthetic eukaryotes
TL;DR: An ancient (late Paleoproterozoic) origin of photosynthetic eukaryotes with the primary endosymbiosis that gave rise to the first alga having occurred after the split of the Plantae from the opisthokonts sometime before 1,558 MYA is supported.
Journal ArticleDOI
Global trends of whole-genome duplications revealed by the ciliate Paramecium tetraurelia
Jean-Marc Aury,Olivier Jaillon,Laurent Duret,Benjamin Noel,Claire Jubin,Betina M. Porcel,Béatrice Ségurens,Vincent Daubin,Véronique Anthouard,Nathalie Aiach,Olivier Arnaiz,Alain Billaut,Janine Beisson,Isabelle Blanc,Khaled Bouhouche,Francisco Câmara,Sandra Duharcourt,Roderic Guigó,Delphine Gogendeau,Michael Katinka,Anne-Marie Keller,Roland Kissmehl,Catherine Klotz,Anne Le Mouël,Gersende Lepère,Sophie Malinsky,Mariusz Nowacki,Jacek K. Nowak,Helmut Plattner,Julie Poulain,Françoise Ruiz,Vincent Serrano,Marek Zagulski,Philippe Dessen,Mireille Bétermier,Mireille Bétermier,Jean Weissenbach,Claude Scarpelli,Vincent Schächter,Linda Sperling,Eric Meyer,Jean Cohen,Patrick Wincker +42 more
TL;DR: It is shown that in the unicellular eukaryote Paramecium tetraurelia, a ciliate, most of the nearly 40,000 genes arose through at least three successive whole-genome duplications.
Global trends of whole-genome duplications revealed by the ciliate
Jean-Marc Auryl,Olivier Jaillon,Laurent Duree,Claire Jubin,Betina M. Porcel,Béatrice Segurens,Vincent Daubin,Véronique Anthouard,Nathalie Aiach,Olivier Arnaiz,Alain Billaue,Janine Beisson,Isabelle Blanc,Khaled Bouhouche,Francisco Camara,Sandra Duharcourt,Roderic Guigó,Delphine Gogendeau,Michael Katinka,Anne-Marie Keller,Roland Kissmehl,Catherine Klotz,Anne Le Mouël,Gersende Lepère,Sophie Malinsky,Mariusz Nowacki,Jacek K. Nowak,Helmut Plattner,Julie Poulain,Vincent Serrano,Marek Zagulski,Philippe Dessen,Mireille Bétermier,Jean Weissenbach,Claude Scarpelli,Vincent Schächter,Linda Sperling,Eric Meyer,Jean Cohen,Patrick Wincker +39 more
TL;DR: In the unicellular eukaryote Paramecium tetraurelia, a ciliate, most of the nearly 40,000 genes arose through at least three successive whole-genome duplications as mentioned in this paper.
Journal ArticleDOI
Growth, feeding and ecological roles of the mixotrophic and heterotrophic dinoflagellates in marine planktonic food webs
TL;DR: A new marine planktonic food web focusing on mixotrophic and heterotrophic dinoflagellates is suggested and an insight is provided on the roles of din oflageLLates in the food web.
References
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Biology of Plants
TL;DR: BOTany: An Introduction to the Biology of the Plant Cell and the Cell Cycle is presented in this article, along with a detailed overview of the early development of the plant body.
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