Cited by 107Protist diversity and phylogenyPhotosynthetic Processes and MechanismsChromosomal and Genetic Variations

Horizontal and endosymbiotic gene transfer in early plastid evolution

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Ponce‐Toledo, Rafael I., López‐García, Purificación, Moreira, David·2019·New Phytologist

Abstract

Summary: Plastids evolved from a cyanobacterium that was engulfed by a heterotrophic eukaryotic host and became a stable organelle. Some of the resulting eukaryotic algae entered into a number of secondary endosymbioses with diverse eukaryotic hosts. These events had major consequences on the evolution and diversification of life on Earth. Although almost all plastid diversity derives from a single endosymbiotic event, the analysis of nuclear genomes of plastid‐bearing lineages has revealed a mosaic origin of plastid‐related genes. In addition to cyanobacterial genes, plastids recruited for their functioning eukaryotic proteins encoded by the host nucleus and also bacterial proteins of noncyanobacterial origin. Therefore, plastid proteins and plastid‐localised metabolic pathways evolved by tinkering and using gene toolkits from different sources. This mixed heritage seems especially complex in secondary algae containing green plastids, the acquisition of which appears to have been facilitated by many previous acquisitions of red algal genes (the ‘red carpet hypothesis’).

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Authors
Ponce‐Toledo, R. I., López‐García, P., & Moreira, D.
Affiliations
  • Unité d'Ecologie Systématique et Evolution CNRS Université Paris‐Sud AgroParisTech Université Paris‐Saclay 91400 Orsay France
  • Université Paris-Sud (FR)
Corresponding author
Moreira, David
Venue
New Phytologist
Publisher
Wiley
Published
2019-07-04
Volume
224
Issue
2
Pages
618-624
ISSN
  • 0028-646X (ISSN-L)
  • 1469-8137
OpenAlex
W2946856823
Cited by
107
References
56
Citations by year
2026: 9 · 2025: 15 · 2024: 25 · 2023: 12 · 2022: 19 · 2021: 17 · 2020: 8 · 2019: 2
FWCI
1.01
Type
journal article
Language
en
Open access
Locations
  • New Phytologist (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • H2020 European Research Council (322669)
  • Agence Nationale de la Recherche (‘ANCESSTRAM’ ANR‐15‐CE32‐0003)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
plastid evolution, endosymbiosis, horizontal gene transfer, secondary endosymbiosis, nuclear gene transfer, eukaryotic algae
MeSH terms
Biological Evolution, Gene Expression Regulation, Photosynthesis, Symbiosis, Plastids, Gene Transfer, Horizontal

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