COMPLEX EVOLUTIONARY TRANSITIONS AND THE SIGNIFICANCE OF C3–C4 INTERMEDIATE FORMS OF PHOTOSYNTHESIS IN MOLLUGINACEAE

@article{Christin2011COMPLEXET,
  title={COMPLEX EVOLUTIONARY TRANSITIONS AND THE SIGNIFICANCE OF C3–C4 INTERMEDIATE FORMS OF PHOTOSYNTHESIS IN MOLLUGINACEAE},
  author={Pascal-Antoine Christin and Tammy L. Sage and Erika J. Edwards and R. Matthew Ogburn and Roxana Khoshravesh and Rowan F. Sage},
  journal={Evolution},
  year={2011},
  volume={65}
}
C4 photosynthesis is a series of biochemical and structural modifications to C3 photosynthesis that has evolved numerous times in flowering plants, despite requiring modification of up to hundreds of genes. To study the origin of C4 photosynthesis, we reconstructed and dated the phylogeny of Molluginaceae, and identified C4 taxa in the family. Two C4 species, and three clades with traits intermediate between C3 and C4 plants were observed in Molluginaceae. C3–C4 intermediacy evolved at least… 
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Evolutionary implications of C3 -C4 intermediates in the grass Alloteropsis semialata.
TLDR
This work decomposes the photosynthetic phenotypes of numerous individuals of the grass Alloteropsis semialata, the only species known to include both C3 and C4 genotypes, and demonstrates for the first time the existence of physiological C3 -C4 intermediate individuals in the species.
A broader model for C4 photosynthesis evolution in plants inferred from the goosefoot family (Chenopodiaceae s.s.)
TLDR
The paradigm established in grasses must be regarded as just one aspect of a more complex system of C4 evolution in plants in general, and possible reversions from C4 to C3 are apparent.
Anatomical enablers and the evolution of C4 photosynthesis in grasses
TLDR
Results show that key alterations of foliar anatomy occurring in a C3 context and preceding the emergence of the C4 syndrome by millions of years facilitated the repeated evolution of one of the most successful physiological innovations in angiosperm history.
Evolutionary History of Blepharis (Acanthaceae) and the Origin of C4 Photosynthesis in Section Acanthodium
TLDR
A phylogenetic framework of Blepharis is presented and hypotheses of where and when C4 photosynthesis evolved in the genus are presented, suggesting that it evolved two or three times in southern Africa and Asia between 1 and 5 million years ago.
Multiple photosynthetic transitions, polyploidy, and lateral gene transfer in the grass subtribe Neurachninae
TLDR
The Neurachninae shows a substantial capacity to evolve new photosynthetic pathways repeatedly, and may have facilitated a rapid adaptation of photosynthesis in these grasses that had to survive in the harsh climate appearing during the late Pliocene in Australia.
Photosynthesis in C3–C4 intermediate Moricandia species
TLDR
The results indicate that metabolic limitations connected to N metabolism or anatomical limitationsconnected to vein density could have constrained evolution of C4 in Moricandia.
Evolution of the C4 photosynthetic pathway: events at the cellular and molecular levels
  • M. Ludwig
  • Biology, Environmental Science
    Photosynthesis Research
  • 2013
The biochemistry and leaf anatomy of plants using C4 photosynthesis promote the concentration of atmospheric CO2 in leaf tissue that leads to improvements in growth and yield of C4 plants over C3…
Initial Events during the Evolution of C4 Photosynthesis in C3 Species of Flaveria1[W][OPEN]
TLDR
Compared with less-related C3 species, bundle sheath cells of F. pringlei and F. robusta had more mitochondria and chloroplasts, larger mitochondria, and proportionally more of these organelles located along the inner cell periphery, indicating an increase in photosynthetic efficiency.
Despite phylogenetic effects, C3–C4 lineages bridge the ecological gap to C4 photosynthesis
TLDR
Large‐scale analyses suggest that C3‐C4 lineages converged toward warm habitats, which may have facilitated the transition to C4 photosynthesis, effectively bridging the ecological gap between C3 and C4 plants.
The recurrent assembly of C4 photosynthesis, an evolutionary tale
TLDR
The existence of C4-suitable bricks probably determined the lineages of plants that could make the transition to C4 photosynthesis, highlighting the power of contingency in evolution.
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References

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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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