On the origin of oxygenic photosynthesis and Cyanobacteria.

New Phytol

Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK.

Published: February 2020


Article Synopsis

  • Oxygenic phototrophs, particularly Cyanobacteria, significantly contributed to the rise of atmospheric oxygen, which was crucial for the evolution of animals on Earth.
  • Understanding the origins of photosynthesis is complicated because it likely developed in now-extinct bacterial lineages, making the early history difficult to trace.
  • Recent advancements in genomic and molecular studies have enhanced our knowledge about the evolution of photosynthetic reaction centers and provided new insights into the origin and evolution of photosynthesis.

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Article Abstract

Oxygenic phototrophs have played a fundamental role in Earth's history by enabling the rise of atmospheric oxygen (O ) and paving the way for animal evolution. Understanding the origins of oxygenic photosynthesis and Cyanobacteria is key when piecing together the events around Earth's oxygenation. It is likely that photosynthesis evolved within bacterial lineages that are not extant, so it can be challenging when studying the early history of photosynthesis. Recent genomic and molecular evolution studies have transformed our understanding about the evolution of photosynthetic reaction centres and the evolution of Cyanobacteria. The evidence reviewed here highlights some of the most recent advances on the origin of photosynthesis both at the genomic and gene family levels.

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http://dx.doi.org/10.1111/nph.16249DOI Listing

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