Washington, Dec 21.- The basis of photosynthesis in the current plants originated 1.25 billion years ago, according to a study with the world's oldest algae fossils published today in the journal Geology.
The study was based on the fossilized algae Bangiomorpha pubescens, discovered in rocks of the Canadian Arctic in 1990, explained the lead author of the work, Galen Halverson, associate professor in the Department of Earth and Planetary Sciences of McGill.
Through the technique of dating rhenium-osmium, applied more and more to sedimentary rocks in recent years, they determined that the rocks have 1.047 billion years.
'That's 150 million years younger than the common estimates,' said lead author Galen Halverson, an associate professor in the Department of Planetary and Earth Sciences of McGill.
His team also determined that the chloroplast (structure in plant cells where photosynthesis occurs) was created when a eukaryote swallowed a simple bacterium that was photosynthetic long ago.
According to his calculations, that process occurred approximately 1.2 billion years ago. (Prensa Latina)