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10 de mayo de 2016

Strange seaweed rewrites history of green plants

Strange Seaweed Rewrites the History of Green Plants An ancient alga developed large size and complex structure independently of other plants
Emma Marris, 09 may 2016



A mysterious deep-ocean seaweed diverged from the rest of the green-plant family around 540 million years ago, developing a large body with a complex structure independently from all other sea or land plants. All of the seaweed’s close relatives are unicellular plankton. The finding, published today in Scientific Reports, upends conventional wisdom about the early evolution of the plant kingdom. “People have always assumed that within the green-plant lineage, all the early branches were unicellular,” says Frederik Leliaert, an evolutionary biologist at Ghent University in Belgium. “It is quite surprising that among those, a macroscopic seaweed pops up.”


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