Selection on duplicated plant volatile genes is thought to have enabled the evolution of floral volatiles crucial to plant-insect interactions.
Finding out when the earliest ancestor of the flowering plants evolved has been difficult. Estimates have been wildly different, depending on the method you use.
A polysaccharide found in the cell walls of land plants has now been found outside the cell. This chemical, Xyloglucan, could be one of clues as to how plants moved onto land.
One of the most ancient forms of life on the planet might be more common than we thought.