Flowering plants have unparallelled rates of photosynthesis allowing them to grow faster and outcompete ferns and conifers. “The flowering plants are the most important group of plants on Earth, and now we finally know why they have been so successful,” the researchers said. Over the last thirty years, researchers have shown that the flowering plants have unparallelled rates of photosynthesis. Because each cell has to contain a copy of the plant’s genome, smaller genomes allow cells to be smaller, researchers said. Comparing hundreds of species, the researchers found that genome downsizing began about 140 million years ago and coincided with the spread of the earliest flowering plants around the world.
Source: The Hindu January 12, 2018 08:51 UTC