The explosion of new genes explained the origin of land plants, The new study questions the well-established view of the origin of plants on land and shows that, compared to the origins of animals, plants are better able to discover new genes during evolution.
Plants are one of the most important areas of life and are the basis for almost all ecosystems, because they are an important source of food and oxygen. During evolution, all organisms acquire new genes, lose old genes or just recycle genes. The research team began to understand genetic changes that occurred during the evolutionary transition of plants by comparing more than 200 genomes, one of the largest data sets ever collected to study the evolution of the plant kingdom and the new genes explained the origin of land plants.
Using sophisticated computer technology, researchers can basically travel back to 470 million years ago to find out which genes were in the first land plants when they changed from living in water to drought.
Comparing more than 200 genomes of royal plants, we found that the origin of land plants was related to two new gene explosions, an unprecedented level of genome renewal. Based on our knowledge, previous views about this transition are more gradual at the genetic level.
The first explosion preceded the origin of land plants before they left their aquatic environment and consisted of genes that explain why plants are multicellular. The second concerns the origin of terrestrial plants and includes genes associated with adapting to terrestrial environmental challenges. The team now plans to identify drought-resistant genes in plant plants in the same way. We now plan to use the same approach to further study the genes involved in drought tolerance, researchers say.
Most plants are sensitive to drought. Using our method, we can find genes that are involved in drought resistance and we may be able to incorporate them into plants that are sensitive to drying.