Scientists have revealed for the first time that gene clustering is the key to rice's resistance to weeds

Science and Technology Daily News (Hong Hengfei Ke-eneng reporter Jiang Yu) recently, reporters from Zhejiang University was informed that the university's School of Agriculture and Biotechnology Professor Yan Longjiang team of Japanese scientists after 5 years of research, the first time revealed that the relevant genes in the genome cluster arrangement is the key to rice synthesis against the grass "biochemical weapon" rice crustacean, while confirming that such gene cluster evolution events, through convergence evolution in the plant community has occurred independently many times. The results were published in
American Academy of Sciences.
growers choose to spray herbicides in response to straw-based straw weeds, but this can lead to pesticide residues, soil contamination and increased production costs. In addition to borrowing external forces, rice itself has evolved a defensive secondary metabolite, rice crustaceans, which can be secreted through the root system to inhibit the growth of surrounding plants such as weeds. It is very important to explore the production mechanism of rice crustacean for rice breeding in the future.
japanese and Japanese scientists based on a large-scale analysis of more than 100 sequenced plant genomes, found that only rice, large ash, and grass have evolved in the plant world. Although some plants have also evolved key genes associated with the synthesis of rice crustaceans, they are not tightly arranged in clusters on the genome and therefore cannot be synthesized into rice crustaceans. 'Genetic clusters have a selective advantage in evolution and are resistant to external influences, ' Mr. Yu said. 'Genetic clustering seems to be a necessary condition for the synthesis of rice crustaceans.
researchers also found that the synthesis of rice crustaceans is an independent evolutionary event of natural selection. "That is, other plants with rice crustaceans may be found in the future." Yu Longjiang said.