The world's first database of plant repeat ingress reveals the general pattern of repeated gene evolution.

Why have plants become colorful over millions of years of evolution? An important factor is that plants replicate their genes to differentiate and diversity.
, Professor Zhang Shaoling of Nanjing Agricultural University, constructed the world's first database of plant repeat ingress by identifying different types of duplicate genes in 141 plant genomes, including pears, and revealed the general law of the evolution of duplicate genes.
the results were recently published online in the prestigious academic journal Genomic Biology.
previous studies have found that some plants have the ability to replicate their own genes.
gene replication, plants not only resist complex and volatile environments, but also increase the chances of evolutionary variation.
in recent years, more and more plant genomes have been deciphered.
has now completed genome-wide sequencing of more than 200 plants.
, however, there is still a lack of a widely applicable method for identifying duplicate genes in different species of plants.
the team developed a universally applicable bioinformatics method for identifying duplicate genes in the genomes of different species of plants on the basis of the systematic identification of duplicate genes in the pear genome.
their in-depth analysis found that during the plant's long evolutionary process, gene series replication and adjacent replication maintained a high frequency of occurrence, providing a constant source of genetic variation for plants to adapt to complex and changing external environments.
also, in a relatively short period of time after the genome doubles, a high frequency gene replacement occurs between duplicate genes, and over time, a wide range of space-time expression differentiation occurs between duplicate genes.
in addition, the team built the world's first database of plant repeat ingested genes through large-scale collection and integration of plant genome data resources at home and abroad, which now includes 141 plants that have completed genome sequencing and will expand into all plant-related categories.
database will provide valuable data resources for further study of the evolutionary mechanisms of duplicate genes.
Source: Science Daily.