State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Published Important Results of

time: 2018-01-05   author:   clicks: 79

On November 27th, The Plant Journal, a well-known international journal of botany, published the research papers on plant DNA methylation and gene evolution by the State Key Laboratory of Crop Pest Ecology Prevention and Control of Fujian and Taiwan, Youth PI, Wang Haifeng Group of Plant Protection College : Comparative epigenomics reveals evolution of duplicated genes in potato and tomato.

The study was completed under the guidance of Wang Haifeng, and combined with Northeast Agricultural University, Shenzhen University and Zhejiang Agricultural University, a number of units. Fujian Agriculture and Forestry University as the first author unit and correspondence author unit, Wang Lin, Xie Jiahui and Hu Jian of Plant Protection College were co-authors.

DNA methylation is one of the most important epigenetic modifications, with important functions of inhibiting transposon activity and regulating gene expression. Plant genomes often retain large numbers of multicopy genes due to multiple genome-wide duplication events. Whether these multi-copy gene functional differentiations are regulated by DNA methylation is unclear. The study compared DNA methylation in multicopy genes that was doubled in the ancestral genome of potato and tomato and found that DNA methylation is conserved both in orthologous and paralogous genes, especially in the CG form Based on. At the same time, it was found that multiple copies of genes with different DNA methylation are often associated with transcriptional differences, suggesting that DNA methylation plays a role in the regulation of multi-copy gene functional differentiation. At the same time, the study also found that transcription factors in tomato fruit ripening process are also regulated by DNA methylation, pointing out that DNA methylation can regulate important developmental processes by affecting multiple copies of transcription factor, such as tomato fruit ripening process .

The research was funded by the National Natural Science Foundation of China, the Outstanding Young Persons Cultivation Program of Fujian Province and the New Century Talents Program, and the start-up funding of the Plant Protection Academy.