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Beijing Agricultural College、A team from the Institute of Biotechnology of the Chinese Academy of Agricultural Sciences has drawn a high-quality genome map of Chinese water leek for the first time，This is also the first tetraploid genome reported to be assembled at the chromosome level of a non-seed plant，This study provides an important basis for further analysis of the evolution and environmental adaptability of lycophytes and the protection of Chinese water leek。

Recently，The related research is titled "Revealing the evolution and adaptability of lycophytes through the tetraploid Chinese water leek genome at the chromosome level"，Published in the academic journal "Gigabit Science"。

Chinese water leek. Photo courtesy of the research team

Genome map of Chinese water leek. Photo courtesy of the research team

The Chinese water leek is considered the "giant panda of the plant world"，is the first batch of Class I key protected bet365 online betting appwild plants announced in my country，It is also a lycophyte plant unique to China。Among all vascular plant groups，Lycophytes have the longest evolutionary history，To Earth’s Biodiversity、Soil formation and carbon dioxide fixation have an important impact。However，Compared to seed plants，The distribution area of ​​lycopods has been greatly reduced，Several species of Lycopodium are on the verge of extinction。Chinese water leek is an ancient tetraploid (2n = 4x = 44) aquatic lycophyte。Chinese water leek was once widely distributed，But it has now disappeared from most of its habitat。Drawing of the genome map of Chinese water leek，In-depth understanding of the evolution and environmental adaptability of lycophytes，And it is of great significance to the protection of Chinese water leek。

This research combines the second generation、Three-generation genome sequencing and Hi-C data，Assembled containing 22 chromosomes 2.13 Gigabit Chinese water leek tetraploid genome，its scaffold N50 reaches 86.66 MB。Comparative analysis with the closely related diploid Taiwan water leek，Revealed the characteristics of the tetraploid genome and polyploidy of Lycopodium lycopersicum and the similarities and differences in the sedum acid metabolism bet365 online sports betting mobilepathway and stomatal development of Chinese water leek and Taiwan water leek。Through comparative analysis with evolutionarily representative species，Discover some common genetic regulatory characteristics of Chinese water leek，such as transcriptional regulation、Abscisic acid、Cytokinin、Ethylene、Jasmonic acid and gibberellin signaling pathways, etc.。On the other hand，Some involved strigolactones were also found、Salicylic acid metabolism and stress response (cold、Drought、Important genes related to salinity and cadmium，"Lost" in Chinese water leek and many lycophytes。These findings provide new insights into the development of lycophyte plants and their adaptability to adverse stress，Provides important information for the protection of Chinese water leek。

It is reported，Beijing Agricultural College is the first completing unit，Cui Jinteng, a senior experimentalist bet365 live casino reviewino blackjackat the School of Landscape Architecture, Beijing Agricultural University, and Zhu Yunke, a visiting graduate student at the Institute of Biotechnology, Chinese Academy of Agricultural Sciences, are the first authors of the paper，Liang Zhe, a researcher at the Institute of Biotechnology, Chinese Academy of Agricultural Sciences, is the corresponding author of the paper，Sisi Qian, an undergraduate at the School of Landscape Architecture, Beijing Agricultural University、Wang Zhuoxin、Cui Wenwen participated in this research work。

Related paper information:https://doi.org/10.1093/gigascience/giad079

https://news.sciencenet.cn/htmlnews/2023/10/510559.shtm