AUTHOR=Zheng Si-hao , Diao Yong-chao , Du Jie , Li Jin-tong , Zhao Sha , Liu Mei-juan , Lin Hui-cai , Zeng Yan , Wang Ji-yong 

TITLE=Genomics and resequencing of Fagopyrum dibotrys from different geographic regions reveals species evolution and genetic diversity

JOURNAL=Frontiers in Plant Science

VOLUME=15

YEAR=2024

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1380157

DOI=10.3389/fpls.2024.1380157

ISSN=1664-462X

ABSTRACT=<p><italic>Fagopyrum dibotrys</italic>, belonging to the family <italic>Polygonaceae</italic> and genus <italic>Fagopyrum</italic>, is used in traditional Chinese medicine and is rich in beneficial components, such as flavonoids. As its abundant medicinal value has become increasingly recognized, its excessive development poses a considerable challenge to wild germplasm resources, necessitating artificial cultivation and domestication. Considering these factors, a high-quality genome of <italic>F. dibotrys</italic> was assembled and the evolutionary relationships within <italic>Caryophyllales</italic> were compared, based on which 58 individual samples of <italic>F. dibotrys</italic> were re-sequenced. We found that the samples could be categorized into three purebred populations and regions distributed at distinct elevations. Our varieties were cultivated from the parental populations of the subpopulation in central Yunnan. <italic>F. dibotrys</italic> is speculated to have originated in the high-altitude Tibetan Plateau region, and that its combination with flavonoids can protect plants against ultraviolet radiation; this infers a subpopulation with a high accumulation of flavonoids. This study assembled a high-quality genome and provided a theoretical foundation for the future introduction, domestication, and development of cultivated varieties of <italic>F. dibotrys</italic>.</p>