The genome of Prunus humilis provides new insights to drought adaption and population diversity.

Prunus humilis (2n = 2x = 16) is a dwarf shrub fruit tree native to China and distributed widely in the cold and arid northern region. In this study, we obtained the whole genome sequences of P. humilis by combining Illumina, PacBio and HiC sequencing technologies. This genome was 254.38 Mb long and encodes 28,301 putative proteins. Phylogenetic analysis indicated that P. humilis shares the same ancestor with Prunus mume and Prunus armeniaca at ∼ 29.03 Mya. Gene expansion analysis implied that the expansion of WAX-related and LEA genes might be associated with high drought tolerance of P. humilis and LTR maybe one of the driver factors for the drought adaption by increase the copy number of LEAs. Population diversity analysis among 20 P. humilis accessions found that the genetic diversity of P. humilis populations was limited, only 1.40% base pairs were different with each other, and more wild resources need to be collected and utilized in the breeding and improvement. This study provides new insights to the drought adaption and population diversity of P. humilis that could be used as a potential model plant for horticultural research. © The Author(s) 2022. Published by Oxford University Press on behalf of Kazusa DNA Research Institute.

Citation

Yi Wang, Jun Xie, Hongna Zhang, Weidong Li, Zhanjun Wang, Huayang Li, Qian Tong, Gaixia Qiao, Yujuan Liu, Ying Tian, Yongzan Wei, Ping Li, Rong Wang, Weiping Chen, Zhengchang Liang, Meilong Xu. The genome of Prunus humilis provides new insights to drought adaption and population diversity. DNA research : an international journal for rapid publication of reports on genes and genomes. 2022 Jun 25;29(4)

Mesh Tags

PMID: 35751601

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