首页|A Chromosome-level Reference Genome of African Oil Palm Provides Insights into Its Divergence and Stress Adaptation

A Chromosome-level Reference Genome of African Oil Palm Provides Insights into Its Divergence and Stress Adaptation

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The palm family(Arecaceae),consisting of～2600 species,is the third most economically important family of plants.The African oil palm(Elaeis guineensis)is one of the most important palms.However,the genome sequences of palms that are currently available are still limited and fragmented.Here,we report a high-quality chromosome-level reference genome of an oil palm,Dura,assembled by integrating long reads with～150x genome coverage.The assembled genome was 1.7 Gb in size,covering 94.5％of the estimated genome,of which 91.6％was assigned into 16 pseudochromosomes and 73.7％was repetitive sequences.Relying on the conserved synteny with oil palm,the existing draft genome sequences of both date palm and coconut were further assem-bled into chromosomal level.Transposon burst,particularly long terminal repeat retrotransposons,following the last whole-genome duplication,likely explains the genome size variation across palms.Sequence analysis of the VIRESCENS gene in palms suggests that DNA variations in this gene are related to fruit colors.Recent duplications of highly tandemly repeated pathogenesis-related pro-teins from the same tandem arrays play an important role in defense responses to Ganoderma.Whole-genome resequencing of both ancestral African and introduced oil palms in Southeast Asia reveals that genes under putative selection are notably associated with stress responses,suggesting adaptation to stresses in the new habitat.The genomic resources and insights gained in this study could be exploited for accelerating genetic improvement and understanding the evolution of palms.

Oil palmGenomeEvolutionVIRESCENSMolecular breeding

Le Wang、May Lee、Zi Yi Wan、Bin Bai、Baoqing Ye、Yuzer Alfiko、Rahmadsyah Rahmadsyah、Sigit Purwantomo、Zhuojun Song、Antonius Suwanto、Gen Hua Yue

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Temasek Life Sciences Laboratory,Singapore 117604,Singapore

Wheat Research Institute,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China

Biotech Lab,Wilmar International,Bekasi 17530,Indonesia

R & D Department,Wilmar International Plantation,Palembang 30118,Indonesia

Department of Biological Sciences,National University of Singapore,Singapore 117558,Singapore

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Internal Funds of the Temasek Life Sciences Laboratory,SingaporeWilmar International,Singapore

50209200

2023

10.1016/j.gpb.2022.11.002

基因组蛋白质组与生物信息学报(英文版)
中国科学院北京基因组研究所

基因组蛋白质组与生物信息学报(英文版)

CSTPCDCSCD
影响因子：0.495
ISSN：1672-0229
年,卷(期)：2023.21(3)
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