Chromosome-scale assemblies of S. malaccense, S. aqueum, S. jambos, and S. syzygioides provide insights into the evolution of Syzygium genomes

Frontiers in Plant Science

Plant Science

Felix Kessler¹  Nikolai V. Ivanov²  Sonia Ouadi²  Nicolas Sierro³ 

[1] Faculty of Sciences, Laboratory of Plant Physiology, University of Neuchâtel, Neuchâtel, Switzerland;Faculty of Sciences, Laboratory of Plant Physiology, University of Neuchâtel, Neuchâtel, Switzerland;Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland;Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland;

关键词: Syzygium;    Myrtaceae;    de novo;    comparative genomics;    synteny;    long terminal repeat retrotransposons;   

DOI  :  10.3389/fpls.2023.1248780

 received in 2023-06-27, accepted in 2023-08-28,  发布年份 2023

来源: Frontiers

【 摘 要 】

Syzygium is a large and diverse tree genus in the Myrtaceae family. Genome assemblies for clove (Syzygium aromaticum, 370 Mb) and sea apple (Syzygium grande, 405 Mb) provided the first insights into the genomic features and evolution of the Syzygium genus. Here, we present additional de novo chromosome-scale genome assemblies for Syzygium malaccense, Syzygium aqueum, Syzygium jambos, and Syzygium syzygioides. Genome profiling analyses show that S. malaccense, like S. aromaticum and S. grande, is diploid (2n = 2x = 22), while the S. aqueum, S. jambos, and S. syzygioides specimens are autotetraploid (2n = 4x = 44). The genome assemblies of S. malaccense (430 Mb), S. aqueum (392 Mb), S. jambos (426 Mb), and S. syzygioides (431 Mb) are highly complete (BUSCO scores of 98%). Comparative genomics analyses showed conserved organization of the 11 chromosomes with S. aromaticum and S. grande, and revealed species-specific evolutionary dynamics of the long terminal repeat retrotransposon elements belonging to the Gypsy and Copia lineages. This set of Syzygium genomes is a valuable resource for future structural and functional comparative genomic studies on Myrtaceae species.

【 授权许可】

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Copyright © 2023 Ouadi, Sierro, Kessler and Ivanov