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Pests, diseases, and aridity have shaped the genome of Corymbia citriodora


Healey, AL and Shepherd, M and King, GJ and Butler, JB and Freeman, JS and Lee, DJ and Potts, BM and Silva-Junior, OB and Baten, A and Jenkins, J and Shu, S and Lovell, JT and Sreedasyam, A and Grimwood, J and Furtado, A and Grattapaglia, D and Barry, KW and Hundley, H and Simmons, BA and Schmutz, J and Vaillancourt, RE and Henry, RJ, Pests, diseases, and aridity have shaped the genome of Corymbia citriodora, Communications Biology, 4, (1) Article 537. ISSN 2399-3642 (2021) [Refereed Article]

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The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

DOI: doi:10.1038/s42003-021-02009-0


Corymbia citriodora is a member of the predominantly Southern Hemisphere Myrtaceae family, which includes the eucalypts (Eucalyptus, Corymbia and Angophora; ~800 species). Corymbia is grown for timber, pulp and paper, and essential oils in Australia, South Africa, Asia, and Brazil, maintaining a high-growth rate under marginal conditions due to drought, poor-quality soil, and biotic stresses. To dissect the genetic basis of these desirable traits, we sequenced and assembled the 408 Mb genome of Corymbia citriodora, anchored into eleven chromosomes. Comparative analysis with Eucalyptus grandis reveals high synteny, although the two diverged approximately 60 million years ago and have different genome sizes (408 vs 641 Mb), with few large intra-chromosomal rearrangements. C. citriodora shares an ancient whole-genome duplication event with E. grandis but has undergone tandem gene family expansions related to terpene biosynthesis, innate pathogen resistance, and leaf wax formation, enabling their successful adaptation to biotic/abiotic stresses and arid conditions of the Australian continent.

Item Details

Item Type:Refereed Article
Keywords:Corymbia, eucalypt, genome assembly
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Genomics
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Butler, JB (Dr Jakob Butler)
UTAS Author:Freeman, JS (Dr Jules Freeman)
UTAS Author:Potts, BM (Professor Brad Potts)
UTAS Author:Vaillancourt, RE (Professor Rene Vaillancourt)
ID Code:144597
Year Published:2021
Web of Science® Times Cited:2
Deposited By:Plant Science
Deposited On:2021-05-28
Last Modified:2021-06-03
Downloads:18 View Download Statistics

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