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BioMed Central, BMC Plant Biology, 1(15), 2015

DOI: 10.1186/s12870-015-0550-1

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Transcriptionally active LTR retrotransposons in Eucalyptus genus are differentially expressed and insertionally polymorphic

Journal article published in 2015 by Helena Sanches Marcon, Douglas Silva Domingues ORCID, Juliana Costa Silva, Rafael Junqueira Borges, Fábio Filippi Matioli, Marcos Roberto de Mattos Fontes, Marcos Roberto de Mattos Fontes, Celso Luis Marino
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract Background In Eucalyptus genus, studies on genome composition and transposable elements (TEs) are particularly scarce. Nearly half of the recently released Eucalyptus grandis genome is composed by retrotransposons and this data provides an important opportunity to understand TE dynamics in Eucalyptus genome and transcriptome. Results We characterized nine families of transcriptionally active LTR retrotransposons from Copia and Gypsy superfamilies in Eucalyptus grandis genome and we depicted genomic distribution and copy number in two Eucalyptus species. We also evaluated genomic polymorphism and transcriptional profile in three organs of five Eucalyptus species. We observed contrasting genomic and transcriptional behavior in the same family among different species. RLC_ egMax _1 was the most prevalent family and RLC_ egAngela _1 was the family with the lowest copy number. Most families of both superfamilies have their insertions occurring