Explosive tandem and segmental duplications of multigenic families in Eucalyptus grandis

Genome Biology and Evolution
Qiang LiChristophe Dunand

Abstract

Plant organisms contain a large number of genes belonging to numerous multigenic families whose evolution size reflects some functional constraints. Sequences from eight multigenic families, involved in biotic and abiotic responses, have been analyzed in Eucalyptus grandis and compared with Arabidopsis thaliana. Two transcription factor families APETALA 2 (AP2)/ethylene responsive factor and GRAS, two auxin transporter families PIN-FORMED and AUX/LAX, two oxidoreductase families (ascorbate peroxidases [APx] and Class III peroxidases [CIII Prx]), and two families of protective molecules late embryogenesis abundant (LEA) and DNAj were annotated in expert and exhaustive manner. Many recent tandem duplications leading to the emergence of species-specific gene clusters and the explosion of the gene numbers have been observed for the AP2, GRAS, LEA, PIN, and CIII Prx in E. grandis, while the APx, the AUX/LAX and DNAj are conserved between species. Although no direct evidence has yet demonstrated the roles of these recent duplicated genes observed in E. grandis, this could indicate their putative implications in the morphological and physiological characteristics of E. grandis, and be the key factor for the survival of this nondormant...Continue Reading

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Citations

Jan 23, 2016·Frontiers in Plant Science·Nanette ChristieCarsten Külheim
Mar 19, 2020·Journal of Experimental Botany·Duchesse Lacour Mbadinga MbadingaChristophe Dunand
Oct 27, 2017·Frontiers in Plant Science·Márcio L AumondArthur G Fett-Neto
Jun 20, 2018·Nature Plants·Christophe PlomionJérôme Salse
Jun 29, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Liyan SuQiang Li

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Methods Mentioned

BETA
RNA-seq

Software Mentioned

MapChart
SHORTROOT
SCARECROW
Scipio
BioEdit
PhyML
BIONJ
protTest
TreeDyn
Expander

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