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Genetic control of heterochrony in Eucalyptus globulus


Hudson, CJ and Freeman, JS and Jones, RC and Potts, BM and Wong, MML and Weller, JL and Hecht, VFG and Poethig, RS and Vaillancourt, RE, Genetic control of heterochrony in Eucalyptus globulus, G3: Genes, Genomes, Genetics, 4, (7) pp. 1235-1245. ISSN 2160-1836 (2014) [Refereed Article]


Copyright Statement

Copyright 2014 Hudson et al. Licenced under Creative Commons Attribution 3.0 Unported (CC BY 3.0)

DOI: doi:10.1534/g3.114.011916


A change in the timing or rate of developmental events throughout ontogeny is referred to as heterochrony, and it is a major evolutionary process in plants and animals. We investigated the genetic basis for natural variation in the timing of vegetative phase change in the tree Eucalyptus globulus, which undergoes a dramatic change in vegetative morphology during the juvenile-to-adult transition. Quantitative trait loci analysis in an outcross F2 family derived from crosses between individuals from a coastal population of E. globulus with precocious vegetative phase change and individuals from populations in which vegetative phase change occurs several years later implicated the microRNA EglMIR156.5 as a potential contributor to this heterochronic difference. Additional evidence for the involvement of EglMIR156.5 was provided by its differential expression in trees with early and late phase change. Our findings suggest that changes in the expression of miR156 underlie natural variation in vegetative phase change in E. globulus, and may also explain interspecific differences in the timing of this developmental transition.

Item Details

Item Type:Refereed Article
Keywords:QTL, microRNA, eucalypts, heterochrony, adaptation
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Gene mapping
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Native forests
UTAS Author:Hudson, CJ (Dr Corey Hudson)
UTAS Author:Freeman, JS (Dr Jules Freeman)
UTAS Author:Jones, RC (Dr Rebecca Jones)
UTAS Author:Potts, BM (Professor Brad Potts)
UTAS Author:Weller, JL (Associate Professor Jim Weller)
UTAS Author:Hecht, VFG (Dr Valerie Hecht)
UTAS Author:Vaillancourt, RE (Professor Rene Vaillancourt)
ID Code:96035
Year Published:2014
Web of Science® Times Cited:27
Deposited By:Plant Science
Deposited On:2014-10-16
Last Modified:2017-11-03
Downloads:399 View Download Statistics

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