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Genetic control of cuticular wax compounds in Eucalyptus globulus.
New Phytol. 2016 Jan; 209(1):202-15.NP

Abstract

Plant cuticular wax compounds perform functions that are essential for the survival of terrestrial plants. Despite their importance, the genetic control of these compounds is poorly understood outside of model taxa. Here we investigate the genetic basis of variation in cuticular compounds in Eucalyptus globulus using quantitative genetic and quantitative trait loci (QTL) analyses. Quantitative genetic analysis was conducted using 246 open-pollinated progeny from 13 native sub-races throughout the geographic range. QTL analysis was conducted using 112 clonally replicated progeny from an outcross F2 population. Nine compounds exhibited significant genetic variation among sub-races with three exhibiting signals of diversifying selection. Fifty-two QTL were found with co-location of QTL for related compounds commonly observed. Notable among these was the QTL for five wax esters, which co-located with a gene from the KCS family, previously implicated in the biosynthesis of cuticular waxes in Arabidopsis. In combination, the QTL and quantitative genetic analyses suggest the variation and differentiation in cuticular wax compounds within E. globulus has a complex genetic origin. Sub-races exhibited independent latitudinal and longitudinal differentiation in cuticular wax compounds, likely reflecting processes such as historic gene flow and diversifying selection acting upon genes that have diverse functions in distinct biochemical pathways.

Authors+Show Affiliations

School of Biological Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.School of Biological Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.School of Biological Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.School of Biological Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.School of Biological Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.Central Science Laboratory, University of Tasmania, Private Bag 74, Hobart, TAS, 7001, Australia.School of Biological Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26262563

Citation

Gosney, Benjamin J., et al. "Genetic Control of Cuticular Wax Compounds in Eucalyptus Globulus." The New Phytologist, vol. 209, no. 1, 2016, pp. 202-15.
Gosney BJ, Potts BM, O'Reilly-Wapstra JM, et al. Genetic control of cuticular wax compounds in Eucalyptus globulus. New Phytol. 2016;209(1):202-15.
Gosney, B. J., Potts, B. M., O'Reilly-Wapstra, J. M., Vaillancourt, R. E., Fitzgerald, H., Davies, N. W., & Freeman, J. S. (2016). Genetic control of cuticular wax compounds in Eucalyptus globulus. The New Phytologist, 209(1), 202-15. https://doi.org/10.1111/nph.13600
Gosney BJ, et al. Genetic Control of Cuticular Wax Compounds in Eucalyptus Globulus. New Phytol. 2016;209(1):202-15. PubMed PMID: 26262563.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Genetic control of cuticular wax compounds in Eucalyptus globulus. AU - Gosney,Benjamin J, AU - Potts,Brad M, AU - O'Reilly-Wapstra,Julianne M, AU - Vaillancourt,René E, AU - Fitzgerald,Hugh, AU - Davies,Noel W, AU - Freeman,Jules S, Y1 - 2015/08/11/ PY - 2015/03/13/received PY - 2015/07/08/accepted PY - 2015/8/12/entrez PY - 2015/8/12/pubmed PY - 2016/9/28/medline KW - Eucalyptus globulus KW - cuticular wax compounds KW - extended phenotype KW - flavonoids KW - quantitative genetics KW - quantitative trait loci (QTL) SP - 202 EP - 15 JF - The New phytologist JO - New Phytol. VL - 209 IS - 1 N2 - Plant cuticular wax compounds perform functions that are essential for the survival of terrestrial plants. Despite their importance, the genetic control of these compounds is poorly understood outside of model taxa. Here we investigate the genetic basis of variation in cuticular compounds in Eucalyptus globulus using quantitative genetic and quantitative trait loci (QTL) analyses. Quantitative genetic analysis was conducted using 246 open-pollinated progeny from 13 native sub-races throughout the geographic range. QTL analysis was conducted using 112 clonally replicated progeny from an outcross F2 population. Nine compounds exhibited significant genetic variation among sub-races with three exhibiting signals of diversifying selection. Fifty-two QTL were found with co-location of QTL for related compounds commonly observed. Notable among these was the QTL for five wax esters, which co-located with a gene from the KCS family, previously implicated in the biosynthesis of cuticular waxes in Arabidopsis. In combination, the QTL and quantitative genetic analyses suggest the variation and differentiation in cuticular wax compounds within E. globulus has a complex genetic origin. Sub-races exhibited independent latitudinal and longitudinal differentiation in cuticular wax compounds, likely reflecting processes such as historic gene flow and diversifying selection acting upon genes that have diverse functions in distinct biochemical pathways. SN - 1469-8137 UR - https://www.unboundmedicine.com/medline/citation/26262563/Genetic_control_of_cuticular_wax_compounds_in_Eucalyptus_globulus_ L2 - https://doi.org/10.1111/nph.13600 DB - PRIME DP - Unbound Medicine ER -