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Flax latitudinal adaptation at LuTFL1 altered architecture and promoted fiber production

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Gutaker , Rafal M. , Zaidem, Maricris, Fu, Yong-Bi , Diederichsen, Axel, Smith, Oliver, Ware, Roselyn and Allaby, Robin G. (2018) Flax latitudinal adaptation at LuTFL1 altered architecture and promoted fiber production. Scientific Reports, 9 (976). doi:10.1038/s41598-018-37086-5

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Official URL: https://doi.org/10.1038/s41598-018-37086-5

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Abstract

After domestication in the Near East around 10,000 years ago several founder crops, flax included, spread to European latitudes. On reaching northerly latitudes the architecture of domesticated flax became more suitable to fiber production over oil, with longer stems, smaller seeds and fewer axillary branches. Latitudinal adaptations in crops typically result in changes in flowering time, often involving the PEBP family of genes that also have the potential to influence plant architecture. Two PEBP family genes in the flax genome, LuTFL1 and LuTFL2, vary in wild and cultivated flax over latitudinal range with cultivated flax receiving LuTFL1 alleles from northerly wild flax populations. Compared to a background of population structure of flaxes over latitude, the LuTFL1 alleles display a level of differentiation that is consistent with selection for an allele III in the north. We demonstrate through heterologous expression in Arabidopsis thaliana that LuTFL1 is a functional homolog of TFL1 in A. thaliana capable of changing both flowering time and plant architecture. We conclude that specialized fiber flax types could have formed as a consequence of a natural adaptation of cultivated flax to higher latitudes.

Item Type: Journal Article
Subjects: Q Science > QK Botany
Divisions: Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH): Flax -- Genetics, Arabidopsis thaliana -- Genetics
Journal or Publication Title: Scientific Reports
Publisher: Nature Publishing Group
ISSN: 2045-2322
Official Date: 30 January 2018
Dates:
DateEvent
30 January 2018Published
2 November 2018Accepted
Volume: 9
Number: 976
DOI: 10.1038/s41598-018-37086-5
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDUniversity of Warwickhttp://dx.doi.org/10.13039/501100000741
NE/L006847/1[NERC] Natural Environment Research Councilhttp://dx.doi.org/10.13039/501100000270
NE/F000391/1[NERC] Natural Environment Research Councilhttp://dx.doi.org/10.13039/501100000270

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