Altered Expression of an FT Cluster Underlies a Major Locus Controlling Domestication-Related Changes to Chickpea Phenology and Growth Habit

Raul Ortega; Valerie F. G. Hecht; Jules S. Freeman; Josefa Rubio; Noelia Carrasquilla-Garcia; Reyazul Rouf Mir; R. Varma Penmetsa; Douglas R. Cook; Teresa Millan; James L. Weller

doi:10.3389/fpls.2019.00824

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Altered Expression of an FT Cluster Underlies a Major Locus Controlling Domestication-Related Changes to Chickpea Phenology and Growth Habit

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Altered Expression of an FT Cluster Underlies a Major Locus Controlling Domestication-Related Changes to Chickpea Phenology and Growth Habit

Raul Ortega, Valerie F. G. Hecht, Jules S. Freeman, Josefa Rubio, Noelia Carrasquilla-Garcia, Reyazul Rouf Mir, R. Varma Penmetsa, Douglas R. Cook, Teresa Millan and James L. Weller

Frontiers in plant science, Vol.10, 824

2019

DOI: https://doi.org/10.3389/fpls.2019.00824

PMID: 31333691

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Abstract

Plant Science

Flowering time is a key trait in breeding and crop evolution, due to its importance for adaptation to different environments and for yield. In the particular case of chickpea, selection for early phenology was essential for the successful transition of this species from a winter to a summer crop. Here, we used genetic and expression analyses in two different inbred populations to examine the genetic control of domestication-related differences in flowering time and growth habit between domesticated chickpea and its wild progenitor Cicer reticulatum. A single major quantitative trait locus for flowering time under short-day conditions [Days To Flower (DTF)3A] was mapped to a 59-gene interval on chromosome three containing a cluster of three FT genes, which collectively showed upregulated expression in domesticated relative to wild parent lines. An equally strong association with growth habit suggests a pleiotropic effect of the region on both traits. These results indicate the likely molecular explanation for the characteristic early flowering of domesticated chickpea, and the previously described growth habit locus Hg. More generally, they point to de-repression of this specific gene cluster as a conserved mechanism for achieving adaptive early phenology in temperate legumes.

Details

Title: Altered Expression of an FT Cluster Underlies a Major Locus Controlling Domestication-Related Changes to Chickpea Phenology and Growth Habit
Authors/Creators: Raul Ortega - University of Tasmania
Valerie F. G. Hecht - , , , , , , , , , , , , , ,
Jules S. Freeman - Scion
Josefa Rubio - Andalusian Institute of Agricultural and Fisheries Research and Training
Noelia Carrasquilla-Garcia - University of California, Davis
Reyazul Rouf Mir - Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir
R. Varma Penmetsa - University of California, Davis
Douglas R. Cook - University of California, Davis
Teresa Millan - University of Córdoba
James L. Weller - University of Tasmania
Publication Details: Frontiers in plant science, Vol.10, 824
Publisher: Frontiers Media S.A.
Identifiers: 991005722669007891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.96 QTL
Web Of Science research areas: Plant Sciences
ESI research areas: Plant & Animal Science