RRC ID 58934
Author Bustos-Korts D, Dawson IK, Russell J, Tondelli A, Guerra D, Ferrandi C, Strozzi F, Nicolazzi EL, Molnar-Lang M, Ozkan H, Megyeri M, Miko P, Çakır E, Yakışır E, Trabanco N, Delbono S, Kyriakidis S, Booth A, Cammarano D, Mascher M, Werner P, Cattivelli L, Rossini L, Stein N, Kilian B, Waugh R, van Eeuwijk FA.
Title Exome sequences and multi-environment field trials elucidate the genetic basis of adaptation in barley.
Journal Plant J
Abstract Broadening the genetic base of crops is crucial for developing varieties to respond to global agricultural challenges such as climate change. Here, we analysed a diverse panel of 371 domesticated lines of the model crop barley to explore the genetics of crop adaptation. We first collected exome sequence data and phenotypes of key life history traits from contrasting multi-environment common garden trials. Then we applied refined statistical methods, including some based on exomic haplotype states, for genotype-by-environment (G×E) modelling. Sub-populations defined from exomic profiles were coincident with barley's biology, geography and history, and explained a high proportion of trial phenotypic variance. Clear G×E interactions indicated adaptation profiles that varied for landraces and cultivars. Exploration of circadian clock-related genes, associated with the environmentally adaptive days to heading trait (crucial for the crop's spread from the Fertile Crescent), illustrated complexities in G×E effect directions, and the importance of latitudinally based genic context in the expression of large-effect alleles. Our analysis supports a gene-level scientific understanding of crop adaption and leads to practical opportunities for crop improvement, allowing the prioritisation of genomic regions and particular sets of lines for breeding efforts seeking to cope with climate change and other stresses.
Volume 99(6)
Pages 1172-1191
Published 2019-9-1
DOI 10.1111/tpj.14414
PMID 31108005
PMC PMC6851764
MeSH Acclimatization / genetics* Circadian Clocks / genetics Crops, Agricultural / genetics* Exome* Exome Sequencing Genetic Variation Genome-Wide Association Study Genotype Geography Haplotypes Hordeum / genetics* Linkage Disequilibrium Phenotype Plant Breeding Polymorphism, Single Nucleotide Quantitative Trait Loci
IF 6.141
Times Cited 4
Barley Core Collection barley accessions