TY - JOUR
T1 - Perspectives on Low Temperature Tolerance and Vernalization Sensitivity in Barley
T2 - Prospects for Facultative Growth Habit
AU - Muñoz-Amatriaín, María
AU - Hernandez, Javier
AU - Herb, Dustin
AU - Baenziger, P. Stephen
AU - Bochard, Anne Marie
AU - Capettini, Flavio
AU - Casas, Ana
AU - Cuesta-Marcos, Alfonso
AU - Einfeldt, Claus
AU - Fisk, Scott
AU - Genty, Amelie
AU - Helgerson, Laura
AU - Herz, Markus
AU - Hu, Gongshe
AU - Igartua, Ernesto
AU - Karsai, Ildiko
AU - Nakamura, Toshiki
AU - Sato, Kazuhiro
AU - Smith, Kevin
AU - Stockinger, Eric
AU - Thomas, William
AU - Hayes, Patrick
N1 - Funding Information:
Support was provided by the USDA-NIFA TCAP Project no. 2011-68002-30029.
Publisher Copyright:
© Copyright © 2020 Muñoz-Amatriaín, Hernandez, Herb, Baenziger, Bochard, Capettini, Casas, Cuesta-Marcos, Einfeldt, Fisk, Genty, Helgerson, Herz, Hu, Igartua, Karsai, Nakamura, Sato, Smith, Stockinger, Thomas and Hayes.
PY - 2020/11/9
Y1 - 2020/11/9
N2 - One option to achieving greater resiliency for barley production in the face of climate change is to explore the potential of winter and facultative growth habits: for both types, low temperature tolerance (LTT) and vernalization sensitivity are key traits. Sensitivity to short-day photoperiod is a desirable attribute for facultative types. In order to broaden our understanding of the genetics of these phenotypes, we mapped quantitative trait loci (QTLs) and identified candidate genes using a genome-wide association studies (GWAS) panel composed of 882 barley accessions that was genotyped with the Illumina 9K single-nucleotide polymorphism (SNP) chip. Fifteen loci including 5 known and 10 novel QTL/genes were identified for LTT—assessed as winter survival in 10 field tests and mapped using a GWAS meta-analysis. FR-H1, FR-H2, and FR-H3 were major drivers of LTT, and candidate genes were identified for FR-H3. The principal determinants of vernalization sensitivity were VRN-H1, VRN-H2, and PPD-H1. VRN-H2 deletions conferred insensitive or intermediate sensitivity to vernalization. A subset of accessions with maximum LTT were identified as a resource for allele mining and further characterization. Facultative types comprised a small portion of the GWAS panel but may be useful for developing germplasm with this growth habit.
AB - One option to achieving greater resiliency for barley production in the face of climate change is to explore the potential of winter and facultative growth habits: for both types, low temperature tolerance (LTT) and vernalization sensitivity are key traits. Sensitivity to short-day photoperiod is a desirable attribute for facultative types. In order to broaden our understanding of the genetics of these phenotypes, we mapped quantitative trait loci (QTLs) and identified candidate genes using a genome-wide association studies (GWAS) panel composed of 882 barley accessions that was genotyped with the Illumina 9K single-nucleotide polymorphism (SNP) chip. Fifteen loci including 5 known and 10 novel QTL/genes were identified for LTT—assessed as winter survival in 10 field tests and mapped using a GWAS meta-analysis. FR-H1, FR-H2, and FR-H3 were major drivers of LTT, and candidate genes were identified for FR-H3. The principal determinants of vernalization sensitivity were VRN-H1, VRN-H2, and PPD-H1. VRN-H2 deletions conferred insensitive or intermediate sensitivity to vernalization. A subset of accessions with maximum LTT were identified as a resource for allele mining and further characterization. Facultative types comprised a small portion of the GWAS panel but may be useful for developing germplasm with this growth habit.
KW - GWAS
KW - barley
KW - facultative
KW - low temperature tolerance
KW - meta-analysis
KW - multi-environments
UR - http://www.scopus.com/inward/record.url?scp=85096441260&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85096441260&partnerID=8YFLogxK
U2 - 10.3389/fpls.2020.585927
DO - 10.3389/fpls.2020.585927
M3 - Article
C2 - 33469459
AN - SCOPUS:85096441260
SN - 1664-462X
VL - 11
JO - Frontiers in Plant Science
JF - Frontiers in Plant Science
M1 - 585927
ER -