Perspectives on Low Temperature Tolerance and Vernalization Sensitivity in Barley: Prospects for Facultative Growth Habit

Frontiers in Plant Science

Scott Fisk¹  Gongshe Hu²  Ernesto Igartua³  Toshiki Nakamura⁴  Kazuhiro Sato⁵  Kevin Smith⁶  Eric Stockinger⁷  William Thomas⁸  Patrick Hayes⁹  Alfonso Cuesta-Marcos^1,10  Ildiko Karsai^1,11  Ana Casas^1,11  P. Stephen Baenziger^1,12  Markus Herz^1,13  Dustin Herb^1,13  Javier Hernandez^1,13  Amelie Genty^1,13  María Muñoz-Amatriaín^1,14  Flavio Capettini^1,15  Anne Marie Bochard^1,16  Claus Einfeldt^1,17  Laura Helgerson^1,18 

[1] Co. KG, Irlbach, Germany;0Bavarian State Research Center for Agriculture, Institute for Crop Science, Freising, Germany;1United States Department of Agriculture-Agricultural Research Service (USDA-ARS), Aberdeen, ID, United States;2Department of Molecular Breeding, Center for Agricultural Research, Martonvásár, Hungary;3Division of Field Crops and Horticulture Research Tohoku Agricultural Research Center National Agriculture and Food Research Organization (NARO), Morioka, Japan;4Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan;5Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN, United States;6Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center (OARDC), Wooster, OH, United States;7The James Hutton Institute (JHI), Invergowrie, United Kingdom;Bayer – Crop Science, Woodland, CA, United States;Consejo Superior de Investigaciones Científicas (CSIC), Aula Dei Experimental Station, Zaragoza, Spain;Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, United States;Department of Crop and Soil Science, Oregon State University, Corvallis, OR, United States;Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, United States;Field Crop Development Centre, Alberta Agriculture and Forestry, Lacombe, AB, Canada;Limagrain Europe, Clermont-Ferrand, France;;Saatzucht Ackermann GmbH &Secobra Recherches, Centre de Bois Henry, Maule, France;

关键词: barley;    low temperature tolerance;    GWAS;    meta-analysis;    facultative;    multi-environments;   

DOI  :  10.3389/fpls.2020.585927

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown