Responses of Barley to High Ambient Temperature Are Modulated by Vernalization
Open Access
- 25 January 2022
- journal article
- research article
- Published by Frontiers Media SA in Frontiers in Plant Science
- Vol. 12, 776982
- https://doi.org/10.3389/fpls.2021.776982
Abstract
Ambient temperatures are increasing due to climate change. Cereal crops development and production will be affected consequently. Flowering time is a key factor for adaptation of small grain cereals and, therefore, exploring developmental responses of barley to rising temperatures is required. In this work, we studied phasic growth, and inflorescence traits related to yield, in eight near isogenic lines of barley (Hordeum vulgare L.) differing at the VRN-H1, VRN-H2 and PPD-H1 genes, representing different growth habits. The lines were grown in contrasting vernalization treatments, under two temperature regimes (18 and 25°C), in long days. Lines with recessive ppd-H1 presented delayed development compared to lines with the sensitive PPD-H1 allele, across the two growth phases considered. High temperature delayed flowering in all unvernalized plants, and in vernalized spring barleys carrying the insensitive ppd-H1 allele, whilst it accelerated flowering in spring barleys with the sensitive PPD-H1 allele. This finding evidenced an interaction between PPD-H1, temperature and vernalization. At the high temperature, PPD-H1 lines in spring backgrounds (VRN-H1-7) yielded more, whereas lines with ppd-H1 were best in vrn-H1 background. Our study revealed new information that will support breeding high-yielding cultivars with specific combinations of major adaptation genes tailored to future climatic conditions.Funding Information
- Ministerio de Economía, Industria y Competitividad, Gobierno de España
- Agencia Estatal de Investigación
- Gobierno de Aragón (A08_17R)
- Ministerio de Ciencia, Innovación y Universidades
- Nemzetgazdasági Minisztérium
This publication has 60 references indexed in Scilit:
- Low temperatures induce rapid changes in chromatin state and transcript levels of the cereal VERNALIZATION1 geneJournal of Experimental Botany, 2013
- Expression conservation within the circadian clock of a monocot: natural variation at barley Ppd-H1affects circadian expression of flowering time genes, but not clock orthologsBMC Plant Biology, 2012
- Identification of High-Temperature-Responsive Genes in CerealsPlant Physiology, 2012
- Evolutionary history of barley cultivation in Europe revealed by genetic analysis of extant landracesBMC Evolutionary Biology, 2011
- Expression analysis of vernalization and day-length response genes in barley (Hordeum vulgare L.) indicates that VRNH2 is a repressor of PPDH2 (HvFT3) under long daysJournal of Experimental Botany, 2010
- Molecular and Functional Characterization of PEBP Genes in Barley Reveal the Diversification of Their Roles in FloweringPlant Physiology, 2009
- Effects of photo and thermo cycles on flowering time in barley: a genetical phenomics approachJournal of Experimental Botany, 2008
- Low-Temperature and Daylength Cues Are Integrated to Regulate FLOWERING LOCUS T in BarleyPlant Physiology, 2008
- TheFLOWERING LOCUS T-Like Gene Family in Barley (Hordeum vulgare)Genetics, 2007
- The wheat and barley vernalization gene VRN3 is an orthologue of FTProceedings of the National Academy of Sciences of the United States of America, 2006