ArticleBMC plant biology2019
Fine-tuning of the flowering time control in winter barley: the importance of HvOS2 and HvVRN2 in non-inductive conditions.
Article in BMC plant biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 17 citations in OpenAlex.
- Vernalization regulatory network identifies potential novel functions for genes in the HvVRN2 locus.The New phytologist · 2026Article
- On the origin of the late-flowering ppd-H1 allele in barley.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- TheCells · 2023Review
- Hybrids Provide More Options for Fine-Tuning Flowering Time Responses of Winter Barley.Frontiers in plant science · 2022Article
- Major flowering time genes of barley: allelic diversity, effects, and comparison with wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Review
- Responses of Barley to High Ambient Temperature Are Modulated by Vernalization.Frontiers in plant science · 2021Article
- Genetic and Management Effects on Barley Yield and Phenology in the Mediterranean Basin.Frontiers in plant science · 2021Article
- Genetic diversity in developmental responses to light spectral quality in barley (Hordeum vulgare L.).BMC plant biology · 2020Article
- The Role ofFrontiers in plant science · 2020Review
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundIn winter barley plants, vernalization and photoperiod cues have to be integrated to promote flowering. Plant development and expression of different flowering promoter (HvVRN1, HvCO2, PPD-H1, HvFT1, HvFT3) and repressor (HvVRN2, HvCO9 and HvOS2) genes were evaluated in two winter barley varieties under: (1) natural increasing photoperiod, without vernalization, and (2) under short day conditions in three insufficient vernalization treatments. These challenging conditions were chosen to capture non-optimal and natural responses, representative of those experienced in the Mediterranean area.
resultsIn absence of vernalization and under increasing photoperiods, HvVRN2 expression increased with day-length, mainly between 12 and 13 h photoperiods in our latitudes. The flowering promoter gene in short days, HvFT3, was only expressed after receiving induction of cold or plant age, which was associated with low transcript levels of HvVRN2 and HvOS2. Under the sub-optimal conditions here described, great differences in development were found between the two winter barley varieties used in the study. Delayed development in 'Barberousse' was associated with increased expression levels of HvOS2. Novel variation for HvCO9 and HvOS2 is reported and might explain such differences.
conclusionsThe balance between the expression of flowering promoters and repressor genes regulates the promotion towards flowering or the maintenance of the vegetative state. HvOS2, an ortholog of FLC, appears as a strong candidate to mediate in the vernalization response of barley. Natural variation found would help to exploit the plasticity in development to obtain better-adapted varieties for current and future climate conditions.
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