Detection of photoperiod responsive and non-responsive flowering time QTL in barley

Sameri, Mohammad; Pourkheirandish, Mohammad; Chen, Guoxiong; Tonooka, Takuji; Komatsuda, Takao

doi:10.1270/jsbbs.61.183

Cited by 11 publications

(12 citation statements)

References 23 publications

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“…The photoperiod experienced by the plants increased from 12 h 25 min at transplanting to 14 h 53 min when the first genotype reached heading, and then kept increasing until 15 h 58 min on June 21 st . Therefore, most of the growth period of the plants occurred in photoperiods well above 12 h. We observed a concurrent effect of PPDH1 and PPDH2 on flowering, which agrees with the concurrent effect for these two genes found under a 12 h photoperiod [ 38 ]. During this period of the year (May-July), and even earlier, the effect of long days on heading date in experiments carried out in temperate latitudes can be detected through its effect on PPDH1 [ 39 ].…”

Section: Discussionsupporting

confidence: 89%

Adaptation of barley to mild winters: A role for PPDH2

et al. 2011

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BackgroundUnderstanding the adaptation of cereals to environmental conditions is one of the key areas in which plant science can contribute to tackling challenges presented by climate change. Temperature and day length are the main environmental regulators of flowering and drivers of adaptation in temperate cereals. The major genes that control flowering time in barley in response to environmental cues are VRNH1, VRNH2, VRNH3, PPDH1, and PPDH2 (candidate gene HvFT3). These genes from the vernalization and photoperiod pathways show complex interactions to promote flowering that are still not understood fully. In particular, PPDH2 function is assumed to be limited to the ability of a short photoperiod to promote flowering. Evidence from the fields of biodiversity, ecogeography, agronomy, and molecular genetics was combined to obtain a more complete overview of the potential role of PPDH2 in environmental adaptation in barley.ResultsThe dominant PPDH2 allele is represented widely in spring barley cultivars but is found only occasionally in modern winter cultivars that have strong vernalization requirements. However, old landraces from the Iberian Peninsula, which also have a vernalization requirement, possess this allele at a much higher frequency than modern winter barley cultivars. Under field conditions in which the vernalization requirement of winter cultivars is not satisfied, the dominant PPDH2 allele promotes flowering, even under increasing photoperiods above 12 h. This hypothesis was supported by expression analysis of vernalization-responsive genotypes. When the dominant allele of PPDH2 was expressed, this was associated with enhanced levels of VRNH1 and VRNH3 expression. Expression of these two genes is needed for the induction of flowering. Therefore, both in the field and under controlled conditions, PPDH2 has an effect of promotion of flowering.ConclusionsThe dominant, ancestral, allele of PPDH2 is prevalent in southern European barley germplasm. The presence of the dominant allele is associated with early expression of VRNH1 and early flowering. We propose that PPDH2 promotes flowering of winter cultivars under all non-inductive conditions, i.e. under short days or long days in plants that have not satisfied their vernalization requirement. This mechanism is indicated to be a component of an adaptation syndrome of barley to Mediterranean conditions.

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Section: Discussionsupporting

confidence: 89%

Adaptation of barley to mild winters: A role for PPDH2

et al. 2011

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“…We find HvCMF6a and HvCMF6b (orthologous to Os05g51630) to cosegregate with ABG387A and 11_20840 on the long arm of chromosome 1H. Flowering time QTL have been previously mapped in this region in other barley populations [68] – [71] , as has the early flowering mutant early maturity 8 ( eam8 ) [67] . Furthermore, QTL for related morphological traits including final leaf number and grain yield are also found at this location (154–158 cM, between markers 11_11509 and 11_20840) [66] .…”

Section: Discussionmentioning

confidence: 69%

Genome Dynamics Explain the Evolution of Flowering Time CCT Domain Gene Families in the Poaceae

et al. 2012

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Numerous CCT domain genes are known to control flowering in plants. They belong to the CONSTANS-like (COL) and PREUDORESPONSE REGULATOR (PRR) gene families, which in addition to a CCT domain possess B-box or response-regulator domains, respectively. Ghd7 is the most recently identified COL gene to have a proven role in the control of flowering time in the Poaceae. However, as it lacks B-box domains, its inclusion within the COL gene family, technically, is incorrect. Here, we show Ghd7 belongs to a larger family of previously uncharacterized Poaceae genes which possess just a single CCT domain, termed here CCT MOTIF FAMILY (CMF) genes. We molecularly describe the CMF (and related COL and PRR) gene families in four sequenced Poaceae species, as well as in the draft genome assembly of barley (Hordeum vulgare). Genetic mapping of the ten barley CMF genes identified, as well as twelve previously unmapped HvCOL and HvPRR genes, finds the majority map to colinear positions relative to their Poaceae orthologues. Combined inter-/intra-species comparative and phylogenetic analysis of CMF, COL and PRR gene families indicates they evolved prior to the monocot/dicot divergence ∼200 mya, with Poaceae CMF evolution described as the interplay between whole genome duplication in the ancestral cereal, and subsequent clade-specific mutation, deletion and duplication events. Given the proven role of CMF genes in the modulation of cereals flowering, the molecular, phylogenetic and comparative analysis of the Poaceae CMF, COL and PRR gene families presented here provides the foundation from which functional investigation can be undertaken.

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“…Earliness affects the plant adaptation to the environmental changes and it is a trait affected by numerous QTLs (Yano et al 2000; Sameri et al 2011). In our study, four QTLs for earliness were detected on chromosomes 2H, 3H, 5H and 7H.…”

Section: Discussionmentioning

confidence: 99%

QTLs for earliness and yield-forming traits in the Lubuski × CamB barley RIL population under various water regimes

et al. 2016

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Drought has become more frequent in Central Europe causing large losses in cereal yields, especially of spring crops. The development of new varieties with increased tolerance to drought is a key tool for improvement of agricultural productivity. Material for the study consisted of 100 barley recombinant inbred lines (RILs) (LCam) derived from the cross between Syrian and European parents. The RILs and parental genotypes were examined in greenhouse experiments under well-watered and water-deficit conditions. During vegetation the date of heading, yield and yield-related traits were measured. RIL population was genotyped with microsatellite and single nucleotide polymorphism markers. This population, together with two other populations, was the basis for the consensus map construction, which was used for identification of quantitative trait loci (QTLs) affecting the traits. The studied lines showed a large variability in heading date. It was noted that drought-treatment negatively affected the yield and its components, especially when applied at the flag leaf stage. In total, 60 QTLs were detected on all the barley chromosomes. The largest number of QTLs was found on chromosome 2H. The main QTL associated with heading, located on chromosome 2H (Q.HD.LC-2H), was identified at SNP marker 5880–2547, in the vicinity of Ppd-H1 gene. SNP 5880–2547 was also the closest marker to QTLs associated with plant architecture, spike morphology and grain yield. The present study showed that the earliness allele from the Syrian parent, as introduced into the genome of an European variety could result in an improvement of barley yield performance under drought conditions.Electronic supplementary materialThe online version of this article (doi:10.1007/s13353-016-0363-4) contains supplementary material, which is available to authorized users.

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Detection of photoperiod responsive and non-responsive flowering time QTL in barley

Cited by 11 publications

References 23 publications

Adaptation of barley to mild winters: A role for PPDH2

Adaptation of barley to mild winters: A role for PPDH2

Genome Dynamics Explain the Evolution of Flowering Time CCT Domain Gene Families in the Poaceae

QTLs for earliness and yield-forming traits in the Lubuski × CamB barley RIL population under various water regimes

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