Mechanisms of Age-Dependent Response to Winter Temperature in Perennial Flowering of
            <i>Arabis alpina</i>

Bergonzi, Sara; Albani, Maria C.; Themaat, Emiel Ver Loren van; Nordström, Karl; Wang, Renhou; Schneeberger, Korbinian; Moerland, Perry D.; Coupland, George

doi:10.1126/science.1234116

Cited by 204 publications

(240 citation statements)

References 26 publications

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“…In V3 branches, it is 364 likely that the high expression of miR156, a microRNA that promotes juvenility and represses 365 flowering, ensures that these shoots remain vegetative (Park et al, 2017). The downregulation of 366 miR156 accumulation is slowed down by vernalization but after extended vernalization miR156 levels 367 are reduced (Bergonzi et al, 2013), which may result in the marginal commitment of V3 branches. 368…”

Section: Discussion 319mentioning

confidence: 99%

“…Primers used for RT-qPCR for PEP1, AaSOC1, AaLFY, AaTFL1, AaRAN3, and AaPP2A were described 517 previously (Wang et al, 2009;Wang et al, 2011;Bergonzi et al, 2013 . 522…”

Section: Inflorescence Meristem During Cold Treatment These Results mentioning

confidence: 99%

“…Three-week-old plants of the A. alpina accession Pajares are not competent to flower in response to 212 cold and remain vegetative during and after vernalization, whereas six-week-old plants initiate 213 flowering during vernalization (Wang et al, 2011;Bergonzi et al, 2013;Park et al, 2017). Apices of 214 three-week-old plants are composed of the vegetative shoot apical meristem and leaf primordia.…”

Section: Introductionmentioning

confidence: 99%

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Extended Vernalization Regulates Inflorescence Fate in Arabis alpina by Stably Silencing PERPETUAL FLOWERING1

2018

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Section: Discussion 319mentioning

confidence: 99%

“…Primers used for RT-qPCR for PEP1, AaSOC1, AaLFY, AaTFL1, AaRAN3, and AaPP2A were described 517 previously (Wang et al, 2009;Wang et al, 2011;Bergonzi et al, 2013 . 522…”

Section: Inflorescence Meristem During Cold Treatment These Results mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extended Vernalization Regulates Inflorescence Fate in Arabis alpina by Stably Silencing PERPETUAL FLOWERING1

2018

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“…2009 and Bergonzi et al . 2013; primer names PEP1 (qPCR) and PP2A (qPCR) as reference gene; Table S2, Supporting information) in triplicates or quadruplicates. If necessary, primer sequences were adjusted to point mutations present in the priming sites in the different species (cDNA sequences of FLC orthologues in Fig.…”

Section: Methodsmentioning

confidence: 99%

Divergence of annual and perennial species in the Brassicaceae and the contribution of cis‐acting variation at FLC orthologues

Kiefer

Severing

Karl³

et al. 2017

Molecular Ecology

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Variation in life history contributes to reproductive success in different environments. Divergence of annual and perennial angiosperm species is an extreme example that has occurred frequently. Perennials survive for several years and restrict the duration of reproduction by cycling between vegetative growth and flowering, whereas annuals live for 1 year and flower once. We used the tribe Arabideae (Brassicaceae) to study the divergence of seasonal flowering behaviour among annual and perennial species. In perennial Brassicaceae, orthologues of FLOWERING LOCUS C (FLC), a floral inhibitor in Arabidopsis thaliana, are repressed by winter cold and reactivated in spring conferring seasonal flowering patterns, whereas in annuals, they are stably repressed by cold. We isolated FLC orthologues from three annual and two perennial Arabis species and found that the duplicated structure of the A. alpina locus is not required for perenniality. The expression patterns of the genes differed between annuals and perennials, as observed among Arabidopsis species, suggesting a broad relevance of these patterns within the Brassicaceae. Also analysis of plants derived from an interspecies cross of A. alpina and annual A. montbretiana demonstrated that cis‐regulatory changes in FLC orthologues contribute to their different transcriptional patterns. Sequence comparisons of FLC orthologues from annuals and perennials in the tribes Arabideae and Camelineae identified two regulatory regions in the first intron whose sequence variation correlates with divergence of the annual and perennial expression patterns. Thus, we propose that related cis‐acting changes in FLC orthologues occur independently in different tribes of the Brassicaceae during life history evolution.

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“…An internal mechanism that allows it to flower is linked with the decline in concentration of a small piece of RNA called microRNA that can bind to a longer thread of messenger RNA to inhibit protein synthesis. Over time its concentration declines and when it falls below a certain level, the flowering process starts (Bergonzi et al 2013). Mutation of microRNA in D. draco would prevent it from flowering and result in growing ''Drago Macho''.…”

Section: Sunlight Makes D Draco Flowermentioning

confidence: 99%

Photomorphogenesis in Dracaena draco

Krawczyszyn¹,

Krawczyszyn²

2015

Trees

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Key message Sunlight is a key environmental factor in growth, flowering and shaping of the Dracaena draco tree. Unidirectional light deforms the tree and may cause it to tilt. Abstract Dracaena draco, a tree-like monocot, lives in cycles of vegetative growth and flowering. The cycles, as well as the tree growth form, are under genetic control. What controls their length has been unknown before. We propose that it is sunlight. Our trees of the same origin, growing for 20 years in the garden in varying sunlight conditions, started to flower when 9-12, 16 and 18-19 years old, for those growing in full sun, part shade and shade, respectively. In full sun, they grow shorter trunks than those in shade, catching overhead sun. Their branches also had shorter or longer growth and flowering cycles depending on sunlight availability. D. draco tree exhibited strong phototropic response and its crown was organized by the direction of growing tips. In full and in overhead sun, it had a regular form but asymmetrical in unidirectional, oblique sunlight. An asymmetrical crown and the absence of reaction wood may cause the D. draco tree tilting and progressive loss of balance.

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Mechanisms of Age-Dependent Response to Winter Temperature in Perennial Flowering of Arabis alpina

Cited by 204 publications

References 26 publications

Extended Vernalization Regulates Inflorescence Fate in Arabis alpina by Stably Silencing PERPETUAL FLOWERING1

Extended Vernalization Regulates Inflorescence Fate in Arabis alpina by Stably Silencing PERPETUAL FLOWERING1

Divergence of annual and perennial species in the Brassicaceae and the contribution of cis‐acting variation at FLC orthologues

Photomorphogenesis in Dracaena draco

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