scholarly journals Chilling of Dormant Buds Hyperinduces FLOWERING LOCUS T and Recruits GA-Inducible 1,3-β-Glucanases to Reopen Signal Conduits and Release Dormancy in Populus

2011 ◽  
Vol 23 (1) ◽  
pp. 130-146 ◽  
Author(s):  
Päivi L.H. Rinne ◽  
Annikki Welling ◽  
Jorma Vahala ◽  
Linda Ripel ◽  
Raili Ruonala ◽  
...  
Keyword(s):  
Flowering Locus T ◽  
Flowering Locus

scholarly journals A novel deletion in FLOWERING LOCUS T modulates flowering time in winter oilseed rape

2021 ◽  
Author(s):  
Paul Vollrath ◽  
Harmeet S. Chawla ◽  
Sarah V. Schiessl ◽  
Iulian Gabur ◽  
HueyTyng Lee ◽  
...  
Keyword(s):  
Association Mapping ◽  
Flowering Time ◽  
Oilseed Rape ◽  
Major Effect ◽  
Structural Variants ◽  
Winter Oilseed Rape ◽  
Flowering Locus T ◽  
Winter Type ◽  
Long Read ◽  
Flowering Locus

Abstract Key message A novel structural variant was discovered in the FLOWERING LOCUS T orthologue BnaFT.A02 by long-read sequencing. Nested association mapping in an elite winter oilseed rape population revealed that this 288 bp deletion associates with early flowering, putatively by modification of binding-sites for important flowering regulation genes. Abstract Perfect timing of flowering is crucial for optimal pollination and high seed yield. Extensive previous studies of flowering behavior in Brassica napus (canola, rapeseed) identified mutations in key flowering regulators which differentiate winter, semi-winter and spring ecotypes. However, because these are generally fixed in locally adapted genotypes, they have only limited relevance for fine adjustment of flowering time in elite cultivar gene pools. In crosses between ecotypes, the ecotype-specific major-effect mutations mask minor-effect loci of interest for breeding. Here, we investigated flowering time in a multiparental mapping population derived from seven elite winter oilseed rape cultivars which are fixed for major-effect mutations separating winter-type rapeseed from other ecotypes. Association mapping revealed eight genomic regions on chromosomes A02, C02 and C03 associating with fine modulation of flowering time. Long-read genomic resequencing of the seven parental lines identified seven structural variants coinciding with candidate genes for flowering time within chromosome regions associated with flowering time. Segregation patterns for these variants in the elite multiparental population and a diversity set of winter types using locus-specific assays revealed significant associations with flowering time for three deletions on chromosome A02. One of these was a previously undescribed 288 bp deletion within the second intron of FLOWERING LOCUS T on chromosome A02, emphasizing the advantage of long-read sequencing for detection of structural variants in this size range. Detailed analysis revealed the impact of this specific deletion on flowering-time modulation under extreme environments and varying day lengths in elite, winter-type oilseed rape.

scholarly journals A Norway Spruce FLOWERING LOCUS T Homolog Is Implicated in Control of Growth Rhythm in Conifers

2007 ◽  
Vol 144 (1) ◽  
pp. 248-257 ◽  
Author(s):  
Niclas Gyllenstrand ◽  
David Clapham ◽  
Thomas Källman ◽  
Ulf Lagercrantz
Keyword(s):  
Norway Spruce ◽  
Flowering Locus T ◽  
Growth Rhythm ◽  
Flowering Locus

scholarly journals Predicting the Number of Flowers in Satsuma Mandarin (Citrus unshiu Marc.) Trees Based on Citrus FLOWERING LOCUS T mRNA Levels

2017 ◽  
Vol 86 (3) ◽  
pp. 305-310 ◽  
Author(s):  
Fumie Nishikawa ◽  
Mitsunori Iwasaki ◽  
Hiroshi Fukamachi ◽  
Tomoko Endo
Keyword(s):  
Citrus Unshiu ◽  
Mrna Levels ◽  
Flowering Locus T ◽  
Satsuma Mandarin ◽  
Flowering Locus

Isolation and functional characterization of a novel FLOWERING LOCUS T homolog (NtFT5) in Nicotiana tabacum

2018 ◽  
Vol 231 ◽  
pp. 393-401 ◽  
Author(s):  
Genhong Wang ◽  
Pei Wang ◽  
Yulong Gao ◽  
Yueyue Li ◽  
Lei Wu ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Functional Characterization ◽  
Flowering Locus T ◽  
Flowering Locus

scholarly journals TEM1 combinatorially binds to FLOWERING LOCUS T and recruits a Polycomb factor to repress the floral transition in Arabidopsis

2021 ◽  
Vol 118 (35) ◽  
pp. e2103895118
Author(s):  
Hongmiao Hu ◽  
Shu Tian ◽  
Guohui Xie ◽  
Rui Liu ◽  
Nana Wang ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Molecular Basis ◽  
Floral Transition ◽  
Flowering Locus T ◽  
Dna Binding Domains ◽  
Adult Transition ◽  
Binding Domains ◽  
Flowering Locus ◽  
Specific Regulation

Arabidopsis TEMPRANILLO 1 (TEM1) is a transcriptional repressor that participates in multiple flowering pathways and negatively regulates the juvenile-to-adult transition and the flowering transition. To understand the molecular basis for the site-specific regulation of FLOWERING LOCUS T (FT) by TEM1, we determined the structures of the two plant-specific DNA-binding domains in TEM1, AP2 and B3, in complex with their target DNA sequences from the FT gene 5′-untranslated region (5′-UTR), revealing the molecular basis for TEM1 specificity for its DNA targets. In vitro binding assays revealed that the combination of the AP2 and B3 binding sites greatly enhanced the overall binding of TEM1 to the FT 5′-UTR, indicating TEM1 combinatorically recognizes the FT gene 5′-UTR. We further showed that TEM1 recruits the Polycomb repressive complex 2 (PRC2) to the FT 5′-UTR. The simultaneous binding of the TEM1 AP2 and B3 domains to FT is necessary for deposition of H3K27me3 at the FT 5′-UTR and for the flowering repressor function of TEM1. Overall, our data suggest that the combinatorial recognition of FT 5′-UTR by TEM1 ensures H3K27me3 deposition to precisely regulate the floral transition.

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