Chenopodium ficifolium flowers under long days without upregulation of FLOWERING LOCUS T (FT) homologs

Frequent duplications of the FLOWERING LOCUS T (FT) gene across various taxonomic lineages resulted in FT paralogs with floral repressor function, whereas others duplicates maintained their floral-promoting role. The FT gene has been confirmed as the inducer of photoperiodic flowering in most angios...

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Bibliographic Details
Published in:Planta 2019-12, Vol.250 (6), p.2111-2125
Main Authors: Štorchová, Helena, Hubáčková, Helena, Abeyawardana, Oushadee A. J., Walterová, Jana, Vondráková, Zuzana, Eliášová, Kateřina, Mandák, Bohumil
Format: Article
Language:English
Subjects:
Agriculture
Angiosperms
Biomedical and Life Sciences
Chenopodium
Chenopodium - genetics
Chenopodium - growth & development
Chenopodium ficifolium
Ecology
Flowering
FLOWERING LOCUS T gene
Flowers
Flowers - genetics
Flowers - growth & development
Forestry
Gene expression
Gene Expression Regulation, Plant
Genomes
Homology
Life Sciences
Loci
Magnoliopsida - genetics
Magnoliopsida - growth & development
ORIGINAL ARTICLE
Photoperiod
Plant Sciences
Quinoa
Reproduction (copying)
Transcriptional Activation
Up-Regulation
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Summary:Frequent duplications of the FLOWERING LOCUS T (FT) gene across various taxonomic lineages resulted in FT paralogs with floral repressor function, whereas others duplicates maintained their floral-promoting role. The FT gene has been confirmed as the inducer of photoperiodic flowering in most angiosperms analyzed to date. We identified all FT homologs in the transcriptome of Chenopodium ficifolium and in the genome of Chenopodium suecicum, which are closely related to diploid progenitors of the tetraploid crop Chenopodium quinoa, and estimated their expression during photoperiodic floral induction. We found that expression of FLOWERING LOCUS T like 1 (FTL1), the ortholog of the sugar beet floral activator BvFT2, correlated with floral induction in C. suecicum and short-day C. ficifolium, but not with floral induction in C. ficifolium with accelerated flowering under long days. This C. ficifolium accession was induced to flowering without the concomitant upregulation of any FT homolog.
ISSN:0032-0935
1432-2048
DOI:10.1007/s00425-019-03285-1