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

0511214 - ÚEB 2020 RIV DE eng J - Journal Article
Štorchová, Helena - Hubáčková, Helena - Abeyawardana, Oushadee A.J. - Walterová, Jana - Vondráková, Zuzana - Eliášová, Kateřina - Mandák, Bohumil
Chenopodium ficifolium flowers under long days without upregulation of FLOWERING LOCUS T (FT) homologs.
Planta. Roč. 250, č. 6 (2019), s. 2111-2125. ISSN 0032-0935. E-ISSN 1432-2048
R&D Projects: GA ČR GA13-02290S; GA MŠMT(CZ) EF16_019/0000738
Institutional support: RVO:61389030 ; RVO:67985939
Keywords : Amaranthaceae * Floral induction * FLOWERING LOCUS T like genes * Gene expression * Photoperiod * Transcriptome
OECD category: Biochemical research methods
Impact factor: 3.390, year: 2019
Method of publishing: Open access
http://dx.doi.org/10.1007/s00425-019-03285-1

Main conclusion: Chenopodium ficifoliumflowered under long days despite much lower expression of FLOWERING LOCUS T homolog than under short days. Abstract: 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.
Permanent Link: http://hdl.handle.net/11104/0301538