RRC ID 2498
Author Shitsukawa N, Takagishi A, Ikari C, Takumi S, Murai K.
Title WFL, a wheat FLORICAULA/LEAFY ortholog, is associated with spikelet formation as lateral branch of the inflorescence meristem.
Journal Genes Genet Syst
Abstract FLORICAULA (FLO) of Antirrhinum and LEAFY (LFY) of Arabidopsis encode plant-specific transcription factors, which are necessary and sufficient to specify floral meristem identity. We isolated WFL, a wheat FLO/LFY ortholog, and analyzed its expression pattern. RT-PCR analysis indicated that WFL is expressed predominantly in young spike. The WFL expression pattern during reproductive development was analyzed in more detail by using in situ hybridization technique. WFL transcripts were observed in all layers of the young spike excepting spikelet initiation sites as axillary meristem. In the double-ridge stage, WFL transcripts were localized in the lower ridge but were absent in the upper ridge, where spikelet meristem initiates. The WFL expression pattern indicated that WFL is associated with spikelet formation rather than floral meristem identity in wheat. As development of floret proceeds, the WFL transcripts were detectable in the developing palea, but not in other floral organs, suggesting that WFL may play a novel role in developing palea in the wheat floret.
Volume 81(1)
Pages 13-20
Published 2006-2-1
DOI 10.1266/ggs.81.13
PII JST.JSTAGE/ggs/81.13
PMID 16607037
MeSH Flowering Tops / growth & development* Meristem / genetics Meristem / growth & development* Molecular Sequence Data Plant Proteins / genetics* Plant Proteins / physiology Triticum / genetics* Triticum / growth & development*
IF 0.917
Times Cited 30
Wheat CS Ditelosomic lines of group 2 homoeologous chromosome and recombinant inbred lines of diploid wheat.