LFY Genomic sequences

Minimum number of tobacco LFY genes: 2

Count of tobacco LFY sequences: 7

Pfam accession: FLO_LFY

SHOULD possess FLO_LFY domain

The initial steps of flower development involve two classes of consecutively acting regulatory genes. Meristem-identity genes, which act early to control the initiation of flowers, are expressed throughout the incipient floral primordium. Homeotic genes, which act later to specify the identity of individual floral organs, are expressed in distinct domains within the flower. The link between the two classes of genes has remained unknown so far. Here we show that the meristem-identity gene LEAFY has a role in controlling homeotic genes that is separable from its role in specifying floral fate. On the basis of our observation that LEAFY activates different homeotic genes through distinct mechanisms, we propose a genetic framework for the control of floral patterning.

The plant-specific LEAFY (LFY) protein is necessary and sufficient for the vital switch from vegetative to reproductive development in dicotyledonous plant species. LFY controls the production of the flowers, which are formed in lieu of secondary inflorescences from the flanks of the shoot apical meristem. Because LFY is required for all of the major features that differentiate flowers from inflorescence branches, it is referred to as a meristem identity gene.

Papers

Parcy, F; Nilsson, O; Busch, MA; Lee, I; Weigel, D. A genetic framework for floral patterning. Nature 1998. 395(6702):561-6 PMID: 9783581

Weigel, D; Alvarez, J; Smyth, DR; Yanofsky, MF; Meyerowitz, EM. LEAFY controls floral meristem identity in Arabidopsis. Cell 1992. 69(5):843-59 PMID: 1350515

William DA, Su Y, Smith MR, Lu M, Baldwin DA, Wagner D. Genomic identification of direct target genes of LEAFY. Proc Natl Acad Sci U S A. 2004 Feb 10;101(6):1775-80. Epub 2004 Jan 21. PMID: 14736918



Number of contigs: 5

Number of singlets: 0

Tobaco contains two leafy genes NFL1 and NFL2. Both are present in the GSSs.

Total minimum number – 2




Search sequences and info


Transcription factor sequences
Locus
 Description
 NCBI
LFY_1 [alias=my_seq.23887.Contig1, NFL2] ET048385
ET046492
ET044690
LFY_2 [alias=my_seq.23887.Contig2, NFL2] ET048435
ET044297
ET044298
ET045147
LFY_3 [alias=my_seq.23887.Contig3, NFL1] ET044512
ET048767
ET041972
ET048852
LFY_4 [alias=my_seq.23887.Contig4, NFL2] ET049711
ET043586
ET046914
ET050828
LFY_5 [alias=my_seq.23887.Contig5, NFL1] ET046999
ET043631
ET041801
ET050845
ET048853
LFY_6 [alias=NFL2, NTNFL2S1] ET048385
ET046492
ET044690
LFY_7 [alias=NFL1, U15798] ET050846
ET046999
ET041801


Tobacco published genes related to transcription factor family LFY
Family Genbank ID Name
Authors of this site:

Paul J Rushton
Marta T. Bokowiec
Xianfeng (Jeff) Chen
Thomas (Tom) W Laudeman
Jennifer F. Brannock
Michael P. Timko

Contact:

pr8y@virginia.edu