Originally published as Genetics Published Articles Ahead of Print on March 4, 2007.

Genetics, Vol. 176, 599-609, May 2007, Copyright © 2007
doi:10.1534/genetics.106.069500

The FLOWERING LOCUS T-Like Gene Family in Barley (Hordeum vulgare)

John Innes Centre, Norwich Research Park, Colney, Norwich NR4 7UH, United Kingdom

1 Corresponding author: JIC, Norwich Research Park, Colney Lane, Norwich NR4 7UH, United Kingdom.
E-mail: david.laurie{at}bbsrc.ac.uk

The FLOWERING LOCUS T (FT) gene plays a central role in integrating flowering signals in Arabidopsis because its expression is regulated antagonistically by the photoperiod and vernalization pathways. FT belongs to a family of six genes characterized by a phosphatidylethanolamine-binding protein (PEBP) domain. In rice (Oryza sativa), 19 PEBP genes were previously described, 13 of which are FT-like genes. Five FT-like genes were found in barley (Hordeum vulgare). HvFT1, HvFT2, HvFT3, and HvFT4 were highly homologous to OsFTL2 (the Hd3a QTL), OsFTL1, OsFTL10, and OsFTL12, respectively, and this relationship was supported by comparative mapping. No rice equivalent was found for HvFT5. HvFT1 was highly expressed under long-day (inductive) conditions at the time of the morphological switch of the shoot apex from vegetative to reproductive growth. HvFT2 and HvFT4 were expressed later in development. HvFT1 was therefore identified as the main barley FT-like gene involved in the switch to flowering. Mapping of HvFT genes suggests that they provide important sources of flowering-time variation in barley. HvFTI was a candidate for VRN-H3, a dominant mutation giving precocious flowering, while HvFT3 was a candidate for Ppd-H2, a major QTL affecting flowering time in short days.




This article has been cited by other articles:


Home page
Plant CellHome page
C. Alonso-Blanco, M. G.M. Aarts, L. Bentsink, J. J.B. Keurentjes, M. Reymond, D. Vreugdenhil, and M. Koornneef
What Has Natural Variation Taught Us about Plant Development, Physiology, and Adaptation?
PLANT CELL, July 1, 2009; 21(7): 1877 - 1896.
[Abstract] [Full Text] [PDF]


Home page
ANN BOT (LOND)Home page
A. Greenup, W. J. Peacock, E. S. Dennis, and B. Trevaskis
The molecular biology of seasonal flowering-responses in Arabidopsis and the cereals
Ann. Bot., June 1, 2009; 103(8): 1165 - 1172.
[Abstract] [Full Text] [PDF]


Home page
J Exp BotHome page
S. Sasani, M. N. Hemming, S. N. Oliver, A. Greenup, R. Tavakkol-Afshari, S. Mahfoozi, K. Poustini, H.-R. Sharifi, E. S. Dennis, W. J. Peacock, et al.
The influence of vernalization and daylength on expression of flowering-time genes in the shoot apex and leaves of barley (Hordeum vulgare).
J. Exp. Bot., May 1, 2009; 60(7): 2169 - 2178.
[Abstract] [Full Text] [PDF]


Home page
Plant Physiol.Home page
R. Kikuchi, H. Kawahigashi, T. Ando, T. Tonooka, and H. Handa
Molecular and Functional Characterization of PEBP Genes in Barley Reveal the Diversification of Their Roles in Flowering
Plant Physiology, March 1, 2009; 149(3): 1341 - 1353.
[Abstract] [Full Text] [PDF]


Home page
Plant Physiol.Home page
J. Colasanti and V. Coneva
Mechanisms of Floral Induction in Grasses: Something Borrowed, Something New
Plant Physiology, January 1, 2009; 149(1): 56 - 62.
[Full Text] [PDF]


Home page
J Exp BotHome page
Compiled by, F. Tooke, T. Chiurugwi, and N. Battey
Flowering Newsletter bibliography for 2007
J. Exp. Bot., July 18, 2008; (2008) ern109v1.
[Full Text] [PDF]


Home page
J Exp BotHome page
I. Karsai, P. Szucs, B. Koszegi, P.M. Hayes, A. Casas, Z. Bedo, and O. Veisz
Effects of photo and thermo cycles on flowering time in barley: a genetical phenomics approach
J. Exp. Bot., July 1, 2008; 59(10): 2707 - 2715.
[Abstract] [Full Text] [PDF]


Home page
Plant Cell PhysiolHome page
T. Aki, M. Shigyo, R. Nakano, T. Yoneyama, and S. Yanagisawa
Nano Scale Proteomics Revealed the Presence of Regulatory Proteins Including Three FT-Like proteins in Phloem and Xylem Saps from Rice
Plant Cell Physiol., May 1, 2008; 49(5): 767 - 790.
[Abstract] [Full Text] [PDF]


Home page
Plant Physiol.Home page
M. N. Hemming, W. J. Peacock, E. S. Dennis, and B. Trevaskis
Low-Temperature and Daylength Cues Are Integrated to Regulate FLOWERING LOCUS T in Barley
Plant Physiology, May 1, 2008; 147(1): 355 - 366.
[Abstract] [Full Text] [PDF]


Home page
DevelopmentHome page
R. Komiya, A. Ikegami, S. Tamaki, S. Yokoi, and K. Shimamoto
Hd3a and RFT1 are essential for flowering in rice
Development, February 15, 2008; 135(4): 767 - 774.
[Abstract] [Full Text] [PDF]


Home page
Plant Physiol.Home page
O. N. Danilevskaya, X. Meng, Z. Hou, E. V. Ananiev, and C. R. Simmons
A Genomic and Expression Compendium of the Expanded PEBP Gene Family from Maize
Plant Physiology, January 1, 2008; 146(1): 250 - 264.
[Abstract] [Full Text] [PDF]