Positional relationships between photoperiod response QTL and photoreceptor and vernalization genes in barley

P. Szucs, I. Karsai, J. Von Zitzewitz, K. Mészáros, L. L D Cooper, Y. Q. Gu, T. H H Chen, P. M. Hayes, J. S. Skinner

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Winterhardiness has three primary components: photoperiod (day length) sensitivity, vernalization response, and low temperature tolerance. Photoperiod and vernalization regulate the vegetative to reproductive phase transition, and photoperiod regulates expression of key vernalization genes. Using two barley mapping populations, we mapped six individual photoperiod response QTL and determined their positional relationship to the phytochrome and cryptochrome photoreceptor gene families and the vernalization regulatory genes HvBM5A, ZCCT-H, and HvVRT-2. Of the six photoreceptors mapped in the current study (HvP-hyA and HvPhyB to 4HS, HvPhyC to 5HL, HvCry1a and HvCry2 to 6HS, and HvCry1b to 2HL), only HvPhyC coincided with a photoperiod response QTL. We recently mapped the candidate genes for the 5HL VRN-H1 (HvBM5A) and 4HL VRN-H2 (ZCCT-H) loci, and in this study, we mapped HvVRT-2, the barley TaVRT-2 ortholog (a wheat flowering represser regulated by vernalization and photoperiod) to 7HS. Each of these three vernalization genes is located in chromosome regions determining small photoperiod response QTL effects. HvBM5A and HvPhyC are closely linked on 5HL and therefore are currently both positional candidates for the same photoperiod effect. The coincidence of photoperiod-responsive vernalization genes with photoperiod QTL suggests vernalization genes should also be considered candidates for photoperiod effects.

Original languageEnglish
Pages (from-to)1277-1285
Number of pages9
JournalTheoretical And Applied Genetics
Volume112
Issue number7
DOIs
Publication statusPublished - May 2006

Fingerprint

vernalization
Photoperiod
Hordeum
photoreceptors
quantitative trait loci
photoperiod
barley
Genes
genes
Cryptochromes
Phytochrome
Phase Transition
Regulator Genes
phase transition
phytochrome
regulator genes
Triticum
Chromosomes

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Horticulture
  • Plant Science
  • Genetics
  • Genetics(clinical)

Cite this

Positional relationships between photoperiod response QTL and photoreceptor and vernalization genes in barley. / Szucs, P.; Karsai, I.; Von Zitzewitz, J.; Mészáros, K.; Cooper, L. L D; Gu, Y. Q.; Chen, T. H H; Hayes, P. M.; Skinner, J. S.

In: Theoretical And Applied Genetics, Vol. 112, No. 7, 05.2006, p. 1277-1285.

Research output: Contribution to journalArticle

Szucs, P, Karsai, I, Von Zitzewitz, J, Mészáros, K, Cooper, LLD, Gu, YQ, Chen, THH, Hayes, PM & Skinner, JS 2006, 'Positional relationships between photoperiod response QTL and photoreceptor and vernalization genes in barley', Theoretical And Applied Genetics, vol. 112, no. 7, pp. 1277-1285. https://doi.org/10.1007/s00122-006-0229-y
Szucs, P. ; Karsai, I. ; Von Zitzewitz, J. ; Mészáros, K. ; Cooper, L. L D ; Gu, Y. Q. ; Chen, T. H H ; Hayes, P. M. ; Skinner, J. S. / Positional relationships between photoperiod response QTL and photoreceptor and vernalization genes in barley. In: Theoretical And Applied Genetics. 2006 ; Vol. 112, No. 7. pp. 1277-1285.
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