Increase in transcript accumulation of Psy1 and e-Lcy genes in grain development is associated with differences in seed carotenoid content between durum wheat and tritordeum

Increase in transcript accumulation of Psy1 and e-Lcy genes in grain development is associated... Carotenoid rich diets have been associated with lower risk of certain diseases. The great importance of cereals in human diet has directed breeding programs towards carotenoid enhancement to alleviate these deficiencies in developing countries and to offer new functional foods in the developed ones. The new cereal tritordeum (×Tritordeum Ascherson et Graebener) derived from durum wheat (Triticum turgidum ssp. durum) and the wild barley Hordeum chilense, naturally presents carotenoid levels 5–8 times higher than those of durum wheat. The improvement of tritordeum properties as a new functional food requires the elucidation of biosynthetic steps for carotenoid accumulation in seeds that differ from durum wheat. In this work expression patterns of nine genes from the isoprenoid and carotenoid biosynthetic pathways were monitored during grain development in durum wheat and tritordeum. Additionally, a fine identification and quantification of pigments (chlorophylls and carotenoids) during grain development and in mature seeds has been addressed. Transcript levels of Psy1, Psy2, Zds, e-Lcy and b-Lcy were found to correlate to carotenoid content in mature grains. The specific activation of the homeologous genes Psy1, e-Lcy from H. chilense and the high lutein esterification found in tritordeum may serve to explain the differences with durum wheat in carotenoid accumulation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Increase in transcript accumulation of Psy1 and e-Lcy genes in grain development is associated with differences in seed carotenoid content between durum wheat and tritordeum

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Life Sciences; Plant Sciences; Biochemistry, general; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-013-0160-y
Publisher site
See Article on Publisher Site

Abstract

Carotenoid rich diets have been associated with lower risk of certain diseases. The great importance of cereals in human diet has directed breeding programs towards carotenoid enhancement to alleviate these deficiencies in developing countries and to offer new functional foods in the developed ones. The new cereal tritordeum (×Tritordeum Ascherson et Graebener) derived from durum wheat (Triticum turgidum ssp. durum) and the wild barley Hordeum chilense, naturally presents carotenoid levels 5–8 times higher than those of durum wheat. The improvement of tritordeum properties as a new functional food requires the elucidation of biosynthetic steps for carotenoid accumulation in seeds that differ from durum wheat. In this work expression patterns of nine genes from the isoprenoid and carotenoid biosynthetic pathways were monitored during grain development in durum wheat and tritordeum. Additionally, a fine identification and quantification of pigments (chlorophylls and carotenoids) during grain development and in mature seeds has been addressed. Transcript levels of Psy1, Psy2, Zds, e-Lcy and b-Lcy were found to correlate to carotenoid content in mature grains. The specific activation of the homeologous genes Psy1, e-Lcy from H. chilense and the high lutein esterification found in tritordeum may serve to explain the differences with durum wheat in carotenoid accumulation.

Journal

Plant Molecular BiologySpringer Journals

Published: Dec 4, 2013

References

  • Chromosomal localization of genes for carotenoid pigments using addition lines of Hordeum chilense in wheat
    Alvarez, JB; Martin, LM; Martin, A
  • The development of a PCR-based marker for Psy1 from Hordeum chilense, a candidate gene for carotenoid content accumulation in tritordeum seeds
    Atienza, SG; Avila, CM; Martin, A
  • The nuclear-cytoplasmic interaction controls carotenoid content in wheat
    Atienza, SG; Martín, A; Pecchioni, N; Platani, C; Cattivelli, L
  • Novel lycopene epsilon cyclase activities in maize revealed through perturbation of carotenoid biosynthesis
    Bai, L; Kim, E-H; DellaPenna, D; Brutnell, TP

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