Localization of expression of three cold-induced genes, blt101, blt4. 9, and blt14, in different tissues of the crown and developing leaves of cold-acclimated cultivated barley

Plant Physiology
Roger S Pearce Alison Dunn M

Abstract

Tissues expressing mRNAs of three cold-induced genes, blt101, blt14, and blt4.9, and a control gene, elongation factor 1alpha, were identified in the crown and immature leaves of cultivated barley (Hordeum vulgare L. cv Igri). Hardiness and tissue damage were assessed. blt101 and blt4.9 mRNAs were not detected in control plants; blt14 was expressed in control plants but only in the inner layers of the crown cortex. blt101 was expressed in many tissues of cold-acclimated plants but most strongly in the vascular-transition zone of the crown; blt14 was expressed only in the inner layers of the cortex and in cell layers partly surrounding vascular bundles in the vascular-transition zone; expression of blt4.9, which codes for a nonspecific lipid-transfer protein, was confined to the epidermis of the leaf and to the epidermis of the older parts of the crown. None of the cold-induced genes was expressed in the tunica, although the control gene was most strongly expressed there. Thus, the molecular aspects of acclimation differed markedly between tissues. Damage in the vascular-transition zone of the crown correlated closely with plant survival. Therefore, the strong expression of blt101 and blt14 in this zone may indicate a direct rol...Continue Reading

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Citations

Mar 10, 2010·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Andrea K KnoxEric J Stockinger
Sep 27, 2005·Molecular Genetics and Genomics : MGG·Michiya KoikeRyozo Imai
Jul 31, 2003·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Mariana S CastroCarlos Bloch
Oct 9, 2002·The Plant Journal : for Cell and Molecular Biology·Francisco LlorenteJulio Salinas
Nov 5, 2008·Journal of Experimental Botany·Iona Rekarte-CowieRoger S Pearce
Mar 18, 2009·Cellular and Molecular Life Sciences : CMLS·David P LivingstonArnd G Heyer
Feb 22, 2005·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·S BérotJ Guéguen
Aug 13, 2002·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Maggie Smallwood, Dianna J Bowles
Jun 17, 2008·Protein Science : a Publication of the Protein Society·Marie-Bernard LascombeThierry Prangé
Sep 13, 2002·Plant Physiology·Parvathi Rudrabhatla, Ram Rajasekharan

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