"HAIRY CANOLA"--Arabidopsis GL3 induces a dense covering of trichomes on Brassica napus seedlings.

Plant Molecular Biology
M Y GruberA M Lloyd

Abstract

Transformation with the Arabidopsis bHLH gene 35S:GLABRA3 (GL3) produced novel B. napus plants with an extremely dense coverage of trichomes on seedling tissues (stems and young leaves). In contrast, trichomes were strongly induced in seedling stems and moderately induced in leaves of a hairy, purple phenotype transformed with a 2.2 kb allele of the maize anthocyanin regulator LEAF COLOUR (Lc), but only weakly induced by BOOSTER (B-Peru), the maize Lc 2.4 kb allele, or the Arabidopsis trichome MYB gene GLABRA1 (GL1). B. napus plants containing only the GL3 transgene had a greater proportion of trichomes on the adaxial leaf surface, whereas all other plant types had a greater proportion on the abaxial surface. Progeny of crosses between GL3+ and GL1+ plants resulted in trichome densities intermediate between a single-insertion GL3+ plant and a double-insertion GL3+ plant. None of the transformations stimulated trichomes on Brassica cotyledons or on non-seedling tissues. A small portion of bHLH gene-induced trichomes had a swollen terminal structure. The results suggest that trichome development in B. napus may be regulated differently from Arabidopsis. They also imply that insertion of GL3 into Brassica species under a tissue-sp...Continue Reading

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Citations

Feb 2, 2013·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Feng LiTakeshi Nishio
Sep 22, 2012·Cellular and Molecular Life Sciences : CMLS·Changxian Yang, Zhibiao Ye
Sep 3, 2010·The Plant Journal : for Cell and Molecular Biology·Jonathan M PlettSharon Regan
Jul 30, 2014·Frontiers in Plant Science·Marie-Theres Hauser
Oct 31, 2014·Journal of Chemical Ecology·Maxime R HervéAnne Marie Cortesero
May 28, 2011·American Journal of Botany·Janette A SteetsDiana E Wolf
Jun 22, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jiaqin MeiWei Qian
Jan 16, 2010·Journal of Agricultural and Food Chemistry·Xiang LiMargaret Y Gruber
Aug 22, 2007·Journal of Agricultural and Food Chemistry·Jaroslav MatousekDenis De Keukeleire

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