PMID: 11607418Aug 1, 1993Paper

Gibberellin A1 is required for stem elongation in spinach

Proceedings of the National Academy of Sciences of the United States of America
J A ZeevaartM Talon

Abstract

The effects of the growth retardants 2'-isopropyl-4'-(trimethylammonium chloride)-5'-methylphenyl piperidine-1-carboxylate (AMO-1618) and calcium 3,5-dioxo-4-propionylcyclohexanecarboxylate (BX-112) on stem elongation were investigated in the rosette plant spinach (Spinacia oleracea L.) under long-day (LD) conditions. Stem growth induced by a LD treatment was prevented by both retardants. The inhibition caused by AMO-1618 was reversed by gibberellin A1 (GA1) and GA20, whereas the effects of BX-112 were reversed by GA1 only. Six GAs (GA53, GA44, GA19, GA20, GA1, and GA8) were quantified by gas chromatography-selected ion monitoring using internal standards. Plants treated with BX-112 had reduced levels of GA1 and GA8 and accumulated GA53, GA44, GA19, and GA20. The relative levels of four additional GAs (3-epi-GA1, GA29, GA60, and GA81) were compared by ion intensities only. Relative to GA81, the level of GA29 was decreased by BX-112, whereas the levels of GA60 and 3-epi-GA1 were increased. Transfer of spinach from short-day conditions to LD conditions caused an increase in all identified GAs of the early 13-hydroxylation pathway with GA20, GA1, and GA8 showing the largest increases. These findings support the position that, of t...Continue Reading

Citations

Jan 12, 2007·Planta·Dong Ju Lee, Jan A D Zeevaart
Mar 24, 2007·Plant & Cell Physiology·Lina Gallego-GiraldoIsabel López-Díaz
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Wilhelm Rademacher
Jan 5, 2008·Annual Review of Plant Biology·Shinjiro Yamaguchi
Jul 7, 2009·Annual Review of Plant Biology·Jan A D Zeevaart
Feb 14, 2006·Journal of Plant Physiology·Fanjiang KongTeruhiko Yoshihara
May 20, 2015·International Journal of Phytoremediation·Waraporn ChouychaiHung Lee
Jan 26, 2021·Plant Science : an International Journal of Experimental Plant Biology·Qiaoxia LiChaoying He
Jul 31, 2007·Plant Physiology·Juan Carlos SerraniJosé Luis García-Martínez
Dec 14, 2002·Plant Physiology·Dong Ju Lee, Jan A D Zeevaart
Mar 28, 1998·Plant Physiology·I J LeeP W Morgan

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