Auxin controls local cytokinin biosynthesis in the nodal stem in apical dominance

The Plant Journal : for Cell and Molecular Biology
Mina TanakaHitoshi Mori

Abstract

In intact plants, the shoot apex grows predominantly and inhibits outgrowth of axillary buds. After decapitation of the shoot apex, outgrowth of axillary buds begins. This phenomenon is called an apical dominance. Although the involvement of auxin, which represses outgrowth of axillary buds, and cytokinin (CK), which promotes outgrowth of axillary buds, has been proposed, little is known about the underlying molecular mechanisms. In the present study, we demonstrated that auxin negatively regulates local CK biosynthesis in the nodal stem by controlling the expression level of the pea (Pisum sativum L.) gene adenosine phosphate-isopentenyltransferase (PsIPT), which encodes a key enzyme in CK biosynthesis. Before decapitation, PsIPT1 and PsIPT2 transcripts were undetectable; after decapitation, they were markedly induced in the nodal stem along with accumulation of CK. Expression of PsIPT was repressed by the application of indole-3-acetic acid (IAA). In excised nodal stem, PsIPT expression and CK levels also increased under IAA-free conditions. Furthermore, beta-glucuronidase expression, under the control of the PsIPT2 promoter region in transgenic Arabidopsis, was repressed by an IAA. Our results indicate that in apical dominan...Continue Reading

References

Nov 1, 1990·The Plant Cell·C LincolnM Estelle
Mar 9, 1999·The Plant Journal : for Cell and Molecular Biology·S J Clough, A F Bent
Apr 12, 2000·The Plant Journal : for Cell and Molecular Biology·J J RossR C Elliott
Nov 9, 2000·The Plant Journal : for Cell and Molecular Biology·S P ChatfieldO Leyser
Dec 18, 2001·Plant Physiology·S Shimizu-Sato, H Mori
May 10, 2002·The Plant Journal : for Cell and Molecular Biology·Manuella CatterouRajbir S Sangwan
Aug 1, 2002·The Plant Journal : for Cell and Molecular Biology·Elena ZubkoPeter Meyer
Feb 5, 2003·The Plant Cell·Jonathan BookerOttoline Leyser
May 22, 2003·Trends in Plant Science·Eiji Nambara, Annie Marion-Poll
Nov 11, 2003·Trends in Plant Science·Ottoline Leyser
Jan 21, 2004·Current Opinion in Plant Biology·Sally P Ward, Ottoline Leyser
May 18, 2004·Proceedings of the National Academy of Sciences of the United States of America·Anders NordströmGöran Sandberg
Jul 29, 2004·The Journal of Biological Chemistry·Kentaro TakeiHitoshi Sakakibara
Sep 10, 2004·Plant & Cell Physiology·Kentaro TakeiHitoshi Sakakibara
Jan 22, 2005·The Plant Cell·Eloise FooChristine Anne Beveridge
Feb 3, 2005·The Plant Journal : for Cell and Molecular Biology·Hitoshi NakagawaHiroshi Takatsuji
Jun 21, 2005·Current Opinion in Genetics & Development·Ottoline Leyser
Jul 1, 1933·Proceedings of the National Academy of Sciences of the United States of America·K V Thimann, F Skoog
Apr 1, 1949·Plant Physiology·W E Snyder

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Citations

Feb 8, 2011·Sexual Plant Reproduction·Stefano BencivengaSimona Masiero
Sep 8, 2010·Journal of Industrial Microbiology & Biotechnology·Anwar Hussain, Shahida Hasnain
Nov 1, 2008·Plant Molecular Biology·Sae Shimizu-SatoHitoshi Mori
Jan 30, 2010·Plant Molecular Biology·Tanya WaldieChristine Anne Beveridge
Sep 19, 2009·Journal of Chemical Biology·Omid KaramiAghil Mahmoudi Pour
Mar 24, 2011·Nature Reviews. Molecular Cell Biology·Malgorzata A Domagalska, Ottoline Leyser
Feb 9, 2008·Proceedings of the National Academy of Sciences of the United States of America·Hajime SugawaraHitoshi Sakakibara
Oct 7, 2009·Proceedings of the National Academy of Sciences of the United States of America·Przemyslaw PrusinkiewiczOttoline Leyser
Oct 17, 2012·AoB Plants·Petra StammPrakash P Kumar
Nov 13, 2010·Journal of Experimental Botany·R G Thomas, M J M Hay
Aug 7, 2012·Journal of Experimental Botany·Satoshi MatsuoShunsuke Imanishi
Jun 16, 2010·Plant & Cell Physiology·Kosuke MinakuchiJunko Kyozuka
Jan 15, 2013·Plant & Cell Physiology·Toru KudoHitoshi Sakakibara
Nov 18, 2011·Molecular Plant-microbe Interactions : MPMI·Thomas PéronPhilippe Simier
Nov 10, 2006·Plant Physiology·Elizabeth Ann DunChristine Anne Beveridge
Dec 13, 2006·Plant Physiology·Jennifer MoonMark Estelle
Feb 6, 2007·Plant Physiology·Eloise FooChristine A Beveridge
Jan 8, 2009·Plant Physiology·Paula McSteen
Mar 27, 2009·Plant Physiology·Philip B BrewerChristine A Beveridge
Feb 17, 2009·Plant Physiology·Brett J Ferguson, Christine A Beveridge
Jul 31, 2009·Plant Physiology·Alice HaywardOttoline Leyser
Nov 2, 2011·Plant Physiology·Elizabeth A DunChristine A Beveridge
Mar 3, 2012·Plant Physiology·Yu-Chang TsaiJoseph J Kieber
Apr 24, 2013·Plant Physiology·Sally P WardOttoline Leyser
Aug 10, 2013·Plant Physiology·Srirama Krishna ReddyScott A Finlayson
Feb 20, 2007·The Plant Cell·José Antonio Aguilar-MartínezPilar Cubas
Jun 26, 2007·The Plant Cell·Xiao-Jun YinAndreas Bachmair
May 4, 2006·Annual Review of Plant Biology·Hitoshi Sakakibara
Mar 25, 2010·Development·Wolfgang Busch, Philip N Benfey

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