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Auxin, gibberellins and the gravitropic response of grass leaf sheath pulvini
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The role of hormones in mediating tropic responses has been
a central question in plant biology. Another key issue concerns how interactions between hormones regulate plant responses. In the September 2007 issue of Physiologia Plantarum, we published a paper relevant to both these questions.1 This paper focuses on gravitropism in the barley leaf sheath pulvinus. The results support the Cholodny-Went theory on hormones and tropic responses, and highlight how an environmental factor (gravity) appears to first affect auxin content and consequently that of bioactive gibberellins (GAs). It appears that while GAs do not actually trigger the gravitropic bending of barley pulvini, they do act to magnify the bending response.
|Journal or Publication Title:||Plant Signaling & Behavior|
|Page Range:||pp. 74-75|
|Identification Number - DOI:||10.4161/psb.3.1.4929|
The definitive published version is available online at: http://www.landesbioscience.com/journals/psb/
|Date Deposited:||22 Aug 2011 01:28|
|Last Modified:||18 Nov 2014 04:21|
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