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Auxin, gibberellins, and the gravitropic response of grass leaf sheath pulvini

Citation

Ross, JJ and Wolbang, CM, Auxin, gibberellins, and the gravitropic response of grass leaf sheath pulvini, Plant Signaling & Behavior, 3, (1) pp. 74-75. ISSN 1559-2316 (2008) [Contribution to Refereed Journal]

DOI: doi:10.4161/psb.3.1.4929

Abstract

he 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 publish 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.

Item Details

Item Type:Contribution to Refereed Journal
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural Crops
Objective Field:Horticultural Crops not elsewhere classified
UTAS Author:Ross, JJ (Associate Professor John Ross)
ID Code:53338
Year Published:2008
Deposited By:Plant Science
Deposited On:2008-11-28
Last Modified:2009-06-15
Downloads:0

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