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

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journal contribution
posted on 2023-05-22, 01:50 authored by John RossJohn Ross, Wolbang, CM
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.

History

Publication title

Plant Signaling & Behavior

Pagination

74-75

ISSN

1559-2316

Department/School

School of Natural Sciences

Publisher

Landes Bioscience

Place of publication

USA

Repository Status

  • Restricted

Socio-economic Objectives

Horticultural crops not elsewhere classified

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