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Signals in abscission.

Taylor, Jane E. and Whitelaw, Catherine A. (2001) Signals in abscission. New Phytologist, 151 (2). pp. 323-339. ISSN 0028-646X

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Abstract

Abscission is the term used to describe the process of natural separation of organs from the parent plant. This may be part of the highly programmed development of a plant, or in response to environmental stress. It enables temperate plants to overwinter and hence survive, but in agricultural or horticultural environments premature abscission can lead to significant crop losses. Abscission is the culmination of changes in gene expression, which result in the loosening of adjacent cell walls within the zone and subsequent cell separation. For many years it has been recognized that the balance between the plant hormones ethylene and auxin determine where, and when, separation takes place. As we begin to understand the mechanisms by which plant growth regulator signals are perceived and transduced, we can begin to understand how the process of abscission itself may be induced and regulated. This review details what we know of the signals that lead to the differentiation of zone cells; the environmental signals that promote cell separation, and the possible intracellular signalling events that culminate in organ shedding.

Item Type: Article
Journal or Publication Title: New Phytologist
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 9421
Deposited By: Dr Jane E Taylor
Deposited On: 09 Jun 2008 13:14
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:36
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9421

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