Skip to Main Content
Polyamines and abiotic stress in plants: a complex relationship Frontiers in Plant ScienceAuthor(s): Rakesh Minocha; Rajtilak Majumdar; Subhash C. Minocha
Source: Frontiers in Plant Science. 5: article 175.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
View PDF (1009.39 KB)
DescriptionThe physiological relationship between abiotic stress in plants and polyamines was reported more than 40 years ago. Ever since there has been a debate as to whether increased polyamines protect plants against abiotic stress (e.g., due to their ability to deal with oxidative radicals) or cause damage to them (perhaps due to hydrogen peroxide produced by their catabolism). The observation that cellular polyamines are typically elevated in plants under both short-term as well as long- term abiotic stress conditions is consistent with the possibility of their dual effects, i.e., being protectors from as well as perpetrators of stress damage to the cells. The observed increase in tolerance of plants to abiotic stress when their cellular contents are elevated by either exogenous treatment with polyamines or through genetic engineering with genes encoding polyamine biosynthetic enzymes is indicative of a protective role for them. However, through their catabolic production of hydrogen peroxide and acrolein, both strong oxidizers, they can potentially be the cause of cellular harm during stress. In fact, somewhat enigmatic but strong positive relationship between abiotic stress and foliar polyamines has been proposed as a potential biochemical marker of persistent environmental stress in forest trees in which phenotypic symptoms of stress are not yet visible. Such markers may help forewarn forest managers to undertake amelioration strategies before the appearance of visual symptoms of stress and damage at which stage it is often too late for implementing strategies for stress remediation and reversal of damage. This review provides a comprehensive and critical evaluation of the published literature on interactions between abiotic stress and polyamines in plants, and examines the experimental strategies used to understand the functional significance of this relationship with the aim of improving plant productivity, especially under conditions of abiotic stress.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMinocha, Rakesh; Majumdar, Rajtilak; Minocha, Subhash C. 2014. Polyamines and abiotic stress in plants: a complex relationship Frontiers in Plant Science. 5: article 175.
Keywordsarginine, biochemical markers, gamma-aminobutyricacid, glutamate, ornithine, proline, reactive oxygen species, stress priming
- Hydrogen peroxide : an environmentally friendly but dangerous bleaching chemical
- Ornithine: the overlooked molecule in the regulation of polyamine metabolism
- Genetic variation of lodgepole pine physical and chemical defenses associated with each step in host selection behavior sequence by mountain pine beetle
XML: View XML