What Is Stress? Dose-response effects in commonly used in vitro stress assays

Claeys, H., Van Landeghem, S., Dubois, M., Maleux, K., Inzé, D. (June 2014) What Is Stress? Dose-response effects in commonly used in vitro stress assays. Plant Physiology, 165 (2). pp. 519-527. ISSN 15322548

URL: http://www.ncbi.nlm.nih.gov/pubmed/24710067
DOI: 10.1104/pp.113.234641

Abstract

In vitro stress assays are commonly used to study the responses of plants to abiotic stress and to assess stress tolerance. A literature review reveals that most studies use very high stress levels and measure criteria such as germination, plant survival, or the development of visual symptoms such as bleaching. However, we show that these parameters are indicators of very severe stress, and such studies thus only provide incomplete information about stress sensitivity in Arabidopsis (Arabidopsis thaliana). Similarly, transcript analysis revealed that typical stress markers are only induced at high stress levels in young seedlings. Therefore, tools are needed to study the effects of mild stress. We found that the commonly used stress-inducing agents mannitol, sorbitol, NaCl, and hydrogen peroxide impact shoot growth in a highly specific and dose-dependent way. Therefore, shoot growth is a sensitive, relevant, and easily measured phenotype to assess stress tolerance over a wide range of stress levels. Finally, our data suggest that care should be taken when using mannitol as an osmoticum. © 2014 American Society of Plant Biologists. All Rights Reserved.

Item Type: Paper
Subjects: organism description > plant > Arabidopsis
diseases & disorders > physiological stress
organism description > plant
CSHL Authors:
Communities: CSHL labs > Jackson lab
Depositing User: Matt Covey
Date: June 2014
Date Deposited: 27 Jun 2014 15:27
Last Modified: 27 Jun 2014 15:27
PMCID: PMC4044843
Related URLs:
URI: http://repository.cshl.edu/id/eprint/30347

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