Aspects of plant behaviour under anoxia and post-anoxia

Pfister-Sieber, M.; Brändle, Roland (1994). Aspects of plant behaviour under anoxia and post-anoxia. Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences, 102, pp. 313-324. Royal Society of Edinburgh Scotland Foundation 10.1017/S0269727000014305

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All plants are able to survive anoxic periods, but the degree of tolerance shows large variation. The main injuries related to anoxia are eventually due to changes in energy metabolism. Low energy charge values indicate a cessation of many ATP consuming processes. Sugar starvation, lactic acid fermentation and proton release from leaky vacuoles are responsible for cell death. Long-term anoxia tolerance is dependent on storage products in the vicinity of sinks, on an adequate control of glycolysis, synthesis of essential proteins, and stability of membranes and organelles. However, no fundamental differences between the metabolic pathways of tolerant and non-tolerant tissues are known. It is rather a question of minor changes and the regulation of anaerobic metabolism. Re-exposure of anoxic tissues to air may even be more detrimental than anoxia itself. These injuries are mainly due to enhanced radical generation. Lipid peroxidation processes lead to membrane damage, disintegration, and leakage of solutes. Under natural conditions plants are equipped with radical-detoxifying systems (SOD, peroxidases and antioxidants). Natural detoxifying systems can be reduced in non-adapted plants under anoxia and they become more sensitive to post-anoxic damage. In addition, the rapid conversion of ethanol to extremely toxic acetaldehyde seems to be a cause of tissue injury and death.

Item Type:

Journal Article (Review Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Anoxia / Postanoxia [discontinued]
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Brändle, Roland

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0269-7270

Publisher:

Royal Society of Edinburgh Scotland Foundation

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

10 Aug 2018 11:08

Last Modified:

24 Oct 2019 07:24

Publisher DOI:

10.1017/S0269727000014305

BORIS DOI:

10.7892/boris.119107

URI:

https://boris.unibe.ch/id/eprint/119107

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