Response of potato tubers to hypoxia followed by re-aeration

Pfister-Sieber, Miriam; Brändle, Roland (1995). Response of potato tubers to hypoxia followed by re-aeration. Potato research, 38(3), pp. 231-239. European Association for Potato Research 10.1007/BF02359905

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Potato tubers kept under hypoxia (1%) showed improved viability in comparison to anoxia, which was associated with the maintenance of intermediate adenylate energy charge values (A.E.C. = 0.6) and stable adenylate pools at 50% of the initial levels. Re-admission of oxygen to the tuber resulted in an almost full recovery of adenylate energy charge and total adenylates after up to 3 days of hypoxic pretreatment. Tubers exhibited a mixed fermentation. The high lactate. ethanol and acetaldehyde levels proved to be non toxic. Ethanol was degraded to acetaldehyde during re-aeration. Posthypoxic lipid peroxidation was indicated by malondialdehyde and ethane formation. Both products occurred with a temporary delay and in lower amounts compared to post-anoxia. Ethylene release was also considerably smaller. Severe hypoxia and posthypoxia postponed tissue death compared to anoxia. Survival was correlated with an improved energy supply which stabilized membranes.

Item Type:

Journal Article (Original 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:

0014-3065

Publisher:

European Association for Potato Research

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

05 Jul 2017 10:31

Last Modified:

14 Nov 2017 15:10

Publisher DOI:

10.1007/BF02359905

Uncontrolled Keywords:

adenylate energy charge; fermentation; lipid peroxidation; posthypoxia; Solanum tuberosum L

BORIS DOI:

10.7892/boris.91768

URI:

https://boris.unibe.ch/id/eprint/91768

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