Energy Metabolism in Rhizomes of Acorus calamus (L.) and in Tubers of Solanum tuberosum (L.) With Regard to their Anoxia Tolerance

Sieber, Mirjam; Brändle, Roland (1991). Energy Metabolism in Rhizomes of Acorus calamus (L.) and in Tubers of Solanum tuberosum (L.) With Regard to their Anoxia Tolerance. Botanica acta, 104(4), pp. 279-282. Thieme 10.1111/j.1438-8677.1991.tb00230.x

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Rhizomes of the marsh plant Acorus calamus (L.) and tubers of the flooding-intolerant Solanum tuberosum (L.) var. Bintje, both kept under strict anoxia, differ markedly in their fermentation properties. The fermentation capacities as measured by ADH and LDH activities and their respective product concentrations were estimated. While rhizomes of Acorus calamus, having high ADH and low LDH activities, accumulate mainly ethanol, tubers of Solanum tuberosum tend towards lactic acid fermentation. The total amount of adenine nucleotides is quite stable in Acorus calamus, whereas they show a sharp decline in S. tuberosum during the first 6 h of anoxia. The adenylate energy charge of A. calamus recovers after a short initial drop (AEC > 0.8). AEC values of S. tuberosum decrease rapidly and remain at very low values (AEC approximately 0.3). Tuber tissues became soft and lost viability after about 48-72 h of anoxia at 25-degrees-C. This might be due to tissue acidification and impaired energy metabolism, but not to the lack of energy reserves. Energy metabolism of A. calamus is well adapted to anoxia.

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:

0932-8629

Publisher:

Thieme

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

14 Jun 2017 13:16

Last Modified:

14 Nov 2017 15:20

Publisher DOI:

10.1111/j.1438-8677.1991.tb00230.x

Uncontrolled Keywords:

Acorus calamus, adenylate energy charge, anoxia, fermentation, Solanum tuberosum.

BORIS DOI:

10.7892/boris.91772

URI:

https://boris.unibe.ch/id/eprint/91772

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