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Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: The role of the alternative oxidase pathway
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
2002 (English)In: Bragantia, Vol. 61, no 2, 111-114 p.Article in journal (Refereed) Published
Abstract [en]

Effects of higher temperatures on respiration and activity of alternative oxidase (AOX) were studied in mature leaves of Ajuga reptans L. and Rhodiola rosea L. Total respiration in both A. reptans and R. rosea increased exponentially with the increasing temperature of 10°C to 35°C. Respiration in the presence of benzhydroxamic acid (BHAM) also increased exponentially in accordance with the increasing temperature in the leaves of both A. reptans and R. rosea. Relative activity of the alternative pathway decreased significantly in the leaves of A. reptans with increasing temperatures. However, an increase in the relative activity of the alternative pathway was detected in the leaves of R. rosea. Thermoresistance of the alternative respiratory pathway was considered to be higher in R. rosea compared to A. reptans. We suppose that A. reptans and R. rosea have different mechanisms regulating partitioning of electrons to the alternative respiratory pathway.

Place, publisher, year, edition, pages
2002. Vol. 61, no 2, 111-114 p.
Keyword [en]
Alternative oxidase, Alternative respiratory pathway, Leaves, Respiration, Temperature
Identifiers
URN: urn:nbn:se:miun:diva-29046Scopus ID: 2-s2.0-0347658859OAI: oai:DiVA.org:miun-29046DiVA: diva2:1033089
Note

Article

Available from: 2016-10-05 Created: 2016-10-05 Last updated: 2016-10-10Bibliographically approved

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