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Respiration in photosynthetic cells
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).ORCID iD: 0000-0001-5151-5184
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2005 (English)In: Plant Respiration: From cell to ecosystem, Springer , 2005, 43-61 p.Chapter in book (Other academic)
Abstract [en]

Respiration in plants, as in all living organisms, is essential to provide metabolic energy and carbon skeletons for growth and maintenance. As such, respiration is an essential component of a plant’s carbon budget. Depending on species and environmental conditions, it consumes 25-75% of all the carbohydrates produced in photosynthesis – even more at extremely slow growth rates. Respiration in plants can also proceed in a manner that produces neither metabolic energy nor carbon skeletons, but heat. This type of respiration involves the cyanide-resistant, alternative oxidase; it is unique to plants, and resides in the mitochondria. The activity of this alternative pathway can be measured based on a difference in fractionation of oxygen isotopes between the cytochrome and the alternative oxidase. Heat production is important in some flowers to attract pollinators; however, the alternative oxidase also plays a major role in leaves and roots of most plants. A common thread throughout this volume is to link respiration, including alternative oxidase activity, to plant functioning in different environments.

Place, publisher, year, edition, pages
Springer , 2005. 43-61 p.
Identifiers
URN: urn:nbn:se:umu:diva-16009ISBN: 978-1-4020-3588-3 (print)OAI: oai:DiVA.org:umu-16009DiVA: diva2:155682
Available from: 2007-08-10 Created: 2007-08-10 Last updated: 2015-04-29Bibliographically approved

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Hurry, VaughanGardeström, Per
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