ENGLISH

Plant Respiration: From Cell to Ecosystem

By Hans Lambers , Sharon A. Robinson , Miquel Ribas-Carbo (auth.) , Miquel Ribas-Carbo (eds.)

Book information

Publisher
Springer Netherlands
Year
2005
ISBN
1402035888, 9781402035883
DOI
10.1007/1-4020-3589-6
Open Library ID
OL8371538M
Language
english
Format
PDF
Filesize
7 MB (7719511 bytes)
Series
Advances in Photosynthesis and Respiration 18
Edition
1
Pages
250\265
Time added
2011-06-04 13:46:07
Plant Sciences; Agriculture; Plant Ecology; Plant

Description

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.

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