Maintenance respiration

Maintenance respiration

Maintenance respiration (or maintenance energy) refers to metabolism occurring in an organism that is needed to maintain that organism in a healthy, living state. It is distinguished from growth respiration.

In plants

Maintenance respiration in plants refers to the carbon dioxide (CO2) released, or oxygen (O2) consumed, during the generation of usable energy (mainly ATP, NADPH, and NADH) and metabolic intermediates used for (i) resynthesis of compounds that undergo renewal (turnover) in the normal process of metabolism (examples are enzymatic proteins, ribonucleic acids, and membrane lipids); (ii) maintenance of chemical gradients of ions and metabolites across cellular membranes that are necessary for cellular integrity and plant health; and (iii) operation of metabolic processes involved in physiological adjustment (i.e., acclimation) to a change in the plant's environment.[1][2][3] The metabolic costs of the repair of injury from biotic or abiotic stress may also be considered a part of maintenance respiration.[1]

Maintenance respiration is essential for biological health and growth of plants. It is estimated that about half of the respiration carried out by terrestrial plants during their lifetime is for the support of maintenance processes.[4] Because typically more than half of global terrestrial plant photosynthesis (or gross primary production) is used for plant respiration,[3] more than one quarter of global terrestrial plant photosynthesis is presumably consumed in maintenance respiration.

Maintenance respiration is a key component of most physiologically based mathematical models of plant growth, including models of crop growth and yield and models of ecosystem primary production and carbon balance.[5][6][7]


  1. ^ a b Penning de Vries FWT (1975). "The cost of maintenance processes in plant cells", Annals of Botany, 39:77-92.
  2. ^ Lambers H, Szaniawski RK, de Visser R (1983). "Respiration for growth, maintenance and ion uptake. An evaluation of concepts, methods, values and their significance", Physiologia Plantarum, 58:556-563.
  3. ^ a b Amthor JS (2000). "The McCree--de Wit--Penning de Vries--Thornley Respiration Paradigms: 30 Years Later", Annals of Botany, 86:1-20.
  4. ^ Amthor JS (1989). Respiration and Crop Productivity, Springer-Verlag.
  5. ^ Canell MGR, Thornley JHM (2000) "Modelling the components of plant respiration: some guiding principles". Annals of Botany 85:45-54.
  6. ^ Amthor JS, and 12 others (2001). "Boreal forest CO2 exchange and evapotranspiration predicted by nine ecosystem process models: intermodel comparisons and relationships to field measurements". Journal of Geophysical Research 106:33,623-33,648.
  7. ^ Thornley JHM, France J (2007). Mathematical Models in Agriculture, CABI, Wallingford, UK.
  • Thornley JHM (1970). "Respiration, growth and maintenance in plants", Nature, 35:721-728.
  • Pirt SJ (1965) "The maintenance energy of bacteria in growing cultures". Proceedings of the Royal Society of London, Series B 163:224-231.

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Maintenance of an organism — is the collection of processes to stay alive, excluding production processes. The Dynamic Energy Budget theory delineates two classes Somatic maintenance. This comprises mainly the turnover of structural mass (mainly proteins) and the maintenance …   Wikipedia

  • Maintenance — For the Wikipedia maintenance, see Wikipedia:Maintenance. Maintenance may refer to: Biological science Maintenance respiration Maintenance of an organism Non technical maintenance: High maintenance, slang expression Child support or alimony, also …   Wikipedia

  • RESPIRATION — La physiologie comparée de la respiration a pour objet l’étude des mécanismes assurant les échanges de l’oxygène et du dioxyde de carbone (gaz carbonique) entre les organismes vivants et le milieu, aqueux et aérien, dans lequel ils vivent.… …   Encyclopédie Universelle

  • Respiration — is the act of inhaling and exhaling air in order to exchange oxygen for carbon dioxide. * * * 1. A fundamental process of life, characteristic of both plants and animals, in which oxygen is used to oxidize organic fuel molecules, providing a… …   Medical dictionary

  • respiration — respirational, adj. /res peuh ray sheuhn/, n. 1. the act of respiring; inhalation and exhalation of air; breathing. 2. Biol. a. the sum total of the physical and chemical processes in an organism by which oxygen is conveyed to tissues and cells,… …   Universalium

  • Cellular respiration — in a typical eukaryotic cell. Cellular respiration is the set of the metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release… …   Wikipedia

  • On Youth, Old Age, Life and Death, and Respiration — (Greek: Περὶ νεότητος καὶ γήρως, καὶ ζωῆς καὶ θανάτου, καὶ ἀναπνοῆς, Latin: De Juventute et Senectute, De Vita et Morte, De Respiratione) is one of the short treatises that make up Aristotle s Parva Naturalia. Contents 1 Structure and contents… …   Wikipedia

  • artificial respiration — ► NOUN ▪ the restoration or maintenance of someone s breathing by manual, mechanical, or mouth to mouth methods …   English terms dictionary

  • artificial respiration — n. the maintenance of breathing by artificial means, as by forcing breath into the mouth or by creating and relaxing pressure externally on the chest cavity at regular intervals …   English World dictionary

  • artificial respiration — noun the restoration or maintenance of a person s breathing by manual, mechanical, or mouth to mouth methods …   English new terms dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.