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Adaption to Photosynthesis and Diurnal Oscillation of Root Respiration Rates for Lolium multiflorum

Adaption to Photosynthesis and Diurnal Oscillation of Root Respiration Rates for Lolium multiflorum Continuous measurements of CO2‐release from intact roots of Lolium multiflorum growing in nutrient solution were carried out during 3–7 weeks. Periods of days with high level of irradiance and periods with low level alternated. Root respiration rate was found to depend on photosynthesis. The change in root respiration, induced by change in photosynthesis, was delayed. The root respiration rate showed diurnal fluctuations with two characteristic peaks occurring 4–6 and 14–16 hours after onset of the photoperiod. The amplitudes increased with increasing photosynthesis. The frequencies were independent of the length of photoperiod, when this varied between 8 and 16 hours. The fluctuations are discussed in relation to diurnal fluctuations in protein synthesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physiologia Plantarum Wiley

Adaption to Photosynthesis and Diurnal Oscillation of Root Respiration Rates for Lolium multiflorum

Physiologia Plantarum , Volume 39 (4) – Apr 1, 1977

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References (18)

Publisher
Wiley
Copyright
Copyright © 1977 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0031-9317
eISSN
1399-3054
DOI
10.1111/j.1399-3054.1977.tb01883.x
Publisher site
See Article on Publisher Site

Abstract

Continuous measurements of CO2‐release from intact roots of Lolium multiflorum growing in nutrient solution were carried out during 3–7 weeks. Periods of days with high level of irradiance and periods with low level alternated. Root respiration rate was found to depend on photosynthesis. The change in root respiration, induced by change in photosynthesis, was delayed. The root respiration rate showed diurnal fluctuations with two characteristic peaks occurring 4–6 and 14–16 hours after onset of the photoperiod. The amplitudes increased with increasing photosynthesis. The frequencies were independent of the length of photoperiod, when this varied between 8 and 16 hours. The fluctuations are discussed in relation to diurnal fluctuations in protein synthesis.

Journal

Physiologia PlantarumWiley

Published: Apr 1, 1977

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