|
Plant Physiol, March 2000, Vol. 122, pp. 915-924
Leaf Respiration of Snow Gum in the Light and Dark. Interactions
between Temperature and Irradiance1
Owen K.
Atkin,*2
John R.
Evans,
Marilyn C.
Ball,
Hans
Lambers, and
Thijs L.
Pons
Environmental Biology (O.K.A., J.R.E.) and Ecosystem Dynamics
(O.K.A., M.C.B.) Groups, Research School of Biological Sciences, The
Australian National University, Canberra, 0200 Australian Capital
Territory, Australia; Department of Plant Ecology and Evolutionary
Biology, Utrecht University, P.O. Box 800.84, 3508 TB Utrecht, The
Netherlands (H.L., T.L.P.); and Plant Sciences, Faculty of Agriculture,
The University of Western Australia, Nedlands, Western Australia 6907, Australia (H.L.)
We
investigated the effect of temperature and irradiance on leaf
respiration (R, non-photorespiratory mitochondrial
CO2 release) of snow gum (Eucalyptus
pauciflora Sieb. ex Spreng). Seedlings were hydroponically
grown under constant 20°C, controlled-environment conditions.
Measurements of R (using the Laisk method)
and photosynthesis (at 37 Pa CO2) were made at several
irradiances (0-2,000 µmol photons m 2 s1)
and temperatures (6°C-30°C). At 15°C to 30°C, substantial
inhibition of R occurred at 12 µmol photons
m2 s1, with maximum inhibition occurring at
100 to 200 µmol photons m2 s1. Higher
irradiance had little additional effect on R at these moderate temperatures. The irradiance necessary to maximally inhibit R at 6°C to 10°C was lower than that at 15°C to
30°C. Moreover, although R was inhibited by low
irradiance at 6°C to 10°C, it recovered with progressive increases
in irradiance. The temperature sensitivity of R was
greater in darkness than under bright light. At 30°C and high
irradiance, light-inhibited rates of R represented 2%
of gross CO2 uptake (vc),
whereas photorespiratory CO2 release was approximately 20%
of vc. If light had not inhibited leaf
respiration at 30°C and high irradiance, R would have
represented 11% of vc. Variations in light
inhibition of R can therefore have a substantial impact
on the proportion of photosynthesis that is respired. We conclude that
the rate of R in the light is highly variable, being dependent on irradiance and temperature.
1
This work was funded by an Australian Research
Council Postdoctoral Fellowship Award to O.K.A. Financial assistance to
O.K.A. was also provided by the Australian Department of Industry and Technology Bilateral Science and Technology Program.
2
Present address: Department of Biology, The
University of York, P.O. Box 373, York YO10 5YW, UK.
*
Corresponding author; e-mail oka1{at}york.ac.uk; fax
44-1904-432860.
© 2000 American Society of Plant Physiologists
This article has been cited by other articles:
|
|
|
|
 
O. K. Atkin and D. Macherel
The crucial role of plant mitochondria in orchestrating drought tolerance
Ann. Bot.,
February 1, 2009;
103(4):
581 - 597.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Studart-Guimaraes, A. Fait, A. Nunes-Nesi, F. Carrari, B. Usadel, and A. R. Fernie
Reduced Expression of Succinyl-Coenzyme A Ligase Can Be Compensated for by Up-Regulation of the {gamma}-Aminobutyrate Shunt in Illuminated Tomato Leaves
Plant Physiology,
November 1, 2007;
145(3):
626 - 639.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
A. Ohsumi, A. Hamasaki, H. Nakagawa, H. Yoshida, T. Shiraiwa, and T. Horie
A Model Explaining Genotypic and Ontogenetic Variation of Leaf Photosynthetic Rate in Rice (Oryza sativa) Based on Leaf Nitrogen Content and Stomatal Conductance
Ann. Bot.,
February 1, 2007;
99(2):
265 - 273.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Warren and E Dreyer
Temperature response of photosynthesis and internal conductance to CO2: results from two independent approaches
J. Exp. Bot.,
September 1, 2006;
57(12):
3057 - 3067.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
G. Fila, F.-W. Badeck, S. Meyer, Z. Cerovic, and J. Ghashghaie
Relationships between leaf conductance to CO2 diffusion and photosynthesis in micropropagated grapevine plants, before and after ex vitro acclimatization
J. Exp. Bot.,
August 1, 2006;
57(11):
2687 - 2695.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. Y. Tang, R. E. Zielinski, A. R. Zangerl, A. R. Crofts, M. R. Berenbaum, and E. H. DeLucia
The differential effects of herbivory by first and fourth instars of Trichoplusia ni (Lepidoptera: Noctuidae) on photosynthesis in Arabidopsis thaliana
J. Exp. Bot.,
February 1, 2006;
57(3):
527 - 536.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
O. K. Atkin, B. R. Loveys, L. J. Atkinson, and T. L. Pons
Phenotypic plasticity and growth temperature: understanding interspecific variability
J. Exp. Bot.,
January 1, 2006;
57(2):
267 - 281.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. R. Warren
The photosynthetic limitation posed by internal conductance to CO2 movement is increased by nutrient supply
J. Exp. Bot.,
October 1, 2004;
55(406):
2313 - 2321.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
F. Carrari, A. Nunes-Nesi, Y. Gibon, A. Lytovchenko, M. E. Loureiro, and A. R. Fernie
Reduced Expression of Aconitase Results in an Enhanced Rate of Photosynthesis and Marked Shifts in Carbon Partitioning in Illuminated Leaves of Wild Species Tomato
Plant Physiology,
November 1, 2003;
133(3):
1322 - 1335.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Piel, E. Frak, X. Le Roux, and B. Genty
Effect of local irradiance on CO2 transfer conductance of mesophyll in walnut
J. Exp. Bot.,
December 1, 2002;
53(379):
2423 - 2430.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
O. K. Atkin, Q. Zhang, and J. T. Wiskich
Effect of Temperature on Rates of Alternative and Cytochrome Pathway Respiration and Their Relationship with the Redox Poise of the Quinone Pool
Plant Physiology,
January 1, 2002;
128(1):
212 - 222.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. S. Amthor, G. W. Koch, J. R. Willms, and D. B. Layzell
Leaf O2 uptake in the dark is independent of coincident CO2 partial pressure
J. Exp. Bot.,
November 1, 2001;
52(364):
2235 - 2238.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
X. Wang, J. D. Lewis, D. T. Tissue, J. R. Seemann, and K. L. Griffin
Effects of elevated atmospheric CO2 concentration on leaf dark respiration of Xanthium strumarium in light and in darkness
PNAS,
February 27, 2001;
98(5):
2479 - 2484.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
