No difference in leaf respiration rates among temperate, subarctic, and arctic species grown under controlled conditions

1996 ◽  
Vol 74 (2) ◽  
pp. 317-320 ◽  
Author(s):  
Donald E. Collier
Keyword(s):  
Growth Temperature ◽  
Alternative Pathway ◽  
Geographic Origin ◽  
Temperature Acclimation ◽  
Temperate Species ◽  
Leaf Respiration ◽  
Arctic Species ◽  
Respiration Rates ◽  
Controlled Conditions ◽  
Plant Groups

To test the theory that leaf respiration rates are inherently higher in arctic species compared with temperate species, a total of 35 species from temperate, subarctic, and arctic locations were grown under controlled conditions and leaf respiration rates were measured. Regardless of growth temperature (either 10 or 20 °C), leaf respiration rates measured at the growth temperature were independent of a species' geographic origin. In addition, salicylhydroxamic acid inhibited the alternative oxidase equally in all groups of species. Acclimation of leaf respiration to temperature was observed in all three geographic plant groups, i.e., leaf respiration rates of 20 °C-grown plants were not significantly different than rates of 10 °C-grown plants when respiration was measured at the growth temperature. These results suggest that arctic species do not have inherently high leaf respiration rates, higher alternative pathway respiration, or greater temperature acclimation ability compared with temperate species. Keywords: alternative pathway respiration, arctic, leaf respiration, subarctic, temperate, temperature.

Rapid temperature acclimation of leaf respiration rates in Quercus alba and Quercus rubra

2003 ◽  
Vol 23 (14) ◽  
pp. 969-976 ◽  
Author(s):  
P. V. Bolstad ◽  
P. Reich ◽  
T. Lee
Keyword(s):  
Quercus Rubra ◽  
Temperature Acclimation ◽  
Quercus Alba ◽  
Leaf Respiration ◽  
Respiration Rates ◽  
Rapid Temperature

scholarly journals Effect of Growth Temperature on Aster Flower Development

HortScience ◽  
2000 ◽  
Vol 35 (1) ◽  
pp. 28-29 ◽  
Author(s):  
M. Oren-Shamir ◽  
L. Shaked-Sachray ◽  
A. Nissim-Levi ◽  
D. Weiss
Keyword(s):  
Growth Temperature ◽  
Flower Development ◽  
Flower Longevity ◽  
Dramatic Effect ◽  
Controlled Conditions ◽  
Higher Temperature ◽  
Temperature Controlled ◽  
Lower Temperature

Little is known about the effect of growth temperature on Aster (Compositae, Asteraceae) flower development. In this study, we report on this effect for two aster lines, `Suntana' and `Sungal'. Growth temperature had a dramatic effect on the duration of flower development, ranging from 22 days for plants growing at 29 °C up to 32 days for plants grown at 17 °C. Flower longevity was ≈40% shorter under the higher temperature for both lines. Growth temperature also affected flowerhead form: `Suntana' flowerhead diameter was 20% larger at 17 °C than at 29 °C. The number of `Sungal' florets per flowerhead was four times greater at the lower temperature. Shading (30%) under temperature-controlled conditions had no effect on any of the parameters measured. For plants grown outdoors, our results suggest that shading plants may increase quality by reducing the growth temperature.

scholarly journals Characterization and Analyses of Hydrophobic Clusters, Acetylation and Myristoylation Sites in Plant Glutathione Peroxidase Sequences

2014 ◽  
Vol 28 ◽  
pp. 27-33
Author(s):  
Sayak Ganguli ◽  
Anisha Polley ◽  
Abhijit Datta
Keyword(s):  
Glutathione Peroxidase ◽  
Alternative Pathway ◽  
Vascular Plant ◽  
Radical Scavenging ◽  
Primary Source ◽  
Land Plant ◽  
Defense Strategies ◽  
Glutathione Peroxidases ◽  
Plant Groups ◽  
Scavenging Enzymes

Incomplete reduction of oxygen molecules is the primary source for the formation of reactive oxygen species (ROS) during cytosolic metabolism or mitochondrial respiration. These phenomenons may be as a result of biotic or abiotic stress. Exposure to exogenous stimuli such as radiation might be an alternative pathway of ROS production. Thus plants require counter defense strategies to combat the increase of this toxic molecular build up in its cell cytoplasm. As a result they have devised an army of free radical scavenging enzymes which enable them to dissipate the oxidative stress imposed by the accumulation of these toxic moieties. Glutathione Peroxidase forms an important part of this arms race along with several catalases and organelle specific enzymes such as superoxide dismutase. Plant glutathione peroxidases (GPXs) have been studied exclusively for their evolutionary lineages since they represent a hybrid class of molecules in context of the presence and absence of selenocysteine at their catalytic centres, the former situation predominant in non vascular plant groups while the later a predominant feature of vascular plants. This analysis focuses on three important aspects of protein structure analyses – hydrophobic cluster analyses for identification of homologues, and acetylation and myristoylation sites which provide us with information regarding the post translational modifications of a particular protein group. Specific patterns of clusters along with acetylation and myristoylation site frequencies were obtained which indicate that GPXs of non vascular plant members possess less chances of getting myristoylated while acetylation was predominant in most land plant lineages but absent in aquatic members.

Temperature acclimation of leaf respiration differs between marsh and mangrove vegetation in a coastal wetland ecotone

2021 ◽  
Author(s):  
Matthew A. Sturchio ◽  
Jeff Chieppa ◽  
Samantha K. Chapman ◽  
Gabriela Canas ◽  
Michael J. Aspinwall
Keyword(s):  
Coastal Wetland ◽  
Temperature Acclimation ◽  
Leaf Respiration ◽  
Mangrove Vegetation

Thermal acclimation of respiration but not photosynthesis in Pinus radiata

2008 ◽  
Vol 35 (6) ◽  
pp. 448 ◽  
Author(s):  
Lai Fern Ow ◽  
David Whitehead ◽  
Adrian S. Walcroft ◽  
Matthew H. Turnbull
Keyword(s):  
Pinus Radiata ◽  
Growth Temperature ◽  
Dark Respiration ◽  
Temperature Acclimation ◽  
Short Term ◽  
Photosynthesis And Respiration ◽  
Term Response ◽  
N Status ◽  
Respiratory Responses

Pinus radiata L. were grown in climate-controlled cabinets under three night/day temperature treatments, and transferred between treatments to mimic changes in growth temperature. The objective was to determine the extent to which dark respiration and photosynthesis in pre-existing and new needles acclimate to changes in growth temperatures. We also assessed whether needle nitrogen influenced the potential for photosynthetic and respiratory acclimation, and further assessed if short-term (instantaneous, measured over a few hours) respiratory responses are accurate predictors of long-term (acclimated, achieved in days–weeks) responses of respiration to changing temperature. Results show that respiration displayed considerable potential for acclimation. Cold and warm transfers resulted in some acclimation of respiration in pre-existing needles, but full acclimation was displayed only in new needles formed at the new growth temperature. Short-term respiratory responses were poor predictors of the long-term response of respiration due to acclimation. There was no evidence that photosynthesis in pre-existing or new needles acclimated to changes in growth temperature. N status of leaves had little impact on the extent of acclimation. Collectively, our results indicate that there is little likelihood that respiration would be significantly stimulated in this species as night temperatures increase over the range of 10–20°C, but that inclusion of temperature acclimation of respiration would in fact lead to a shift in the balance between photosynthesis and respiration in favour of carbon uptake.

Seasonal variation of leaf respiration and the alternative pathway in field-grown Populus×canadensis

2011 ◽  
Vol 141 (4) ◽  
pp. 332-342 ◽  
Author(s):  
Stephanie Y. Searle ◽  
Matthew H. Turnbull
Keyword(s):  
Seasonal Variation ◽  
Alternative Pathway ◽  
Leaf Respiration

A field study on the respiration rates in the leaves of temperate plants

1989 ◽  
Vol 67 (12) ◽  
pp. 3478-3481 ◽  
Author(s):  
Donald E. Collier ◽  
W. Raymond Cummins
Keyword(s):  
Field Study ◽  
Key Words ◽  
Dark Respiration ◽  
Alternative Pathway ◽  
Salicylhydroxamic Acid ◽  
Respiration Rates ◽  
Understory Herbs ◽  
Fluctuating Environments ◽  
Cyanide Resistance ◽  
Physiological Flexibility

The field respiration rates of leaves, in terms of total dark respiration, cytochrome (cyanide sensitive) pathway respiration, and alternative (salicylhydroxamic acid sensitive) pathway respiration, were measured in 10 temperate species. Five spring understory herbs and five ruderal species were used. All species displayed resistance to cyanide and sensitivity to salicylhydroxamic acid, indicating a capacity and some engagement of the alternative pathway. In comparison with reports on the field respiration rates of leaves in arctic and boreal species, the temperate plants had significantly less O2 uptake along both respiratory pathways. Rates of alternative pathway respiration in this study were comparable with those reported in the leaves of crop plants. In a comparison of respiration rates between the ruderal and understory species, the ruderal species had significantly greater activity along the alternative pathway. The ruderals also had a significantly greater capacity for the alternative pathway. It is proposed that the presence of the alternative pathway somehow allows physiological flexibility in the ruderals, and this in turn aids in their survival in fluctuating environments. Key words: alternative pathway, cyanide resistance, respiration, ruderal, understory.

Response of Soybeans (Glycine max) and Four Broadleaf Weeds to Reduced Irradiance

Weed Science ◽  
1989 ◽  
Vol 37 (4) ◽  
pp. 570-574 ◽  
Author(s):  
Edward W. Stoller ◽  
Randy A. Myers
Keyword(s):  
Glycine Max ◽  
Leaf Area ◽  
Leaf Respiration ◽  
Common Lambsquarters ◽  
Eastern Black Nightshade ◽  
Black Nightshade ◽  
Respiration Rates ◽  
Growth Irradiance ◽  
Soybean Plants ◽  
Root:Shoot Ratios

Experiments were conducted to determine adaptation characteristics to reduced irradiance of velvetleaf, common lambsquarters, eastern black nightshade, tumble pigweed, and soybean. Plants were grown to the 5- to 8-leaf stage in the greenhouse at ambient radiation (850 μE·m–2·s–1), and 26 and 13% of ambient radiation. Tumble pigweed, a C4plant, had the highest light-saturated photosynthetic rates at all growth irradiances, while common lambsquarters had the highest rates of the four C3species. All species adjusted to reduced irradiance by decreasing light-saturated photosynthesis, leaf respiration rates, root:shoot ratios, and leaf densities, while increasing leaf area ratios (LAR)3. As growth irradiance was reduced, support tissues (roots, stems, and petioles):leaf ratios did not change for common lambsquarters or velvetleaf, increased for soybean, and decreased for eastern black nightshade and tumble pigweed, indicating superior adaptation of the latter two species for efficient light harvesting at reduced growth irradiances. Of these five species, eastern black nightshade had the lowest respiration rate, the highest LAR, and the lowest support:leaf ratio for optimum adaptation to shaded environments.

scholarly journals Metabolic regulation of leaf respiration and alternative pathway activity in response to phosphate supply

2001 ◽  
Vol 24 (2) ◽  
pp. 205-215 ◽  
Author(s):  
M. A. Gonzàlez-Meler ◽  
L. Giles ◽  
R. B. Thomas ◽  
J. N. Siedow
Keyword(s):  
Metabolic Regulation ◽  
Alternative Pathway ◽  
Leaf Respiration ◽  
Pathway Activity ◽  
Phosphate Supply

scholarly journals Variation in Leaf Respiration Rates at Night Correlates with Carbohydrate and Amino Acid Supply

2017 ◽  
Vol 174 (4) ◽  
pp. 2261-2273 ◽  
Author(s):  
Brendan M. O’Leary ◽  
Chun Pong Lee ◽  
Owen K. Atkin ◽  
Riyan Cheng ◽  
Tim B. Brown ◽  
...  
Keyword(s):  
Amino Acid ◽  
Leaf Respiration ◽  
Respiration Rates
Sign in / Sign up

Export Citation Format

Share Document