Thermal Acclimation of Dark Respiration in Coastal and Desert Populations of Isomeris arborea

1976 ◽  
Vol 96 (2) ◽  
pp. 462 ◽  
Author(s):  
Peter Tobiessen
Keyword(s):  
Dark Respiration ◽  
Thermal Acclimation ◽  
Isomeris Arborea

Acclimation of leaf dark respiration to nocturnal and diurnal warming in a semiarid temperate steppe

2013 ◽  
Vol 40 (11) ◽  
pp. 1159 ◽  
Author(s):  
Yonggang Chi ◽  
Ming Xu ◽  
Ruichang Shen ◽  
Shiqiang Wan
Keyword(s):  
Dark Respiration ◽  
Temperature Response ◽  
Terrestrial Ecosystems ◽  
Northern China ◽  
Thermal Acclimation ◽  
Nonstructural Carbohydrates ◽  
Temperate Steppe ◽  
Response Curves ◽  
Diurnal Warming ◽  
Leaf Dark Respiration

A better understanding of thermal acclimation of leaf dark respiration in response to nocturnal and diurnal warming could help accurately predict the changes in carbon exchange of terrestrial ecosystems under global warming, especially under the asymmetric warming. A field manipulative experiment was established with control, nocturnal warming (1800–0600 hours), diurnal warming (0600–1800 hours), and diel warming (24 h) under naturally fluctuating conditions in a semiarid temperate steppe in northern China in April 2006. Temperature response curves of in situ leaf dark respiration for Stipa krylovii Roshev. were measured at night (Rn) and after 30 min of darkness imposed in the daytime (Rd). Leaf nonstructural carbohydrates were determined before sunrise and at sunset. Results showed that Rn could acclimate to nocturnal warming and diurnal warming, but Rd could not. The decreases in Q10 (temperature sensitivity) of Rn under nocturnal-warming and diurnal warming regimes might be attributed to greater depletion of total nonstructural carbohydrates (TNC). The real-time and intertwined metabolic interactions between chloroplastic and mitochondrial metabolism in the daytime could affect the impacts of warming on metabolite pools and the distinct response of Rn and Rd to warming. Projection on climate change–carbon feedback under climate warming must account for thermal acclimation of leaf dark respiration separately by Rn and Rd.

scholarly journals Thermal acclimation of photosynthetic activity and Rubisco content in two hybrid poplar clones

2018 ◽  
Author(s):  
Lahcen Benomar ◽  
Mohamed. Taha Moutaoufik ◽  
Raed Elferjani ◽  
Nathalie Isabel ◽  
Annie DesRochers ◽  
...  
Keyword(s):  
Activation Energy ◽  
Stomatal Conductance ◽  
Growth Temperature ◽  
Dark Respiration ◽  
Hybrid Poplar ◽  
Rubisco Activase ◽  
Thermal Acclimation ◽  
Warm Condition ◽  
Poplar Clones ◽  
Two Hybrid

AbstractThe mechanistic bases of thermal acclimation of net photosynthetic rate (An) are still difficult to discern and empirical research remains limited, particularly for hybrid poplar. In the present study, we examined the contribution of a number of biochemical and biophysical traits on thermal acclimation of An for two hybrid poplar clones. We grew cuttings of Populus maximowiczii × Populus nigra (M×N) and Populus maximowiczii × Populus balsamifera (M×B) clones under two day/night temperature of 23°C/18°C and 33°C /27°C and under low and high soil nitrogen level. After 10 weeks, we measured leaf RuBisCO and RuBisCO activase (RCA) amounts and the temperature response of An, dark respiration (Rd), stomatal conductance, (gs), maximum carboxylation rate of CO2 (Vcmax) and photosynthetic electron transport rate (J). Results showed that a 10°C increase in growth temperature resulted in a shift in thermal optimum (Topt) of An of 6.2±1.6 °C and 8.0±1.2 °C for clone M×B and M×N respectively, and an increased An and gs at the growth temperature for clone M×B but not M×N. RuBisCO amount was increased by N level but was insensitive to growth temperature while RCA amount and the ratio of its short to long isoform was stimulated by warm condition for clone M×N and at low N for clone M×B. The activation energy of Vcmax and J decreased under warm condition for clone M×B and remain unchanged for clone M×N. Our study demonstrated the involvement of both RCA, activation energy of Vcmax and stomatal conductance in thermal acclimation of An.

scholarly journals Thermal acclimation of leaf dark respiration of beech seedlings experiencing summer drought in high and low light environments

2009 ◽  
Vol 30 (2) ◽  
pp. 214-224 ◽  
Author(s):  
J. Rodriguez-Calcerrada ◽  
O. K. Atkin ◽  
T. M. Robson ◽  
J. Zaragoza-Castells ◽  
L. Gil ◽  
...  
Keyword(s):  
Dark Respiration ◽  
Thermal Acclimation ◽  
Summer Drought ◽  
Low Light ◽  
Leaf Dark Respiration

scholarly journals Complete or overcompensatory thermal acclimation of leaf dark respiration in African tropical trees

2020 ◽  
Author(s):  
Myriam Mujawamariya ◽  
Maria Wittemann ◽  
Aloysie Manishimwe ◽  
Bonaventure Ntirugulirwa ◽  
Etienne Zibera ◽  
...  
Keyword(s):  
Dark Respiration ◽  
Tropical Trees ◽  
Thermal Acclimation ◽  
Leaf Dark Respiration

Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming

2019 ◽  
Vol 167 (2) ◽  
pp. 205-216 ◽  
Author(s):  
Carolina Sanhueza ◽  
Francisca Fuentes ◽  
Daniela Cortés ◽  
Luisa Bascunan‐Godoy ◽  
Patricia L. Sáez ◽  
...  
Keyword(s):  
Plant Species ◽  
Dark Respiration ◽  
Vascular Plant ◽  
Thermal Acclimation ◽  
Vascular Plant Species ◽  
Leaf Dark Respiration

scholarly journals Effects of Light and Nutrition Manipulations on Thermal Respiratory Acclimation and Nocturnal Dynamics of Leaf Dark Respiration

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Dylan N. Dillaway ◽  
Michael C. Tyree ◽  
John K. Jackson
Keyword(s):  
Dark Respiration ◽  
Temperature Response ◽  
Leaf Nitrogen ◽  
Thermal Acclimation ◽  
Natural Ecosystems ◽  
Respiratory Parameters ◽  
Leaf Dark Respiration ◽  
Thermal Changes ◽  
Growing Conditions ◽  
Carbohydrate Status

The ability of a plant to acclimate metabolically to thermal changes is necessary to maintain a positive carbon balance. It is likely that a plant’s acclimatory potential is a function of leaf nitrogen and/or leaf carbohydrate status. Two important issues assessed concerning leaf dark respiration (RD) were the effects of growth temperature, light, and fertilization on thermal respiratory acclimation and changes in respiratory parameters (indicative of acclimation) throughout the dark period. Soybean (Glycine max (L.) Merr.) plants were grown in greenhouses under a full factorial treatment arrangement of temperature, light, and nutrition. RD was measured at three temperatures to estimate respiratory parameters (cool respiration R13, warm respiration R25, and the temperature response of respiration EO) three times throughout the night (6 pm, 11 pm, and 4 am). Respiratory parameters did not differ throughout the night. Thermal acclimation was observed in warm grown plants under optimal growing conditions (i.e., high light and high fertilization); however, acclimation did not occur when limitations were imposed (i.e., shade or no fertilization). These findings suggest thermal acclimation will occur so long as plants do not undergo limitations. This may have major implications for natural ecosystems and may play a role in assessing an ecosystems resiliency to climate change.

scholarly journals Heatwave frequency and seedling death alter stress-specific emissions of volatile organic compounds in Aleppo pine

Oecologia ◽  
2021 ◽  
Author(s):  
Benjamin Birami ◽  
Ines Bamberger ◽  
Andrea Ghirardo ◽  
Rüdiger Grote ◽  
Almut Arneth ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Exchange ◽  
Organic Compounds ◽  
Stress Responses ◽  
Methyl Salicylate ◽  
Environmental Changes ◽  
Pinus Halepensis ◽  
Dark Respiration ◽  
Seedling Mortality ◽  
Volatile Organic

AbstractBiogenic volatile organic compounds (BVOC) play important roles in plant stress responses and can serve as stress indicators. While the impacts of gradual environmental changes on BVOCs have been studied extensively, insights in emission responses to repeated stress and recovery are widely absent. Therefore, we studied the dynamics of shoot gas exchange and BVOC emissions in Pinus halepensis seedlings during an induced moderate drought, two four-day-long heatwaves, and the combination of drought and heatwaves. We found clear stress-specific responses of BVOC emissions. Reductions in acetone emissions with declining soil water content and transpiration stood out as a clear drought indicator. All other measured BVOC emissions responded exponentially to rising temperatures during heat stress (maximum of 43 °C), but monoterpenes and methyl salicylate showed a reduced temperature sensitivity during the second heatwave. We found that these decreases in monoterpene emissions between heatwaves were not reflected by similar declines in their internal storage pools. Because stress intensity was extremely severe, most of the seedlings in the heat-drought treatment died at the end of the second heatwave (dark respiration ceased). Interestingly, BVOC emissions (methanol, monoterpenes, methyl salicylate, and acetaldehyde) differed between dying and surviving seedlings, already well before indications of a reduced vitality became visible in gas exchange dynamics. In summary, we could clearly show that the dynamics of BVOC emissions are sensitive to stress type, stress frequency, and stress severity. Moreover, we found indications that stress-induced seedling mortality was preceded by altered methanol, monoterpene, and acetaldehyde emission dynamics.

Sign in / Sign up

Export Citation Format

Share Document