Characterization of photosynthetic acclimation in Phoenix dactylifera by a modified Arrhenius equation originally developed for leaf respiration

Kruse, Jörg; Adams, Mark A.; Kadinov, G.; Arab, Leila; Kreuzwieser, Jürgen; Al‐Farraj, Saleh A.; Schulze, Waltraud X.; Rennenberg, Heinz

doi:10.1007/s00468-016-1496-0

Cited by 13 publications

(19 citation statements)

References 106 publications

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“…Over all measurements in the present study, the δ‐parameter of (complex) leaf respiration was slightly negative (i.e., δ R = −3.6 kK 2 ; Figure a). Similar results were obtained by Noguchi et al (); Heskel et al (); and Kruse, Adams, et al (). Nonetheless, physiological factors causing δ R (or ΔC p ‡ of overall R) to assume values ˃0 are poorly understood (Noguchi et al, ).…”

Section: Discussionsupporting

confidence: 89%

“…In simple terms, ΔC p ‡ depends on the physical flexibility of the enzyme between ground and transition state and, for ΔC p ‡ ǂ 0, results in curvature in Arrhenius‐plots describing the temperature dependence of activation energy, that is, δ R . MMRT has been successfully applied to describe the temperature‐dependence of reactions catalyzed by extra‐cellular soil enzymes (Alster, Baas, Wallenstein, Johnson, & von Fischer, ) but is also applicable to more complex reactions such as soil‐ and leaf‐respiration (Liang et al, ; Schipper, Hobbs, Rutledge, & Arcus, ) and, most likely, also to leaf‐photosynthesis (Kruse, Adams, et al, ; Kruse, Alfarraj, et al, ).…”

Section: Methodsmentioning

confidence: 99%

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Three physiological parameters capture variation in leaf respiration of Eucalyptus grandis, as elicited by short‐term changes in ambient temperature, and differing nitrogen supply

Kruse¹,

Rennenberg²,

Adams

2018

Plant Cell & Environment

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We used instantaneous temperature responses of CO -respiration to explore temperature acclimation dynamics for Eucalyptus grandis grown with differing nitrogen supply. A reduction in ambient temperature from 23 to 19 °C reduced light-saturated photosynthesis by 25% but increased respiratory capacity by 30%. Changes in respiratory capacity were not reversed after temperatures were subsequently increased to 27 °C. Temperature sensitivity of respiration measured at prevalent ambient temperature varied little between temperature treatments but was significantly reduced from ~105 kJ mol when supply of N was weak, to ~70 kJ mol when it was strong. Temperature sensitivity of respiration measured across a broader temperature range (20-40 °C) could be fully described by 2 exponent parameters of an Arrhenius-type model (i.e., activation energy of respiration at low reference temperature and a parameter describing the temperature dependence of activation energy). These 2 parameters were strongly correlated, statistically explaining 74% of observed variation. Residual variation was linked to treatment-induced changes in respiration at low reference temperature or respiratory capacity. Leaf contents of starch and soluble sugars suggest that respiratory capacity varies with source-sink imbalances in carbohydrate utilization, which in combination with shifts in carbon-flux mode, serve to maintain homeostasis of respiratory temperature sensitivity at prevalent growth temperature.

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Section: Discussionsupporting

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Three physiological parameters capture variation in leaf respiration of Eucalyptus grandis, as elicited by short‐term changes in ambient temperature, and differing nitrogen supply

Kruse¹,

Rennenberg²,

Adams

2018

Plant Cell & Environment

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“…The temperature dependency of photosynthesis ( A ) can be described by an extended Arrhenius equation (Kruse et al ., , ). Variation in Arrhenius‐type parameters mostly depends on legacies of past environmental conditions (Kruse et al ., 2012a).…”

Section: Introductionmentioning

confidence: 99%

Optimization of photosynthesis and stomatal conductance in the date palm Phoenix dactylifera during acclimation to heat and drought

et al. 2019

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We studied acclimation of leaf gas exchange to differing seasonal climate and soil water availability in slow-growing date palm (Phoenix dactylifera) seedlings. We used an extended Arrhenius equation to describe instantaneous temperature responses of leaf net photosynthesis (A) and stomatal conductance (G), and derived physiological parameters suitable for characterization of acclimation (T opt , A opt and T equ ).Optimum temperature of A (T opt ) ranged between 20-33°C in winter and 28-45°C in summer. Growth temperature (T growth ) explained c. 50% of the variation in T opt , which additionally depended on leaf water status at the time of measurement. During water stress, lightsaturated rates of A at T opt (i.e. A opt ) were reduced to 30-80% of control levels, albeit not limited by CO 2 supply per se.Equilibrium temperature (T equ ), around which A/G and substomatal [CO 2 ] are constant, remained tightly coupled with T opt . Our results suggest that acclimatory shifts in T opt and A opt reflect a balance between maximization of photosynthesis and minimization of the risk of metabolic perturbations caused by imbalances in cellular [CO 2 ].This novel perspective on acclimation of leaf gas exchange is compatible with optimization theory, and might help to elucidate other acclimation and growth strategies in species adapted to differing climates.

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“…Neither thermal acclimation of A n ( T opt and A opt ) nor J max 25 : V cmax 25 ratio was affected by RuBisCO content. The absence of any effect of RubisCO content on traits related to thermal acclimation of A n has been reported by Weston et al (2007) and Kruse et al (2017), while other studies found a significant decrease of V cmax 25 linked to a decrease in RuBisCO and leaf nitrogen content (Scafaro et al, 2016; Crous et al, 2018). Thus, the relationship between the change in RuBisCO content in response to growth temperature and thermal acclimation of A n via the modulation of photosynthetic capacity attributes ( V cmax 25 and J max 25 ) is, most likely, depending on species and environemental parameters (e.g.…”

Section: Discussionmentioning

confidence: 80%

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

Benomar

Moutaoufik

Elferjani

et al. 2018

Preprint

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The 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.

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Characterization of photosynthetic acclimation in Phoenix dactylifera by a modified Arrhenius equation originally developed for leaf respiration

Cited by 13 publications

References 106 publications

Three physiological parameters capture variation in leaf respiration of Eucalyptus grandis, as elicited by short‐term changes in ambient temperature, and differing nitrogen supply

Three physiological parameters capture variation in leaf respiration of Eucalyptus grandis, as elicited by short‐term changes in ambient temperature, and differing nitrogen supply

Optimization of photosynthesis and stomatal conductance in the date palm Phoenix dactylifera during acclimation to heat and drought

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

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