The relation between plant growth and respiration: A thermodynamic model

Hansen, Lee D.; Hopkin, Mark S.; Rank, David R.; Anekonda, Thimmappa S.; Breidenbach, R. W.; Criddle, Richard S.

doi:10.1007/bf00201037

Cited by 77 publications

(63 citation statements)

References 28 publications

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“…The temperature dependencies of R CO 2 and q are different (Hansen et al 1994c). The difference between 455R CO 2 and q therefore changes with temperature and this difference can be used to predict growth rate changes with temperature.…”

Section: Theorymentioning

confidence: 99%

“…With differences in temperature dependence, values of q=R CO 2 provide easily measured, relative values of substrate carbon conversion efficiency as indicated by Eq. 3 (Hansen et al 1994c…”

Section: Theorymentioning

confidence: 99%

“…Furthermore, we have developed mechanistic equations relating these metabolic rate measurements to plant growth rate and carbon conversion efficiency (Hansen et al 1994c). The purpose of this paper is to demonstrate how these developments provide new perspectives on the physiology of plant responses to temperature.…”

Section: Introductionmentioning

confidence: 99%

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A respiration based description of plant growth rate responses to temperature

Criddle

Smith

Hansen

1997

Planta

148

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The temperature dependence of metabolic rates determines how plant growth rates vary with temperature. This paper shows that equations on physiological relations between respiration rates (i.e. rates of heat loss and CO 2 evolution) and growth rates can be used to describe temperature effects on plant growth rate. Incorporating measured values of plant respiratory heat and CO 2 rates at a few temperatures into the equations allows description of growth rates as a function of temperature and provides a physiological basis for understanding the effects of temperature on growth rate. The paper presents data on cabbage (Brassica oleracea L. Capitata) and tomato (Lycopersicon esculentum Miller cv. Ace) as model cool-climate and warm-climate cultivars to illustrate application of the methods in determining optimal growth climates for different cultivars, accessions, and ecotypes. The respiration-based calculations of growth rate vs. temperature yield curves for both species that are consistent with known temperature-growth requirements. We conclude that plant responses to temperature can be accurately predicted in detail from respiration rate measurements and the growth-respiration model. These studies demonstrate that the temperature dependence of growth rates is a function of the temperature dependencies of both metabolic rates and metabolic efficiency, which change continuously with temperature. The ultimate cause of high-and low-temperature growth limits is commonly not membrane phase transitions or enzyme denaturation as has been supposed, but is loss of substrate carbon conversion efficiency. The results show that ''plant temperature stress'' has been misunderstood and must be redefined because there is no ''nonstressfull temperature''.Abbreviations and symbols: R CO2 = rate of CO 2 production; R sq = specific mass-growth rate; q = metallic heat rate (rate of energy loss; p = mean chemical oxidation state of the substrate carbon; ∆H B = enthalpy change for the formation of biomass from photosynthat and minerals; = substrate carbon conversion efficiency Correspondence to: B.N. Smith;

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Section: Theorymentioning

confidence: 99%

“…With differences in temperature dependence, values of q=R CO 2 provide easily measured, relative values of substrate carbon conversion efficiency as indicated by Eq. 3 (Hansen et al 1994c…”

Section: Theorymentioning

confidence: 99%

See 1 more Smart Citation

A respiration based description of plant growth rate responses to temperature

Criddle

Smith

Hansen

1997

Planta

148

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“…Thus, there are only two ways to change the heat production rate: increasing the reaction rate or switching to a more exothermic enthalpy change, AH. Expressions relating q/R02 and q/Rco2 to AH for respiratory reactions are as follows (Hansen et al, 1994):…”

Section: Relation Between Metabolic Pathways Metabolic Rate and Heamentioning

confidence: 99%

Heat Generation and Dissipation in Plants: Can the Alternative Oxidative Phosphorylation Pathway Serve a Thermoregulatory Role in Plant Tissues Other Than Specialized Organs?

Breidenbach¹,

Saxton²,

Hansen³

et al. 1997

Plant Physiology

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“…Two such frameworks are the growth and maintenance paradigm (Amthor 2000; Cannell and Thornley 2000;Thornley and Cannell 2000) and the enthalpy balance model of respiration and growth (Hansen et al 1994;Criddle and Hansen 1999). According to the growth-maintenance paradigm, the observed positive correlations between growth and respiration rates can be explained by a respiration component, m, responsible for maintaining cellular function in existing biomass, and a second component, g, responsible for energizing growth.…”

Section: Introductionmentioning

confidence: 97%

Water stress impacts on respiratory rate, efficiency and substrates, in growing and mature foliage of Eucalyptus spp

Callister

Adams

2006

Planta

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In previous studies, water stress has induced variable and sometimes contradictory changes in respiration. We used isothermal calorimetry to measure the response of foliar respiration to water deficit in nine eucalypt genotypes. Specific growth rates (R(SG)) of shoots and leaves of variable age were measured independently, and the data were applied to both the growth-maintenance and enthalpy balance models. We calculated the oxidation state of respiratory substrate and the enthalpy change for the conversion of substrate carbon to biomass (DeltaH(B)). Moderate water stress reduced the R(SG) of shoots by 38% (P<0.01) and carbon conversion efficiency by 15% (P<0.05). The relationship between carbon conversion efficiency and R(SG) was not affected by water deficit for shoots, but was significantly altered for leaves. Water deficit increased maintenance respiration by about 23% (P<0.001). The growth coefficient of respiration was not significantly altered. However, changes in oxidation states of substrate and biomass suggest that the energy requirements of biosynthesis were increased under water stress. Our results confirm that carbohydrates are the major respiratory substrates in growing tissues, though mature leaves utilized a substantial component of more reduced substrate. Mature leaves had variable oxidation states for respiration substrate, which indicates a variable relationship between CO(2) evolution and ATP production. Measured DeltaH(B) in shoots and leaves were too small for reliable estimation of R(SG) by the enthalpy balance model. We also found significant effects of water stress on the oxidation state of substrate and DeltaH(B).

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The relation between plant growth and respiration: A thermodynamic model

Cited by 77 publications

References 28 publications

A respiration based description of plant growth rate responses to temperature

A respiration based description of plant growth rate responses to temperature

Heat Generation and Dissipation in Plants: Can the Alternative Oxidative Phosphorylation Pathway Serve a Thermoregulatory Role in Plant Tissues Other Than Specialized Organs?

Water stress impacts on respiratory rate, efficiency and substrates, in growing and mature foliage of Eucalyptus spp

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