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McCarlie, V. Wallace; Hansen, Lee D.; Smith, Bruce N.; Monsen, Stephen B.; Ellingson, D. J.

doi:10.1023/a:1022917013029

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…Criddle et al [44] were the first to demonstrate the accuracy of calorespirometric-based predictions by comparing predicted growth rates with measured growth rate data on tomato and cabbage leaves at different temperatures. Since then, many other authors have shown that, in green tissues, biomass growth rate was correlated with the R biomass calculated from R q and R CO2 [50,101,102]. Therefore, a decrease in R biomass detected in young leaves of plants exposed to high temperatures is indicative of an overall growth rate decrease.…”

Section: Discussionmentioning

confidence: 95%

“…Photosynthesis is a rate-limiting process in plant growth if carbon is the limiting resource, but plants can grow no faster than photosynthates can be processed by respiration. In contrast to measurements of photosynthetic properties, calorespirometry can directly determine specific growth rates [44], whether the limitation is due to photosynthate, water, nutrient availability, or is inherent in the genetic background [49,50]. Any environmental condition that affects growth rates (e.g., temperature stress) can be quantified by calorespirometric measurements of growth rate as a function of the stress.…”

Section: Introductionmentioning

confidence: 99%

“…Catabolism of photosynthates produces CO 2 , ATP, and NADH. Anabolic reactions are coupled to catabolism and use ATP and NADH for the synthesis of new tissue and for maintenance [50]. Anabolism also produces CO 2 from reduction in photosynthate, but because anabolism produces very little or no heat [51], the rate of CO 2 production from catabolism can be distinguished from the CO 2 produced by anabolism through calorespirometric measurements.…”

Section: Introductionmentioning

confidence: 99%

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Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy

Nogales

Ribeiro

Nogales-Bueno

et al. 2020

Plants

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Heat stress negatively affects several physiological and biochemical processes in grapevine plants. In this work, two new methods, calorespirometry, which has been used to determine temperature adaptation in plants, and near-infrared (NIR) spectroscopy, which has been used to determine several grapevine-related traits and to discriminate among varieties, were tested to evaluate grapevine response to high temperatures. ‘Touriga Nacional’ variety grapevines, inoculated or not with Rhizoglomus irregulare or Funneliformis mosseae, were used in this study. Calorespirometric parameters and NIR spectra, as well as other parameters commonly used to assess heat injury in plants, were measured before and after high temperature exposure. Growth rate and substrate carbon conversion efficiency, calculated from calorespirometric measurements, and stomatal conductance, were the most sensitive parameters for discriminating among high temperature responses of control and inoculated grapevines. The results revealed that, although this vine variety can adapt its physiology to temperatures up to 40 °C, inoculation with R. irregulare could additionally help to sustain its growth, especially after heat shocks. Therefore, the combination of calorespirometry together with gas exchange measurements is a promising strategy for screening grapevine heat tolerance under controlled conditions and has high potential to be implemented in initial phases of plant breeding programs.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy

Nogales

Ribeiro

Nogales-Bueno

et al. 2020

Plants

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“…R CO2 typically goes through a maximum near the midpoint temperature in the temperature range allowing growth. For plants that are well adapted to an environment, the curve of growth rate vs. temperature duplicates the shape of a curve of the reciprocal of temperature frequency (usually plotted as hours at a given temperature) vs. temperature for the environment [24][25][26][27]. In climates with a small diurnal variation and in highly unstable climates, the growth rate curve typically has the shape of a skewed parabola with the maximum at the mean kinetic temperature of the environment and crosses zero at the maximum and minimum temperatures of the growth season.…”

Section: Calorespirometrymentioning

confidence: 99%

“…In these climates, plants spend roughly half their time growing at temperatures where their growth rate increases with increasing temperature and the other half at temperatures where growth rate declines with increasing temperature. In stable environments with a large diurnal temperature difference such as is found in many semi-desert and desert climates, the growth curve is bimodal with maxima at the kinetic mean temperatures of the day and night [25][26][27]. Plants in these climates spend almost no time at the mean temperature.…”

Section: Calorespirometrymentioning

confidence: 99%

Biological calorimetry and the thermodynamics of the origination and evolution of life

Hansen

Criddle

Battley

2009

Pure and Applied Chemistry

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Calorimetric measurements on biological systems from small molecules to whole organisms lead to a new conception of the nature of live matter that has profound consequences for our understanding of biology. The data show that the differences in Gibbs energy (ΔG) and enthalpy (ΔH) are near zero or negative and the difference in entropy (ΔS) is near zero between a random mixture of molecules and live matter of the same composition. A constant input of energy is required to maintain ion gradients, ATP production, and the other functions of living matter, but because cells are organized in a spontaneous process, no energy input is required to maintain the structure or organization of cells. Thus, the origin of life and evolution of complex life forms occurs by thermodynamically spontaneous processes, carbon-based life should be common throughout the universe, and because there is no energy cost, evolution can occur relatively rapidly.However, observations on biological systems challenge Schrödinger's model. Despite the assumed formidable energy and entropy costs, life did originate at least once, and possibly more than once [2]. Second, energy from catabolism is not transferred into new tissue during growth; catabolic reactions are used in driving (i.e., increasing the rates of) anabolic reactions but do not contribute to an overall higher-energy state in the anabolic products [2,3]. Third, live matter exists in a state of suspended animation or in a state with an extremely low rate of respiration for extended lengths of time without energy input (e.g., see [4][5][6][7]), for example, microorganisms, resurrection plants, seeds, spores, estivating animals, bdelloids, and inhabitants of desert ephemeral pools. Fourth, experimental data show that life does not always feed on negentropy [8]. And, evolutionary changes occur with frequencies that are difficult to envision if change to more complex life forms requires formation of ever-lower-entropy, higher-energy, metastable states.Explication of the reaction defining the thermodynamic system in which live matter is formed from nonliving matter resolves the apparent inconsistencies between Schrödinger's model for live matter and these observations. Schrödinger [1] did not explicitly define the reaction used to conclude that the entropy of live matter is lower than that of the "foodstuffs" from which it was formed. The product is clearly living cells, tissues, or an organism, but the state of the live matter and what is meant by "foodstuffs", i.e., the reactants, are not clear. Is the live matter an animal in motion or is it an embryo in a seed in a state of suspended animation? In autotrophs, "foodstuffs" could mean CO 2 , H 2 O, and N 2 , or it could mean the substrates for respiration such as carbohydrates and amino acids. Whether living tissues are in a high-or a low-energy state is relative to the reactants and thus depends on the system considered.Comparison of a random mixture of molecules in aqueous solution and live matter of the same composition is the appropriate...

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Calorespirometry as a tool for studying temperature response in carrot (Daucus carota L.)

Nogales

Muñoz-Sanhueza

Hansen

et al. 2013

Engineering in Life Sciences

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Calorespirometric measurements of metabolic heat rates and CO2 emission rates of respiring tissues as functions of temperature enable rapid determination of the temperatures that plants are adapted to without growing them in different environmental temperatures. However, the correct choice of target material for measurements that enable prediction of growth temperature responses is crucial, and needs to be identified in a species‐ and trait‐specific manner. In this study, different carrot materials were tested: a primary culture system proposed as an in vitro test system for carrot yield potential, taproots of young plants, and the root meristem of actively growing plants during secondary root growth. The central root meristem is the most suitable for studying temperature response by calorespirometry for genotype comparison. Calorespirometric methods for predicting genotype‐specific temperature responses of crop plant cultivars can be used to predict productivity in environments with differing temperature conditions.

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Untitled

Cited by 9 publications

References 16 publications

Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy

Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatures Measured by Calorespirometry and Near-Infrared Spectroscopy

Biological calorimetry and the thermodynamics of the origination and evolution of life

Calorespirometry as a tool for studying temperature response in carrot (Daucus carota L.)

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