Potential improvement of photosynthetic CO2 assimilation in crops by exploiting the natural variation in the temperature response of Rubisco catalytic traits

Galmés, Jeroni; Capó‐Bauçà, Sebastià; Niinemets, Ülo; Iñíguez, Concepción

doi:10.1016/j.pbi.2019.05.002

Cited by 38 publications

(31 citation statements)

References 37 publications

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“…Furthermore, higher temperature leads not only to increased k cat c up to its optimum temperature (usually 50–60°C; Galmés et al , ), but also to increased K c (i.e. lower affinity for CO 2 ) and reduced S c/o values as universal trends in RuBisCO catalytic behaviour (Jordan and Ogren, ; Uemura et al , ; Bernacchi et al , ; Galmés et al , , ). k cat c seems to be the most responsive parameter to temperature changes (Jordan and Ogren, ; Perdomo et al , ; Galmés et al , ), so the reduction in k cat c and, consequently, carboxylation efficiency, might be an important issue in extremely cold environments.…”

Section: Temperature Dependence Of Rubisco Kinetic Traits: Adaptationmentioning

confidence: 99%

“…Change in RuBisCO CO 2 assimilation capacity between 10 and 30°C showing CCMs enhancement in the cyanobacterium Synechococcus sp. (orange lines), the diatom Thalassiosira weissflogii (blue lines) and the C 4 plant Zea mays (green lines), using the RuBisCO kinetic traits compiled (Data S1) and the thermal dependencies reported by Galmés et al (, ). Numbers on or adjacent to each curve indicate the temperature used for the calculation, in °C.…”

Section: Temperature Dependence Of Rubisco Kinetic Traits: Adaptationmentioning

confidence: 99%

“…Regarding terrestrial spermatophytes, a recent compilation of more than 100 species revealed that C 3 plants possess a significantly higher Δ H a for k cat c than C 4 plants, although no significant differences regarding the thermal dependencies of any RuBisCO catalytic trait was found between C 3 plants from cold and warm environments (Galmés et al , ). However, some differences were found between cool and warm C 3 plants in the average RuBisCO kinetic trait values at discrete temperatures (e.g.…”

Section: Temperature Dependence Of Rubisco Kinetic Traits: Adaptationmentioning

confidence: 99%

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Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO₂ concentrating mechanisms

et al. 2020

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Summary RuBisCO‐catalyzed CO2 fixation is the main source of organic carbon in the biosphere. This enzyme is present in all domains of life in different forms (III, II, and I) and its origin goes back to 3500 Mya, when the atmosphere was anoxygenic. However, the RuBisCO active site also catalyzes oxygenation of ribulose 1,5‐bisphosphate, therefore, the development of oxygenic photosynthesis and the subsequent oxygen‐rich atmosphere promoted the appearance of CO2 concentrating mechanisms (CCMs) and/or the evolution of a more CO2‐specific RuBisCO enzyme. The wide variability in RuBisCO kinetic traits of extant organisms reveals a history of adaptation to the prevailing CO2/O2 concentrations and the thermal environment throughout evolution. Notable differences in the kinetic parameters are found among the different forms of RuBisCO, but the differences are also associated with the presence and type of CCMs within each form, indicative of co‐evolution of RuBisCO and CCMs. Trade‐offs between RuBisCO kinetic traits vary among the RuBisCO forms and also among phylogenetic groups within the same form. These results suggest that different biochemical and structural constraints have operated on each type of RuBisCO during evolution, probably reflecting different environmental selective pressures. In a similar way, variations in carbon isotopic fractionation of the enzyme point to significant differences in its relationship to the CO2 specificity among different RuBisCO forms. A deeper knowledge of the natural variability of RuBisCO catalytic traits and the chemical mechanism of RuBisCO carboxylation and oxygenation reactions raises the possibility of finding unrevealed landscapes in RuBisCO evolution.

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Section: Temperature Dependence Of Rubisco Kinetic Traits: Adaptationmentioning

confidence: 99%

Section: Temperature Dependence Of Rubisco Kinetic Traits: Adaptationmentioning

confidence: 99%

Section: Temperature Dependence Of Rubisco Kinetic Traits: Adaptationmentioning

confidence: 99%

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Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO₂ concentrating mechanisms

et al. 2020

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“…For instance, low temperatures produce an uncoupling between temperature‐independent photochemical reactions and temperature‐dependent biochemical reactions, as explained in Section Photobiochemistry. RuBisCO catalytic traits are distinctly affected by temperature, and carboxylation turnover rate ( k cat c ) is the most responsive trait to temperature changes (Galmés et al , ). In vitro , k cat c increases with temperature up to a thermal optimum of c. 50–55°C (Galmés et al , ), beyond which the enzyme undergoes denaturation, while the affinity and specificity of RuBisCO for CO 2 decreases with temperature (Jordan and Ogren, ).…”

Section: Photosynthesis In Extreme Environments: Taking Advantage Of mentioning

confidence: 99%

“…In vitro , k cat c increases with temperature up to a thermal optimum of c. 50–55°C (Galmés et al , ), beyond which the enzyme undergoes denaturation, while the affinity and specificity of RuBisCO for CO 2 decreases with temperature (Jordan and Ogren, ). The strong decrease in k cat c at low temperatures is only partially compensated by an increase in the RuBisCO specificity factor ( S c/o ) and affinity for CO 2 , that is, a lower semisaturation constant for CO 2 ( K c ) (Bernacchi et al , ; Galmés et al , , ). Although the higher solubility of CO 2 at low temperatures can also partially attenuate the decrease in RuBisCO activity, CO 2 diffusion is also significantly reduced at low temperatures (see Section Diffusive limitations), so the drop in RuBisCO carboxylation rate may be an important issue in extremely cold environments.…”

Section: Photosynthesis In Extreme Environments: Taking Advantage Of mentioning

confidence: 99%

How do vascular plants perform photosynthesis in extreme environments? An integrative ecophysiological and biochemical story

et al. 2020

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Summary In this work, we review the physiological and molecular mechanisms that allow vascular plants to perform photosynthesis in extreme environments, such as deserts, polar and alpine ecosystems. Specifically, we discuss the morpho/anatomical, photochemical and metabolic adaptive processes that enable a positive carbon balance in photosynthetic tissues under extreme temperatures and/or severe water‐limiting conditions in C3 species. Nevertheless, only a few studies have described the in situ functioning of photoprotection in plants from extreme environments, given the intrinsic difficulties of fieldwork in remote places. However, they cover a substantial geographical and functional range, which allowed us to describe some general trends. In general, photoprotection relies on the same mechanisms as those operating in the remaining plant species, ranging from enhanced morphological photoprotection to increased scavenging of oxidative products such as reactive oxygen species. Much less information is available about the main physiological and biochemical drivers of photosynthesis: stomatal conductance (gs), mesophyll conductance (gm) and carbon fixation, mostly driven by RuBisCO carboxylation. Extreme environments shape adaptations in structures, such as cell wall and membrane composition, the concentration and activation state of Calvin–Benson cycle enzymes, and RuBisCO evolution, optimizing kinetic traits to ensure functionality. Altogether, these species display a combination of rearrangements, from the whole‐plant level to the molecular scale, to sustain a positive carbon balance in some of the most hostile environments on Earth.

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Sorghum in dryland: morphological, physiological, and molecular responses of sorghum under drought stress

Abreha

Enyew

Carlsson

et al. 2021

Planta

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Main conclusion Droughts negatively affect sorghum’s productivity and nutritional quality. Across its diversity centers, however, there exist resilient genotypes that function differently under drought stress at various levels, including molecular and physiological. Abstract Sorghum is an economically important and a staple food crop for over half a billion people in developing countries, mostly in arid and semi-arid regions where drought stress is a major limiting factor. Although sorghum is generally considered tolerant, drought stress still significantly hampers its productivity and nutritional quality across its major cultivation areas. Hence, understanding both the effects of the stress and plant response is indispensable for improving drought tolerance of the crop. This review aimed at enhancing our understanding and provide more insights on drought tolerance in sorghum as a contribution to the development of climate resilient sorghum cultivars. We summarized findings on the effects of drought on the growth and development of sorghum including osmotic potential that impedes germination process and embryonic structures, photosynthetic rates, and imbalance in source-sink relations that in turn affect seed filling often manifested in the form of substantial reduction in grain yield and quality. Mechanisms of sorghum response to drought-stress involving morphological, physiological, and molecular alterations are presented. We highlighted the current understanding about the genetic basis of drought tolerance in sorghum, which is important for maximizing utilization of its germplasm for development of improved cultivars. Furthermore, we discussed interactions of drought with other abiotic stresses and biotic factors, which may increase the vulnerability of the crop or enhance its tolerance to drought stress. Based on the research reviewed in this article, it appears possible to develop locally adapted cultivars of sorghum that are drought tolerant and nutrient rich using modern plant breeding techniques.

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Potential improvement of photosynthetic CO2 assimilation in crops by exploiting the natural variation in the temperature response of Rubisco catalytic traits

Cited by 38 publications

References 37 publications

Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO₂ concentrating mechanisms

Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO₂ concentrating mechanisms

How do vascular plants perform photosynthesis in extreme environments? An integrative ecophysiological and biochemical story

Sorghum in dryland: morphological, physiological, and molecular responses of sorghum under drought stress

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Potential improvement of photosynthetic CO2 assimilation in crops by exploiting the natural variation in the temperature response of Rubisco catalytic traits

Cited by 38 publications

References 37 publications

Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO2 concentrating mechanisms

Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO2 concentrating mechanisms

How do vascular plants perform photosynthesis in extreme environments? An integrative ecophysiological and biochemical story

Sorghum in dryland: morphological, physiological, and molecular responses of sorghum under drought stress

Contact Info

Product

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Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO₂ concentrating mechanisms

Evolutionary trends in RuBisCO kinetics and their co‐evolution with CO₂ concentrating mechanisms