Elevated [CO2] benefits coffee growth and photosynthetic performance regardless of light availability

Marçal, Dinorah M.S.; Ávila, Rodrigo T.; Quiroga-Rojas, Luisa F.; Souza, Raylla P.B. de; Júnior, Carlos César Gomes; Ponte, Lucas Roani; Barbosa, Marcela Lúcia; Oliveira, Leonardo Araújo; Martins, Samuel C. V.; Ramalho, José C.; DaMatta, Fábio M.

doi:10.1016/j.plaphy.2020.11.042

Cited by 22 publications

(19 citation statements)

References 71 publications

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“…Diminished glycine/serine (Gly/Ser) in Arabidopsis CEF mutants grown under high light conditions indicates impaired photorespiration, suggesting a strong link between CEF and photorespiration (Florez-Sarasa et al, 2016). Similarly, based on the correlation between CEF and electron flow devoted to RuBP oxygenation (J O ), the electron flow that was largely devoted to RuBP oxygenation would contribute to the operation of the CEF (Figure 5H;von Caemmerer, 2020;Marçal et al, 2021). Thus, for plants growing in the shade environment, the photorespiration pathway regulates the photosynthetic electron flow under transient high light.…”

Section: Photorespiration Plays a Role In Regulating The Cyclic Electron Flow In Response To Transient High Lightmentioning

confidence: 99%

The Responses of Light Reaction of Photosynthesis to Dynamic Sunflecks in a Typically Shade-Tolerant Species Panax notoginseng

Zhang

Shuang

et al. 2021

Front. Plant Sci.

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Light is highly heterogeneous in natural conditions, and plants need to evolve a series of strategies to acclimate the dynamic light since it is immobile. The present study aimed to elucidate the response of light reaction of photosynthesis to dynamic sunflecks in a shade-tolerant species Panax notoginseng and to examine the regulatory mechanisms involved in an adaptation to the simulated sunflecks. When P. notoginseng was exposed to the simulated sunflecks, non-photochemical quenching (NPQ) increased rapidly to the maximum value. Moreover, in response to the simulated sunflecks, there was a rapid increase in light-dependent heat dissipation quantum efficiency of photosystem II (PSII) (ΦNPQ), while the maximum quantum yield of PSII under light (Fv′/Fm′) declined. The relatively high fluorescence and constitutive heat dissipation quantum efficiency of PSII (Φf,d) in the plants exposed to transient high light (400, 800, and 1,600 μmol m–2 s–1) was accompanied by the low effective photochemical quantum yield of PSII (ΦPSII) after the dark recovery for 15 min, whereas the plants exposed to transient low light (50 μmol m–2 s–1) has been shown to lead to significant elevation in ΦPSII after darkness recovery. Furthermore, PSII fluorescence and constitutive heat dissipation electron transfer rate (Jf,d) was increased with the intensity of the simulated sunflecks, the residual absorbed energy used for the non-net carboxylative processes (JNC) was decreased when the response of electron transfer rate of NPQ pathway of PSII (JNPQ) to transient low light is restricted. In addition, the acceptor-side limitation of PSI [Y(NA)] was increased, while the donor-side limitation of photosystems I (PSI) [Y(ND)] was decreased at transient high light conditions accompanied with active cyclic electron flow (CEF). Meanwhile, when the leaves were exposed to transient high light, the xanthophyll cycle (V cycle) was activated and subsequently, the JNPQ began to increase. The de-epoxidation state [(Z + A)/(V + A + Z)] was strongly correlated with NPQ in response to the sunflecks. In the present study, a rapid engagement of lutein epoxide (Lx) after the low intensity of sunfleck together with the lower NPQ contributed to an elevation in the maximum photochemical quantum efficiency of PSII under the light. The analysis based on the correlation between the CEF and electron flow devoted to Ribulose-1, 5-bisphosphate (RuBP) oxygenation (JO) indicated that at a high light intensity of sunflecks, the electron flow largely devoted to RuBP oxygenation would contribute to the operation of the CEF. Overall, photorespiration plays an important role in regulating the CEF of the shade-tolerant species, such as P. notoginseng in response to transient high light, whereas active Lx cycle together with the decelerated NPQ may be an effective mechanism of elevating the maximum photochemical quantum efficiency of PSII under light exposure to transient low light.

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Section: Photorespiration Plays a Role In Regulating The Cyclic Electron Flow In Response To Transient High Lightmentioning

confidence: 99%

The Responses of Light Reaction of Photosynthesis to Dynamic Sunflecks in a Typically Shade-Tolerant Species Panax notoginseng

Zhang

Shuang

et al. 2021

Front. Plant Sci.

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“…The increase in the air [CO 2 ] has a global impact on plant metabolism, with reports of increases in net photosynthesis above 50%, namely in woody plants (Ramalho et al, 2003;Kirschbaum, 2011;DaMatta et al, 2019). Still, unfavorable climate shifts might compromise the positive impact of elevated [CO 2 ] (eCO 2 ) in photosynthesis, growth, and biomass accumulation, depending on the species (Abo Gamar et al, 2019;Birami et al, 2020;Tausz-Posch et al, 2020;Marçal et al, 2021). In this context, advances in next-generation proteomics offer an accurate molecular approach to identify proteins and pathways associated with physiological responses to stressful conditions (Gouveia et al, 2020).…”

Section: •-mentioning

confidence: 99%

High-resolution shotgun proteomics reveals that increased air [CO2] amplifies the acclimation response of Coffea species to drought regarding antioxidative, energy, sugar, and lipid dynamics

Marques

Rodrigues²,

Gouveia³

et al. 2022

Journal of Plant Physiology

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“…Previous research has reported that elevated CO 2 significantly increases PSII photochemical activity in cereal crops ( Wang et al, 2015 ). Besides that, eCO 2 led to decreases in both photorespiration rates and oxidative pressure was reported frequently ( Leakey et al, 2009 ; Marçal et al, 2021 ). In the present study, the PSII photochemical activities of the two varieties in response to elevated CO 2 were different ( Figure 4C ).…”

Section: Discussionmentioning

confidence: 72%

Does a Large Ear Type Wheat Variety Benefit More From Elevated CO2 Than That From Small Multiple Ear-Type in the Quantum Efficiency of PSII Photochemistry?

et al. 2021

Front. Plant Sci.

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Recently, several reports have suggested that the growth and grain yield of wheat are significantly influenced by high atmospheric carbon dioxide concentration (CO2) because of it photosynthesis enhancing effects. Moreover, it has been proposed that plants with large carbon sink size will benefit more from CO2 enrichment than those with small carbon sink size. However, this hypothesis is yet to be test in winter wheat plant. Therefore, the aim of this study was to examine the effect of elevated CO2 (eCO2) conditions on the quantum efficiency of photosystem II (PSII) photochemistry in large ear-type (cv. Shanhan 8675; greater ear C sink strength) and small multiple ear-type (cv. Early premium; greater vegetative C source strength) winter wheat varieties. The experiment was conducted in a free air CO2 enrichment (FACE) facility, and three de-excitation pathways of the primary reaction of PSII of flag leaf at the anthesis stage were evaluated under two CO2 concentrations (ambient [CO2], ∼415 μmol⋅mol–1, elevated [CO2], ∼550 μmol⋅mol–1) using a non-destructive technique of modulated chlorophyll fluorescence. Additionally, the grain yield of the two varieties was determined at maturity. Although elevated CO2 increased the quantum efficiency of PSII photochemistry (ΦPSII) of Shanhan 8675 (SH8675) flag leaves at the anthesis stage, the grain number per ear and 1,000-kernel weight were not significantly affected. In contrast, the ΦPSII of early premium (ZYM) flag leaves was significantly lower than that of SH8675 flag leaves at the anthesis stage, which was caused by an increase in the regulatory non-photochemical energy dissipation quantum (ΦNPQ) of PSII, suggesting that light energy absorbed by PSII in ZYM flag leaf was largely dissipated as thermal energy. The findings of our study showed that although SH8675 flag leaves exhibited higher C sink strength and quantum efficiency of PSII photochemistry at the anthesis stage, these factors alone do not ensure improved grain yield under eCO2 conditions.

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Elevated [CO2] benefits coffee growth and photosynthetic performance regardless of light availability

Cited by 22 publications

References 71 publications

The Responses of Light Reaction of Photosynthesis to Dynamic Sunflecks in a Typically Shade-Tolerant Species Panax notoginseng

The Responses of Light Reaction of Photosynthesis to Dynamic Sunflecks in a Typically Shade-Tolerant Species Panax notoginseng

High-resolution shotgun proteomics reveals that increased air [CO2] amplifies the acclimation response of Coffea species to drought regarding antioxidative, energy, sugar, and lipid dynamics

Does a Large Ear Type Wheat Variety Benefit More From Elevated CO2 Than That From Small Multiple Ear-Type in the Quantum Efficiency of PSII Photochemistry?

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