The Effect of Elevated Temperature on Salt Tolerance Mechanism in C4 Xero-Halophyte Kochia prostrata

Рахманкулова, З. Ф.; Shuyskaya, E. V.; Prokofieva, M. Yu.; Toderich, Kristina; Yamanaka, N.; Voronin, P. Yu.

doi:10.1134/s1021443722060322

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…Moreover, the Na + content of leaves increased by only 40% under eTem + NaCl compared with the eTem treatment, and this was 5.5-fold lower than under the individual effect of salinity (Figure 1). This may be due to the high level of potassium in plant tissues, which at elevated temperatures can play a more important role in adaptation to salinity, as has been shown for the halophyte K. prostrata [54]. At the same time, eTem + NaCl did not worsen the negative effect on PSII function or Rubisco and PEPC enzyme content compared to the eTem treatment.…”

Section: Discussionmentioning

confidence: 61%

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

et al. 2023

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Chenopodium quinoa is a genetically diverse crop that can adapt to a wide range of environments, including temperatures and salinities. However, only a few studies have assessed the combined effects of two or more environmental factors on C. quinoa. Here, we investigated the effects of salinity (300 mM NaCl), elevated temperature (35 °C), and their interaction with growth, water–salt balance, the efficiency of photosystem II (PSII), the activity of cyclic electron transport (CET) around photosystem I (PSI), Rubisco and PEPC enzyme content, and the expression of photosynthetic genes. We found that elevated temperature did not decrease the biomass but caused a significant increase in the water and potassium content of C. quinoa leaves. The decrease in PSII efficiency under elevated temperature was accompanied by an increase in the expression of genes encoding the components of PSII (psbA) and linear electron transport (FDI), as well as the main photosynthetic protein Rubisco (rbcL). Moreover, the strongest effect was induced by the combined effect of elevated temperature and salinity, which induced high oxidative stress (a threefold increase in MDA), a threefold decrease in the biomass, a twofold decrease in PSII efficiency, and a two- to eightfold decrease in the expression of the photosynthetic genes psbA, FDI, and rbcL. PSI was more tolerant to all forms of stress; however, the combined effect of elevated temperature and salinity downregulated the expression of PGR5 and FNR1, which may diminish the role of PGR5/PGRL1-dependent CET in favor of the NDH-dependent CET of PSI. The obtained data on the functioning of photosystems and the expression of photosynthetic genes under combined stress (elevated temperature and salinity) can make a significant contribution to understanding the mechanisms of tolerance of C. quinoa to multiple stresses under climate change conditions.

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Section: Discussionmentioning

confidence: 61%

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

et al. 2023

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“…In contrast to the species S. sedoides , studies of the C 3 species Chenopodium quinoa showed that the combined effects of elevated temperature and salinity had a more negative effect compared with the action of each factor alone, leading to high oxidative stress and decreases in biomass, PSII efficiency, and photosynthetic gene expression [ 62 ]. At the same time, the study of the closely related C 4 -NADP species Bassia prostrata showed that elevated temperature changed the role of sodium and potassium ions, as well as proline, in the mechanisms of its salt tolerance [ 63 ].…”

Section: Discussionmentioning

confidence: 99%

Salinity Mitigates the Negative Effect of Elevated Temperatures on Photosynthesis in the C3-C4 Intermediate Species Sedobassia sedoides

Shuyskaya,

Rakhmankulova,

Prokofieva

et al. 2024

Plants

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The adaptation of plants to combined stresses requires unique responses capable of overcoming both the negative effects of each individual stress and their combination. Here, we studied the C3-C4 (C2) halophyte Sedobassia sedoides in response to elevated temperature (35 °C) and salinity (300 mM NaCl) as well as their combined effect. The responses we studied included changes in water–salt balance, light and dark photosynthetic reactions, the expression of photosynthetic genes, the activity of malate dehydrogenase complex enzymes, and the antioxidant system. Salt treatment led to altered water–salt balance, improved water use efficiency, and an increase in the abundance of key enzymes involved in intermediate C3-C4 photosynthesis (i.e., Rubisco and glycine decarboxylase). We also observed a possible increase in the activity of the C2 carbon-concentrating mechanism (CCM), which allowed plants to maintain high photosynthesis intensity and biomass accumulation. Elevated temperatures caused an imbalance in the dark and light reactions of photosynthesis, leading to stromal overreduction and the excessive generation of reactive oxygen species (ROS). In response, S. sedoides significantly activated a metabolic pathway for removing excess NADPH, the malate valve, which is catalyzed by NADP-MDH, without observable activation of the antioxidant system. The combined action of these two factors caused the activation of antioxidant defenses (i.e., increased activity of SOD and POX and upregulation of FDI), which led to a decrease in oxidative stress and helped restore the photosynthetic energy balance. Overall, improved PSII functioning and increased activity of PSI cyclic electron transport (CET) and C2 CCM led to an increase in the photosynthesis intensity of S. sedoides under the combined effect of salinity and elevated temperature relative to high temperature alone.

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“…Photosynthesis is dependent on canopy cover in some communities complicating the relationship between carbon fixation and rising CO 2 (Meng et al, 2023). Rakhmankulova et al (2023) reported on the effects of short-term elevated temperatures and CO 2 (400 or 800 ppm) on gas exchange in a C 3 (Chenopodium quinoa or quinoa) and C 4 plant (Amaranthus retroflexus or amaranth) in Russia. The plants were grown at 25° or 35°C (for four days) at low or high CO 2 (400 or 800 ppm).…”

Section: Effect Of Climate Change On Photosynthesis Leaf Area Expansi...mentioning

confidence: 99%

Climate change increases net CO ₂ assimilation in the leaves of strawberry, but not yield

Menzel

2023

The Journal of Horticultural Science and Biotechnology

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Fruit growth in strawberry is dependent on photosynthesis in the leaves. The main scenarios for climate change include an increase in the concentration of CO 2 in the atmosphere and an increase in temperature. This review examined photosynthesis in strawberry. The mean photosynthetic photon flux (PPF) for the saturation of CO 2 assimilation was 1,031 ± 447 µmol per m 2 per s, the median was 1,000 µmol per m 2 per s, and the range was from 467 to 2,200 µmol per m 2 per s (N = 59). The mean concentration of CO 2 for the saturation of assimilation was 869 ± 306 ppm, the median was 900 ppm, and the range was from 410 to 1,750 ppm (N = 32). The optimum temperature range for CO 2 assimilation was 20° to 30°C, with lower photosynthesis at lower or higher temperatures. The optimum temperatures for photosynthesis are higher than those for flowering and fruit growth. The impact of climate change on production varies across growing areas. In warm locations, higher temperatures increase photosynthesis, but not yield. In cool locations, higher temperatures increase plant growth and the length of the production season, but this comes at the expense of flower initiation.

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The Effect of Elevated Temperature on Salt Tolerance Mechanism in C4 Xero-Halophyte Kochia prostrata

Cited by 3 publications

References 38 publications

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

Salinity Mitigates the Negative Effect of Elevated Temperatures on Photosynthesis in the C3-C4 Intermediate Species Sedobassia sedoides

Climate change increases net CO ₂ assimilation in the leaves of strawberry, but not yield

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The Effect of Elevated Temperature on Salt Tolerance Mechanism in C4 Xero-Halophyte Kochia prostrata

Cited by 3 publications

References 38 publications

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd

Salinity Mitigates the Negative Effect of Elevated Temperatures on Photosynthesis in the C3-C4 Intermediate Species Sedobassia sedoides

Climate change increases net CO 2 assimilation in the leaves of strawberry, but not yield

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Climate change increases net CO ₂ assimilation in the leaves of strawberry, but not yield