Improvement of tomato salt tolerance by the regulation of photosynthetic performance and antioxidant enzyme capacity under a low red to far-red light ratio

Wang, Yunlong; Bian, Zhonghua; Pan, Tonghua; Cao, Kai; Zou, Zhirong

doi:10.1016/j.plaphy.2021.09.008

Cited by 18 publications

(18 citation statements)

References 48 publications

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“…Elevated CO 2 confers tomato tolerance to progressively higher soil salinity and secondary soil salinization by improving antioxidant capacity, ion homeostasis, and PA metabolism, decreasing ABA and ET levels, and suppressing transpiration ( Yi et al, 2015 ; Brito et al, 2020 ; Zhang et al, 2020c ). Furthermore, low red light (R) to far-red light (FR) ratio (R:FR) enhances salinity tolerance in tomato by regulating photosynthesis and ROS scavenging systems ( Wang Y. et al, 2021 ).…”

Section: Approaches For Improving Salt Tolerance Of Tomatomentioning

confidence: 99%

Tomato salt tolerance mechanisms and their potential applications for fighting salinity: A review

Guo

Wang²,

Guo³

et al. 2022

Front. Plant Sci.

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One of the most significant environmental factors affecting plant growth, development and productivity is salt stress. The damage caused by salt to plants mainly includes ionic, osmotic and secondary stresses, while the plants adapt to salt stress through multiple biochemical and molecular pathways. Tomato (Solanum lycopersicum L.) is one of the most widely cultivated vegetable crops and a model dicot plant. It is moderately sensitive to salinity throughout the period of growth and development. Biotechnological efforts to improve tomato salt tolerance hinge on a synthesized understanding of the mechanisms underlying salinity tolerance. This review provides a comprehensive review of major advances on the mechanisms controlling salt tolerance of tomato in terms of sensing and signaling, adaptive responses, and epigenetic regulation. Additionally, we discussed the potential application of these mechanisms in improving salt tolerance of tomato, including genetic engineering, marker-assisted selection, and eco-sustainable approaches.

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Section: Approaches For Improving Salt Tolerance Of Tomatomentioning

confidence: 99%

Tomato salt tolerance mechanisms and their potential applications for fighting salinity: A review

Guo

Wang²,

Guo³

et al. 2022

Front. Plant Sci.

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“…Light spectrum-dependent alterations in ROS content under changing environmental conditions result in an appropriate adjustment of the antioxidant levels, which improves stress tolerance ( Figure 2 ). In this respect, the low R:FR ratio reduced the salinity-caused damage by the induction of SOD, POD, CAT, and APX at gene expression and enzyme activity levels in tomatoes [ 89 , 90 ]. The spectral control of the antioxidant-dependent adaptive responses was also demonstrated in wheat [ 91 ].…”

Section: The Effect Of Light Intensity and Spectrum On Ros And Antiox...mentioning

confidence: 99%

Light Intensity- and Spectrum-Dependent Redox Regulation of Plant Metabolism

et al. 2022

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Both light intensity and spectrum (280–800 nm) affect photosynthesis and, consequently, the formation of reactive oxygen species (ROS) during photosynthetic electron transport. ROS, together with antioxidants, determine the redox environment in tissues and cells, which in turn has a major role in the adjustment of metabolism to changes in environmental conditions. This process is very important since there are great spatial (latitude, altitude) and temporal (daily, seasonal) changes in light conditions which are accompanied by fluctuations in temperature, water supply, and biotic stresses. The blue and red spectral regimens are decisive in the regulation of metabolism because of the absorption maximums of chlorophylls and the sensitivity of photoreceptors. Based on recent publications, photoreceptor-controlled transcription factors such as ELONGATED HYPOCOTYL5 (HY5) and changes in the cellular redox environment may have a major role in the coordinated fine-tuning of metabolic processes during changes in light conditions. This review gives an overview of the current knowledge of the light-associated redox control of basic metabolic pathways (carbon, nitrogen, amino acid, sulphur, lipid, and nucleic acid metabolism), secondary metabolism (terpenoids, flavonoids, and alkaloids), and related molecular mechanisms. Light condition-related reprogramming of metabolism is the basis for proper growth and development of plants; therefore, its better understanding can contribute to more efficient crop production in the future.

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“…Under salt stress, low R/FR increased the stability of Phytochrome interaction factor (PIF) and upregulated brassinosteroid and auxin signaling, thus promoted hypocotyl growth in Arabidopsis (Hayes et al, 2019). Low R/FR also upregulated SODCC.2, GPX1, APX2 and CAT1 gene expressions and increased antioxidant enzyme (e.g., SOD, POD and CAT) activities, thus enhanced salt resistance in tomato plants (Cao et al, 2018;Wang Y. et al, 2021). Cockburn et al (1996) found that under salt stress, low R/FR enhanced PEP carboxylase activity, and caused accumulation of CAM isoform of PEP carboxylase isozyme and increased terpineol and soluble carbohydrate contents, finally improved salt tolerance in Mesembryanthemum crystallinum plant.…”

Section: Introductionmentioning

confidence: 99%

Low red to far-red light ratio promotes salt tolerance by improving leaf photosynthetic capacity in cucumber

Miao

Gao²,

Li³

et al. 2023

Front. Plant Sci.

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Soil salinity severely inhibits leaf photosynthesis and limits agricultural production. Red to far-red light ratio (R/FR) affects leaf photosynthesis under salt stress, however, its regulation mechanism is still largely unknown. This study investigated the effects of different R/FR on plant growth, gas exchange parameters, photosynthetic electron transport, Calvin cycle and key gene expression under salt stress. Cucumber seedlings were exposed to four treatments including 0 mM NaCl and R/FR=7 (L7, control), 0 mM NaCl and R/FR=0.7 (L0.7), 80 mM NaCl and R/FR=7 (H7) and 80 mM NaCl and R/FR=0.7 (H0.7) for 9 days in an artificial climate chamber. The results showed that compared to L7 treatment, H7 treatment significantly reduced relative growth rate (RGR), CO2 assimilation rate (Pn), maximum photochemical efficiency PSII (Fv/Fm), most JIP-test parameters and total Rubisco activity, indicating that salt stress severely inhibited photosynthetic electron transport from PSII to PSI and blocked Calvin cycle in cucumber leaves. However, these suppressions were effectively alleviated by low R/FR addition (H0.7 treatment). Compared to H7 treatment, H0.7 treatment significantly increased RGR and Pn by 209.09% and 7.59%, respectively, enhanced Fv/Fm, maximum quantum yield for primary photochemistry (φPo), quantum yield for electron transport (φEo) and total Rubisco activity by 192.31%, 17.6%, 36.84% and 37.08%, respectively, and largely up-regulated expressions of most key genes involved in electron transport and Calvin cycle. In conclusion, low R/FR effectively alleviated the negative effects of salt stress on leaf photosynthesis by accelerating photosynthetic electron transport from PSII to PQ pool and promoting Calvin cycle in cucumber plants. It provides a novel environmentally friendly light-quality regulation technology for high efficiency salt-resistant vegetable production.

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Improvement of tomato salt tolerance by the regulation of photosynthetic performance and antioxidant enzyme capacity under a low red to far-red light ratio

Cited by 18 publications

References 48 publications

Tomato salt tolerance mechanisms and their potential applications for fighting salinity: A review

Tomato salt tolerance mechanisms and their potential applications for fighting salinity: A review

Light Intensity- and Spectrum-Dependent Redox Regulation of Plant Metabolism

Low red to far-red light ratio promotes salt tolerance by improving leaf photosynthetic capacity in cucumber

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