Nitrogen and photorespiration pathways, salt stress genotypic tolerance effects in tomato plants (Solanum lycopersicum L.)

Torre-González, Alejandro de la; Navarro‐León, Eloy; Blasco, Begoña; Ruiz, Juan M.

doi:10.1007/s11738-019-2985-8

Cited by 8 publications

(6 citation statements)

References 32 publications

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“…Notably, the increase in transcription levels of GGAT and SGAT may ensure the stability of PSII and the water-retaining capability of leaves; this is proved by the significant positive correlations of GGAT vs. F v /F 0 (r = 0.483, p < 0.05) and SGAT vs. WUE (r = 0.578, p < 0.05) ( Table S3 ). These assumptions are also proved by the results in wild-type duckweed ( Lemna mino ) and Solanum lycopersicum L. [ 14 , 15 ]. On the 30th day of salt stress, slower upregulated expression of SGAT and significantly downregulated expressions of photorespiration-metabolizing enzyme genes, such as GGAT , GLYK , and FdGOGAT , indicate depressed photorespiration [ 12 ].…”

Section: Discussionmentioning

confidence: 84%

“…It has been reported that increased SGAT activity in salt-stressed transgenic duckweed resulted in a higher maximum quantum yield of photosystem II (F v /F m ), improved cell membrane integrity, and a strengthened antioxidant system [ 14 ]. GGAT may inhibit chlorophyll degradation or accelerate N metabolism to improve the saline stress tolerance of plants [ 12 , 15 ]. Another key enzyme-like glutamate synthase (GOGAT) could promote the generation of osmoprotective amino acids, such as proline [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Responses of Physiology, Photosynthesis, and Related Genes to Saline Stress in Cornus hongkongensis subsp. tonkinensis (W. P. Fang) Q. Y. Xiang

Yuan

Sun

et al. 2022

Plants

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Cornus hongkongensis subsp. tonkinensis (W. P. Fang) Q. Y. Xiang is a native evergreen species with high ornamental value for abundant variations in leaf, bract, fruit, and tree gesture. To broaden its cultivation in coastal saline soil, salt damage and survival rate, physiological responses, photosynthetic performance, and related genes were evaluated for annual seedlings exposed to 0.3% salt (ST) concentrations for 60 days. Syndromes of salt damage were aggravated, and the survival rate decreased with prolonged stress duration; all stressed seedlings displayed salt damage, and 58.3% survived. Under short-term saline stress (5 d), marked increases in malondialdehyde (MDA), relative electrical conductivity (REC), and decreases in superoxide dismutase (SOD), photosynthetic rate (Pn), stomatal conductance (gs), and internal carbon dioxide concentration (Ci) were recorded. The stable leaf water use efficiency (WUE) and chlorophyll content were positive physiological responses to ensure photosynthetic performance. Meanwhile, the expression levels of genes related to photosystem II (psbA) and photorespiration (SGAT and GGAT) were upregulated, indicating the role of photorespiration in protecting photosynthesis from photoinhibition. After 30 days of stress (≥30 d), there was a significant increase in MDA, REC, soluble sugar (SS), soluble protein (SP), and Ci, whereas descending patterns in Pn, gs, WUE, the maximal photochemical efficiency of photosystem II (Fv/Fm), and potential activities of PSII (Fv/F0) occurred in salt-stressed seedlings, compared with CK. Meanwhile, the expression levels of related genes significantly dropped, such as psbA, LFNR, GGAT, GLYK, and PGK, indicating photoinhibition and worse photosynthetic performance. Our results suggest that the moderate salt tolerance of C. hongkongensis subsp. tonkinensis mostly lies in a better photosynthetic system influenced by active photorespiration. Hence, these results provide a framework for better understanding the photosynthetic responses of C. hongkongensis subsp. tonkinensis to salt stress.

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Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Responses of Physiology, Photosynthesis, and Related Genes to Saline Stress in Cornus hongkongensis subsp. tonkinensis (W. P. Fang) Q. Y. Xiang

Yuan

Sun

et al. 2022

Plants

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“…Salinity causes significant modifications in gene expression of plants. Such modifications may affect the accumulation or reduction of certain metabolites, consequential in the inequality in the levels of a relatively little set of cellular proteins, which could increase, decrease, appear, or disappear after salt exposure [33]. Several salt-induced proteins have been recognized in plant species [34] [35].…”

Section: Discussionmentioning

confidence: 99%

“…Mohammed (2007) [40] reported that it is important to know how the sink source relationships are affected in plant growth under salt stress conditions, because the efficient use of assimilating may be a limiting factor to plant growth under salinity. The relative ability of the plant or plant organ to stimulate the accumulation of cytosol substances in its tissues (osmotic adjustment) will partially determine its tolerance to stress conditions [4] [33]. Treatments wheat plants with Zn or Ni generally increased the values of OP under salinity stress.…”

Section: Discussionmentioning

confidence: 99%

The Impact of Minerals on Wheat Plants Grown under Salinity Stress

Taha¹,

El-Samad²

2022

AJPS

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“…It is estimated that approximately 20% of the irrigated land in the world is affected by salinity and is exclusively classified as arid and desert lands, comprising 25% of the total land of our planet (de la Torre-González et al, 2020;Wang et al, 2019). Soil salinity is a major constraint on food production because it limits crop yield and restricts the use of previously uncultivated land (Hernández, 2019;Li et al, 2018;Uddin et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of Zinc and Nickel Treatments on Improvement of the Osmotic Defense System of Wheat Plant Under Salinity Stress

El-Samad

Taha

2022

Acta Agro

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The present experiments were performed to determine the effects of Zn (20 µM and 200 µM) and Ni (1 µM and 100 µM) on the growth and metabolic activities in the roots, shoots, and spikes of wheat ( Triticum aestivum L.) cv. Gimiza 11 grown under different salinity conditions. In addition to identifying the osmotic tolerance of wheat, the roles of Zn and Ni in alleviating osmotic stress were examined. The root was the organ most sensitive to osmotic stress, whereas the shoot was the most resistant, and the spike was the intermediate. These three organs negatively responded to increasing osmotic stress levels, as fresh and dry matter decreased, and related biochemical parameters were adversely affected. However, fresh and dry matter were generally elevated when plants were supplemented with Zn or Ni under increasing osmotic stress. The sensitivity of roots was associated with depletion in the concentrations of sugars and free proline, whereas soluble protein and amino acid levels were increased. The stress tolerance of shoots and spikes was accompanied by an increase in soluble sugars, soluble proteins, and proline, while amino acid levels increased in spikes only. The Na + and K + content in wheat plants increased with increasing NaCl-induced osmotic stress levels. In turn, the accumulation and partitioning of Na + and K + did not vary among the three organs, both at different salt concentrations and between Zn or Ni treatments. Moreover, the present results show that the concentrations of anthocyanins, flavonoids, and l -ascorbic acid increased under exposure to osmotic stress and did not change significantly under Zn or Ni treatments.

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Nitrogen and photorespiration pathways, salt stress genotypic tolerance effects in tomato plants (Solanum lycopersicum L.)

Cited by 8 publications

References 32 publications

Responses of Physiology, Photosynthesis, and Related Genes to Saline Stress in Cornus hongkongensis subsp. tonkinensis (W. P. Fang) Q. Y. Xiang

Responses of Physiology, Photosynthesis, and Related Genes to Saline Stress in Cornus hongkongensis subsp. tonkinensis (W. P. Fang) Q. Y. Xiang

The Impact of Minerals on Wheat Plants Grown under Salinity Stress

Effect of Zinc and Nickel Treatments on Improvement of the Osmotic Defense System of Wheat Plant Under Salinity Stress

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