Exogenous allantoin improves the salt tolerance of sugar beet by increasing putrescine metabolism and antioxidant activities

Лю, Лэй; Liú, Dan; Wang, Ziyang; Zou, Chunlei; Wang, Bin; Zhang, He; Gai, Zhongtao; Zhang, Pengfei; Wang, Yübo; Li, Caifeng

doi:10.1016/j.plaphy.2020.06.034

Cited by 30 publications

(23 citation statements)

References 64 publications

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“…It has been recognized that the accumulation of osmolytes is an effective strategy for plants to combat osmotic stress caused by salt stress [ 32 ]. In our study, the application of melatonin further increased the contents of osmolytes, including betaine, proline, and soluble sugar ( Figure 3 A–C), and upregulated the expression of genes, including BADH and P5CS ( Figure 8 ), suggesting that melatonin plays an important role in the resistance of sugar beets to salt stress.…”

Section: Discussionmentioning

confidence: 99%

“…Although breeding salt-tolerant varieties is an effective method to overcome salt environments, salt-tolerant genes may influence multiple phenotypes [ 30 ], which hinders the breeding of salt-tolerant varieties. Therefore, the application of exogenous substances is a promising strategy that improves the salt tolerance of plants [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

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Beneficial Effects of Exogenous Melatonin on Overcoming Salt Stress in Sugar Beets (Beta vulgaris L.)

Zhang

Liu

Wang

et al. 2021

Plants

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Melatonin has been regarded as a promising substance that enhances the abiotic stress tolerance of plants. However, few studies have devoted attention to the role of melatonin in improving salt tolerance in sugar beets. Here, the effects of different application methods (foliar application (100 μM), root application (100 μM), and combined foliar and root application) of melatonin on the morphological and physiological traits of sugar beets exposed to salt stress were investigated. The results showed that melatonin improved the growth of sugar beet seedlings, root yield and sugar content, synthesis of chlorophyll, photosystem II (PS II) activity, and gas exchange parameters under salt stress conditions. Moreover, melatonin enhanced the capacity of osmotic adjustment by increasing the accumulation of osmolytes (betaine, proline, and soluble sugar). At the same time, melatonin increased the H+-pump activities in the roots, thus promoting Na+ efflux and K+ influx, which maintained K+/Na+ homeostasis and mitigated Na+ toxicity. In addition, melatonin strengthened the antioxidant defense system by enhancing the activities of antioxidant enzymes, modulating the ASA-GSH cycle, and mediating the phenylalanine pathway, which removed superoxide anions (O2•−) and hydrogen peroxide (H2O2) and maintained cell membrane integrity. These positive effects were more pronounced when melatonin was applied by combined foliar and root application. To summarize, this study clarifies the potential roles of melatonin in mitigating salt stress in sugar beets by improving photosynthesis, water status, ion homeostasis, and the antioxidant defense system.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Beneficial Effects of Exogenous Melatonin on Overcoming Salt Stress in Sugar Beets (Beta vulgaris L.)

Zhang

Liu

Wang

et al. 2021

Plants

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“…Additionally, the application of 5 mM caffeine caused increases of 10, 14, and 25% in the photosynthetic rate of spinach plants grown under Cd stress levels of 0, 50, and 100 µM, respectively, as compared to control plants. The maximum increase of 53% was recorded in the photosynthetic rate of 10 mM caffeine-treated plants grown under 100 µM Cd (Figures 3 and 4) [30,31].…”

Section: Stomatal Conductance and Plant Photosynthetic Efficiencymentioning

confidence: 95%

Exogenous Caffeine (1,3,7-Trimethylxanthine) Application Diminishes Cadmium Toxicity by Modulating Physio-Biochemical Attributes and Improving the Growth of Spinach (Spinacia oleracea L.)

et al. 2022

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Leafy vegetables usually absorb and retain heavy metals more readily than most of the other crop plants, and thus contribute ≥70% of the total cadmium (Cd) intake of humans. Caffeine mediates plant growth and has proved to be beneficial against pathogens and insects. Therefore, it was hypothesized that foliar applications of caffeine could alter metabolism and reduce Cd toxicity in spinach (Spinacia oleracea L.). Seven-day old spinach seedlings were provided with Cd (0, 50, and 100 µM) stress. Caffeine (0, 5, or 10 mM) foliar spray was given twice at after 20 days of seeds germination with an interval of one week. In results, Cd stress reduced photosynthetic pigments biosynthesis, increased oxidative stress, imbalanced nutrient retention, and inhibited plant growth. On the other hand, the caffeine-treated spinach plants showed better growth owing to the enhanced biosynthesis of chlorophylls, better oxidative defense systems, and lower accumulation and transport of Cd within the plant tissues. Furthermore, caffeine application enhanced the accumulation of the proline and ascorbic acid, but reduced MDA and H2O2 contents and Cd in plant leaves, and ultimately improved mineral nutrition of spinach plants exposed to different Cd regimes. In conclusion, exogenous application of caffeine significantly diminishes Cd stress by modulating physiological, biochemical, and growth attributes of spinach (Spinacia oleracea L.)

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“…Except for allantoin, all of the compounds are flavonoid-3-O-glycosides, i.e., phenolic compounds containing a flavonoid moiety which is O-glycosidically linked to carbohydrate moiety at the C3-position [89], and display important bioactivities, such as antioxidant [90]. Allantoin is a nitrogen-containing metabolite and an intermediate product of purine metabolism [91], accumulates in high levels under various stress conditions, including excessive UVA radiation and hypersalinity [92], and has emerged as a molecule involved in increasing stress tolerance in plants [93,94]. It was identified in different halophytes such as Crithmum maritimum L [7] and Suaeda fruticosa (L.) Forssk.…”

Section: Polyphenolic Compoundsmentioning

confidence: 99%

A Review on Sarcocornia Species: Ethnopharmacology, Nutritional Properties, Phytochemistry, Biological Activities and Propagation

Custódio

Rodrigues

Pereira

et al. 2021

Foods

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Sarcocornia A. J. Scott is a halophytic edible succulent plant belonging to the Amaranthaceae family. To date, the genus includes 28 species distributed worldwide in saline environments, usually salt marshes. Sarcocornia (Scott) is similar to Salicornia (L.), which has a recognized commercial value in morphological and taxonomical traits. Species of both genera are commonly named samphire or glassworts in Europe, and their fleshy shoots are commercialized under their traditional names. Due to their nutritional, organoleptic and medicinal properties, Sarcocornia species have a high economic potential in various biotechnology sectors. Being highly tolerant to salt, they can be cultivated in saline conditions, and dissimilar to Salicornia, they are perennial, i.e., they can be harvested year-round. Therefore, Sarcocornia species are considered promising gourmet vegetables to be explored in the context of climate change, soil and water salinization and eco-sustainability. We hereby put together and reviewed the most relevant information on Sarcocornia taxonomy, morphology, nutritional and pharmacological properties, uses in ethnomedicine, potential applications in biotechnology, and propagation strategies.

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Exogenous allantoin improves the salt tolerance of sugar beet by increasing putrescine metabolism and antioxidant activities

Cited by 30 publications

References 64 publications

Beneficial Effects of Exogenous Melatonin on Overcoming Salt Stress in Sugar Beets (Beta vulgaris L.)

Beneficial Effects of Exogenous Melatonin on Overcoming Salt Stress in Sugar Beets (Beta vulgaris L.)

Exogenous Caffeine (1,3,7-Trimethylxanthine) Application Diminishes Cadmium Toxicity by Modulating Physio-Biochemical Attributes and Improving the Growth of Spinach (Spinacia oleracea L.)

A Review on Sarcocornia Species: Ethnopharmacology, Nutritional Properties, Phytochemistry, Biological Activities and Propagation

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