Role of sugars under abiotic stress

Sami, Fareen; Yusuf, Mohammad; Faizan, Mohammad; Faraz, Ahmad; Hayat, Shamsul

doi:10.1016/j.plaphy.2016.09.005

Cited by 524 publications

(297 citation statements)

References 88 publications

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“…On the other hand, no differences were observed in fructose content in four strawberry cultivars submitted to water deficit, indicating that the effect of these stresses on the content of soluble sugars might be stress and / or dose‐dependent as well as species or cultivar specific. Sugar accumulation seems to improve fruit tolerance to abiotic stresses, keeping cell turgor, as well as membrane protection, and scavenging free radicals …”

Section: Resultsmentioning

confidence: 99%

Untargeted metabolomics of strawberry (Fragaria x ananassa ‘Camarosa’) fruit from plants grown under osmotic stress conditions

et al. 2019

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BACKGROUND Plants activate defense mechanisms to cope with adverse environmental conditions, leading to the accumulation and / or depletion of general and specialized metabolites. In this study, a multiplatform untargeted metabolomics strategy was employed to evaluate metabolic changes in strawberry fruit of cv. Camarosa grown under osmotic stress conditions. Liquid chromatography‐mass spectrometry (LC‐MS/MS) and gas chromatography‐mass spectrometry (GC‐MS) data from strawberries grown under two water‐deficit conditions, irrigated at 95% crop evapotranspiration (ETc) and 85% ETc, and one excess salt condition with a 80 mmol L−1 NaCl solution, were analyzed to determine treatment effects on fruit metabolism. RESULTS Multivariate principal component analysis, orthogonal projections to latent structures – discriminant analysis (OPLS‐DA), and univariate statistical analyses were applied to the data set. While multivariate analyses showed group separation by treatment, T‐tests and fold change revealed 12 metabolites differentially accumulated in strawberries from different treatments – among them phenolic compounds, glycerophospholipids, phytosterols, carbohydrates, and an aromatic amino acid. CONCLUSION Untargeted metabolomic analysis allowed for the annotation of compounds differentially accumulated in strawberry fruit from plants grown under osmotic stress and non‐stressed plants. The metabolic disturbance in plants under stress involved metabolites associated with the inhibition of reactive oxygen species and cell‐wall and membrane lipid biosynthesis, which might serve as osmotic stress biomarkers. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Untargeted metabolomics of strawberry (Fragaria x ananassa ‘Camarosa’) fruit from plants grown under osmotic stress conditions

et al. 2019

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“…Trehalose-6-phosphate (Tre6P) appeared to be essential for the growth of A. thaliana, in a study on transgenic plants overexpressing the enzymes involved in trehalose metabolism [44,45]. It was also found that, under stress conditions, the application of glucose stimulated the shoot growth that was restricted by stress [12]. However, under some conditions (for example, low temperature and nutrient deficiency), the growth of plants is limited, despite abundant sugar availability [46].…”

Section: Introductionmentioning

confidence: 99%

“…The influence of sugars on the expression of genes (including those controlling the growth processes) is often modified by environmental factors, such as changes in the intensity of irradiation or in the access to minerals. The sugars accumulated under drought or cold mainly play the role of osmoregulators and cryoprotectans, but also as a stored source of carbon for later use (when the stress factor ceases to exist); they can also act as regulators modulating plant growth under new conditions [10,12,15,17,18,69]. Soluble sugars (such as, disaccharides, raffinose family oligosaccharides, and fructans) are strongly related to the accumulation of reactive oxygen species under stress conditions.…”

Section: Introductionmentioning

confidence: 99%

Regulatory roles of sugars in plant growth and development

Ciereszko

2018

Acta Soc Bot Pol

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In recent years, several studies have focused on the factors and mechanisms that regulate plant growth and development, as well as the functioning of signaling pathways in plant cells, unraveling the involvement of sugars in the processes regulating such growth and development. Saccharides play an important role in the life of plants: they are structural and storage substances, respiratory substrates, and intermediate metabolites of many biochemical processes. Sucrose is the major transport form of assimilates in plants. Sugars can also play an important role in the defense reactions of plants. However, it has been shown that glucose, sucrose, or trehalose-6-phosphate (Tre6P) can regulate a number of growth and metabolic processes, acting independently of the basal functions; they can also act as signaling molecules. Changes in the concentration, qualitative composition, and transport of sugars occur continuously in plant tissues, during the day and night, as well as during subsequent developmental stages. Plants have developed an efficient system of perception and transmission of signals induced by lower or higher sugar availability. Changes in their concentration affect cell division, germination, vegetative growth, flowering, and aging processes, often independently of the metabolic functions. Currently, the mechanisms of growth regulation in plants, dependent on the access to sugars, are being increasingly recognized. The plant growth stimulating system includes hexokinase (as a glucose sensor), trehalose-6-phosphate, and TOR protein kinase; the lack of Tre6P or TOR kinase inhibits the growth of plants and their transition to the generative phase. It is believed that the plant growth inhibition system consists of SnRK1 protein kinases and C/S1 bZIP transcription factors. The signal transduction routes induced by sugars interact with other pathways in plant tissues (for example, hormonal pathways) creating a complex communication and signaling network in plants that precisely controls plant growth and development.

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“…For instance, proline content (Pc) is an essential amino acid for primary metabolisms and increases in plant under environmental stresses such as salinity (Choudhary et al, 2005) and aeration deficit (Vartapetian and Jackson, 1997), especially in sensitive cultivars and long stress spells (Olgun et al, 2008). Under low matric suction or waterlogging, the Pc accumulation in legumes is correlated to the inverse of root porosity and aeration (Striker and Colmer, 2016) and acts as a biomolecule stabilizer, where under salinity stress, the Pc works as an osmolyte (Sami et al, 2016). Watad et al (1983) showed that proline increases linearly with salinity after a threshold concentration (35 mM NaCl).…”

Section: Introductionmentioning

confidence: 99%

Some physiological responses of wheat and bean to soil salinity at low matric suctions

Khatar

Mohammadi

Shekari

2017

International Agrophysics

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A b s t r a c t. The effect of soil matric suction (2-33 kPa) and salinity (soil solution electrical conductivity 0.7-8 dS m -1 for bean and 2-20 dS m -1 for wheat) on some physiological characteristics of bean and wheat in a clay loam soil under greenhouse condition was investigated. The results showed that the leaf chlorophyll content index and potassium concentration decrease under salinity stress and increase with matric suction from 2 to 33 kPa suction for both plants. The wheat chlorophyll content index declines during the stress spell but bean chlorophyll content index remains nearly constant. The lowest values of the content of soluble sugars and the highest values of leaf proline content are observed at 2 kPa matric suction (highest aeration stress) for bean and wheat. As matric suction increases from 2 to 6 kPa, the soluble sugars increases and proline content decreases significantly and then soluble sugars decreases and proline content increases until 10 kPa suction, and the soluble sugars remains nearly constant at the higher matric suctions for both plants. While the electrical conductivity effect on the soluble sugars is not significant, the values of proline content for both crop increase significantly with electrical conductivity. It was shown that the aeration stress can result in more considerable and rapid physiological responses, in comparison with salinity stress. There is a strong correlation between wheat and bean chlorophyll content index and potassium concentration under salinity and aeration stresses.K e y w o r d s:

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Role of sugars under abiotic stress

Cited by 524 publications

References 88 publications

Untargeted metabolomics of strawberry (Fragaria x ananassa ‘Camarosa’) fruit from plants grown under osmotic stress conditions

Untargeted metabolomics of strawberry (Fragaria x ananassa ‘Camarosa’) fruit from plants grown under osmotic stress conditions

Regulatory roles of sugars in plant growth and development

Some physiological responses of wheat and bean to soil salinity at low matric suctions

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