Salt-induced accumulation of glycine betaine is inhibited by high light in durum wheat

Carillo, Petronia; Parisi, D; Woodrow, Pasqualina; Pontecorvo, Giovanni; Massaro, G; Annunziata, Maria Grazia; Fuggi, Amodio; Sulpice, Ronan

doi:10.1071/fp10177

Cited by 51 publications

(52 citation statements)

References 58 publications

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“…Ions were assayed according to Carillo et al (2011). Root sap osmolality was measured according to Cuin et al (2009).…”

Section: Methodsmentioning

confidence: 99%

“…Ascorbic acid (ASCAc), dehydroascorbic acid (DHA), reduced and oxidized glutathione (GSH and GSSG) were extracted as described by Annunziata et al (2012) and Woodrow et al (2012) and determined according to Queval and Noctor (2007). Malondialdehyde was assayed according to Carillo et al (2011). Contribution of metabolites and ions to osmolality was calculated according to Cuin et al (2009) and Puniran-Hartley et al (2014).…”

Section: Methodsmentioning

confidence: 99%

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Durum Wheat Roots Adapt to Salinity Remodeling the Cellular Content of Nitrogen Metabolites and Sucrose

et al. 2017

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Plants are currently experiencing increasing salinity problems due to irrigation with brackish water. Moreover, in fields, roots can grow in soils which show spatial variation in water content and salt concentration, also because of the type of irrigation. Salinity impairs crop growth and productivity by inhibiting many physiological and metabolic processes, in particular nitrate uptake, translocation, and assimilation. Salinity determines an increase of sap osmolality from about 305 mOsmol kg−1 in control roots to about 530 mOsmol kg−1 in roots under salinity. Root cells adapt to salinity by sequestering sodium in the vacuole, as a cheap osmoticum, and showing a rearrangement of few nitrogen-containing metabolites and sucrose in the cytosol, both for osmotic adjustment and oxidative stress protection, thus providing plant viability even at low nitrate levels. Mainly glycine betaine and sucrose at low nitrate concentration, and glycine betaine, asparagine and proline at high nitrate levels can be assumed responsible for the osmotic adjustment of the cytosol, the assimilation of the excess of ammonium and the scavenging of ROS under salinity. High nitrate plants with half of the root system under salinity accumulate proline and glutamine in both control and salt stressed split roots, revealing that osmotic adjustment is not a regional effect in plants. The expression level and enzymatic activities of asparagine synthetase and Δ1-pyrroline-5-carboxylate synthetase, as well as other enzymatic activities of nitrogen and carbon metabolism, are analyzed.

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“…Ions were assayed according to Carillo et al (2011). Root sap osmolality was measured according to Cuin et al (2009).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Durum Wheat Roots Adapt to Salinity Remodeling the Cellular Content of Nitrogen Metabolites and Sucrose

et al. 2017

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“…Under optimal conditions, the nodal buds sprout up to 70-80 % but suboptimal conditions decline the sprouting potential to as low as 20 % (Wahid et al 1997;Lakshmanan et al 2005;Carillo et al 2011). Since sugarcane buds are vegetative propagules, there is a strong need to determine the physiological and developmental basis of declined bud sprouting and find strategies to improve sugarcane stand per unit area.…”

Section: Introductionmentioning

confidence: 98%

“…In this way, it is beneficial to enhance protection without the costs associated with constitutive expression of stress-related genes (Baldwin et al 2006;Hulten et al 2006;Annicchiarico et al 2015). Osmolytes like proline and GB, by virtue of stress-combating actions, are strong candidates for priming the plants against abiotic stresses (Carillo et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Partial repair of salinity-induced damage to sprouting sugarcane buds by proline and glycinebetaine pretreatment

et al. 2015

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Sugarcane shows reduced crop stand under relatively suboptimal conditions; the main reason for this is its sensitivity to ionic stress in the soil solution. This research was performed to explore some physiological and developmental changes in the immature sugarcane buds submitted to salt stress and possible role of glycinebetaine (GB) and proline (Pro) in mitigating the ion toxicity in a time course manner. Salinity stress reduced fresh and dry weight, induced the generation of hydrogen peroxide, increased tissue levels of Na(+) sand Cl(-), reduced K(+) and Ca(2+), and K(+):Na(+) and Ca(2+):Na(+) ratios, while increasing the osmolyte synthesis in expanding sugarcane buds. Salinity stress reduced and delayed the formation of new bud leaves and their expansion, which was mainly because of reduction in the number and area of mesophyll cells and poor development of vascular bundles. The pretreatment of bud chips with 20 mM each of GB and Pro decreased tissue levels of Na(+) and Cl(-), reduced the generation of H2O2, improved K(+) and Ca(2+), K(+):Na(+) and Ca(2+):Na(+) ratios, and further increased the levels of GB, free proline (FP), and soluble sugars in the buds. The pretreatment increased mesophyll cell number and expansion of bud leaves and formation of elaborated vascular tissues, which apparently enabled the sprouting buds to adapt to salinity stress. Of the two osmolytes, GB was a relatively better inducer of salinity tolerance than Pro. In short, salinity-induced oxidative stress was the main cause for altered tissue development, the production of which was offset by pretreatment of bud tissues with Pro and GB.

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“…The concentration of GB is always reported high in various stresses mainly salt stress (Carillo et al, 2011). Its biosynthesis in rice is important for increased salt tolerance (Sakamoto and Murata, 1998).…”

Section: Proline (Pro) and Glycinebetaine (Gb)mentioning

confidence: 99%

Effect of salinity stress on carbohydrate, lipid peroxidation and proline contents of two horse gram [Macrotyloma uniflorum (Lam.) Verdc] varieties

Sathish¹

2017

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This study was conducted to investigate the effects of different concentrations (0, 40, 80 and 120mM) of salinity on horse gram [Macrotyloma uniflorum (Lam.) Verdc] plants grown in pots. The two horse gram varieties PAIYUR-2 and CO-1 were used for the study. Sampling was done on 15 th Days After Treatment (DAT) and 30 th DAT from control and salinity treated plants. The response of the horse gram plants to salinity stress was analysed by estimating the levels of carbohydrates, starch, lipid peroxidation, proline and glycine betaine. Higher salinity markedly reduced sugar concentration in both horsegram varieties, while starch content showed reverse trend. Lipid peroxidation (estimated by MDA content) significantly increased under salinity in both varieties but the rate of increment was higher in CO-1. The concentration of proline and glycine betaine were also altered under salinity. From the results of this investigation, it may be concluded that plants of variety PAIYUR-2 have high adaptive potential under salinity when compared to variety CO-1.

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Salt-induced accumulation of glycine betaine is inhibited by high light in durum wheat

Cited by 51 publications

References 58 publications

Durum Wheat Roots Adapt to Salinity Remodeling the Cellular Content of Nitrogen Metabolites and Sucrose

Durum Wheat Roots Adapt to Salinity Remodeling the Cellular Content of Nitrogen Metabolites and Sucrose

Partial repair of salinity-induced damage to sprouting sugarcane buds by proline and glycinebetaine pretreatment

Effect of salinity stress on carbohydrate, lipid peroxidation and proline contents of two horse gram [Macrotyloma uniflorum (Lam.) Verdc] varieties

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