abstract background and objectives: soil salinity is one of the most important limited factors of plant productions. physiological drought resulting from salinity stress is one of the main reasons of limiting water absorption from soil. moreover, increasing the salt absorption by plants cause to disorder in physiological and cellular processes. spearmint (mentha spicata l.) is from lamiaceae fa...

environmental stresses such as drought have important effects on plant growth and development. in order to evaluate the effect of drought tolerance, 12 chickpea genotypes were treated with drought stress in hydroponic condition in greenhouses. treatments were a control and two stress treatments -3 and -6 bar that was created with polyethylene glycol in hydroponic condition. two weeks after the ...

In order to study the survival mechanisms to drought stress for fruit body of Auricularia auricula, soluble carbohydrates and respiratory enzymes were investigated. Fruit bodies were exposed to sunlight and were naturally dehydrated. Samples were taken at different levels of water loss (0%, 10%, 30%, 50% and 70%) to measure the content of soluble sugars and polysaccharides. The activities of ph...

Olive leaves are considered to have great potential as natural sources of antioxidants and phenolic compounds. In this study, dried olive were extracted using four different solvents (water, methanol, ethanol, 80:20(v/v) methanol-water) with ultrasonic-assisted extraction. The biochemical (total phenolics flavonoids, total protein, free amino acids, soluble, reducing sugars) antioxidant activit...

Here, we investigated that the mechanocatalytic depolymerization of cellulose in the presence of Aquivion, a sulfonated perfluorinated ionomer. Under optimized conditions, yields of water soluble sugars of 90-97% were obtained using Aquivion PW98 and PW66, respectively, as a solid acid catalyst. The detailed characterization of the water soluble fraction revealed (i) the selective formation of ...

The purpose of these studies is to assess the adaptive resistance apple tree winter stresses in terms physiological and biochemical parameters, identify most resistant varieties for cultivation Krasnodar region. Objects research are various origins: Orfey, Idared, Ligol, Prikubanskoe. It was found that cryoprotective function water-soluble sugars maximally manifested Orfey their content increas...

Morphology changes in bacterial cellulose produced by Acetobacter xylinum ATCC23769 were ob­ served in the presence of /3 -glucodisaccharides such as gentiobiose and cellobiose. Endo-/3 -1,4-glucanase ac­ tivity in culture broth was higher than that in the absence of those sugars. So we have investigated the prop­ erties of endo-/3 -1,4-glucanase (AEG) produced by this bacterium. This enzyme co...

primary bud necrosis (pbn) in grapevine is a physiological disorder that leads to death of fruitful buds and yield loss. the aim of this study was to determine the changes in soluble sugars and starch and their relationship to the incidence of the primary bud necrosis in askari grapevine. experiment was conducted in a vineyard that the vines were 15 years old, with a head system, vines spaced 2...