Salicylic acid (SA) is one component of a complex signalling pathway that is induced by a number of biotic and abiotic stresses. Exposing seedling radicles to aqueous solutions of 0.5 mM salicylic acid for 24 h before chilling at 2.5 degrees C for 1-4 days reduced the chilling-induced increase in electrolyte leakage from maize and rice leaves, and cucumber hypocotyls, but not from their radicle...

16 17 The protective effect exerted by polyamines (Put and Spd) against cadmium (Cd) 18 stress was investigated in Brassica juncea plants. Treatment with CdCl2 (75 μM) 19 resulted in a rise of Cd accumulation, a decrease of fresh and dry weights in every 20 plant organ, an increase of free polyamine content at limb and stem levels as well as a 21 decrease at root level. On the other hand, the t...

In this study, the effects of salinity stress (NaCl) on the activity of Catalase (CAT), Guaiacol Peroxidase (POD), and Superoxide dismutase (SOD) were studied in leaves of fifteen oilseed rape (Brassica napus L.) cultivars (Champlain, Hayola401, Licord, Modena, NK Aviator, NK Karibik, NK Octan, Okapy, Opera, PF, RGS, RNX 3621, SLM046, Talayeh, Zarfam). Plants were grown in a greenhouse under co...

A peroxidase (DyP) involved in the decolorization of dyes and produced by the fungus strain Geotrichum candidum Dec 1 was purified. DyP, a glycoprotein, is glycosylated with N-acetylglucosamine and mannose (17%) and has a molecular mass of 60 kDa and an isoelectric point (pI) of 3.8. The absorption spectrum of DyP exhibited a Soret band at 406 nm corresponding to a hemoprotein, and its Na2S2O4-...

A B S T R A C T Evidence for the presence of peroxidative metabolism in rabbit alveolar macrophages (AM) has been obtained from the following observations: (a) catalase is present in high concentrations; (b) peroxidase activity could not be detected employing guaiacol as substrate; (c) the irreversible inhibition of AM catalase by aminotriazole served as a detection system for H202 and demonstr...

A B S T R A C T Evidence for the presence of peroxidative metabolism in rabbit alveolar macrophages (AM) has been obtained from the following observations: (a) catalase is present in high concentrations; (b) peroxidase activity could not be detected employing guaiacol as substrate; (c) the irreversible inhibition of AM catalase by aminotriazole served as a detection system for H202 and demonstr...

peppermint (mentha piperita l.), a herbaceous and perennial species whichis produced mainly for the medicine and food. the peppermint plants were initiated from 10 cm-long rhizome cuttings followed by transferring into pots. the 48 h-treated plants with methyl jasmonate (mj) concentrations (0, 0.1, 0.5 mm) were assessed for their total soluble proteins, malondialdehyde (mda), chlorophylls a, b ...

Due to high water content and perishability, the raspberry fruit is sensitive postharvest fungal contamination losses. In this study, chitosan was used as an edible coating increase storage of raspberries, nanotechnology efficiency. The treated with emulsion containing nanoparticles (ECNPC) at 0, 2.5, 5 g L?1, stored for 9 d. Decay extension rate, phytochemical contents, including total phenoli...

This study aimed to determine the effects of plant species on biological parameters Tetranychus urticae Koch and time mite infestation physiology in Ocimum basilicum L., Melissa officinalis L. Salvia Mite induced various levels oxidative stress depending duration infestation. Host plants affected T. life table parameters. The low level susceptibility was characteristic S. officinalis, which app...

White campion (Silene latifolia) is a dioecious plant that emits 1,2-dimethoxybenzene (veratrole), a potent pollinator attractant to the nocturnal moth Hadena bicruris. Little is known about veratrole biosynthesis, although methylation of 2-methoxyphenol (guaiacol), another volatile emitted from white campion flowers, has been proposed. Here, we explore the biosynthetic route to veratrole. Feed...