NPR1 is a key regulator of the salicylic acid (SA) dependent pathogen resistance pathway in plants. In this issue of Cell, Mou and Dong demonstrate that Arabidopsis NPR1 undergoes activation from an inactive oligomer to the active monomer as a result of cellular redox changes induced by SA during systemic acquired resistance.

to determine the effects of pre-harvest salicylic acid (sa) treatments on postharvest life and quality of apricot fruits, four different concentrations (one, 1.5, three and 4.5 mm) were applied six days before harvesting of apricot fruits cv. ‘shamlou’. fruits harvested at commercial maturity stage and stored at 2ºc with 90 percent rh on the same day for a period of three weeks. the fruit was e...

modern biotechnology and genetic engineering using techniques and special ‎laboratory tools plays an important role in the pharmaceutical industry and medicinal ‎plant propagation. among these techniques, it can be noted that a wide range of ‎elicitors are widely used for inducing metabolites at invitro culture. due to the ‎pharmaceutical properties of artichoke and its history, it has been dee...

Method: Recently, plant hormones have been considered to reduce fungal severity. Five different plant hormones namely 2, 4-D (2,4Dichlorophenoxyacetic acid); BAP (6Benzylaminopurine); Dicamba (3,6Dichloro-2-methoxybenzoic acid, 3,6-Dichloro-o-anisic acid); IAA (Indole-2-acetic acid) and SA (Salicylic acid) were selected to examine their antifungal activity against the growth of two species of d...

Tomato fruits are usually characterized by a short postharvest life. Their quality decreases during storage due to losses in nutritional and decay. Salicylic acid (SA) has an important role plant development response environmental stress. This research aimed at evaluating the effects of preharvest salicylic application on extending life, ripening tomatoes ( Solanum lycopersicum cv. Baraka). As ...

Plants are exposed to abiotic and biotic stress conditions throughout their lifespans that activates various defense programs. Programmed cell death (PCD) is an extreme defense strategy the plant uses to manage unfavorable environments as well as during developmentally induced senescence. Here we investigated the role of leaf age on the regulation of defense gene expression in Arabidopsis thali...

Using Botrytis cinerea we confirmed in the present work several previous studies showing that salicylic acid, a main plant hormone, inhibits fungal growth in vitro. Such an inhibitory effect was also observed for the two salicylic acid derivatives, methylsalicylic and acetylsalicylic acid. In marked contrast, 5-sulfosalicylic acid was totally inactive. Comparative proteomics from treated vs. co...