The effect of harpin protein on plant growth parameters, leaf chlorophyll, leaf colour and percentage rotten fruit of pepper plants inoculated with Botrytis cinerea

Proteome Analysis of Abundant Proteins Extracted from the Leaf of Gynura procumbens (Lour.) Merr

“…Harpin binding protein 1 was marketed as bio-activator to counteract the undesirable effects of pesticides. Harpin protein activates plant pathway that control several growth mechanisms, such as jasmonic acid pathway for plant defense [20]. On the other hand, peroxidase, catalase and glutathione transferase are proteins involve in metabolism of hydrogen peroxides (H 2 O 2 ), an indicator to environmental stress [21].…”

Bell Pepper Plant Growth, Gas Exchange, Mineral Nutrition, Phytophtora Blight, Fruit Yield, and Postharvest Fruit Decay as Affected by Harpin Protein

“…In a study conducted in Georgia (U.S.), foliar applications of harpin had no beneficial effect on cotton lint yield, fiber quality, and crop maturity (Bednarz et al 2002). Harpin also had no effect on the height, stem diameter, and number of leaves of bell pepper plants (Akbudak et al 2006). Thus, the plant responses to harpin seem to be affected by environment and by crop.…”

“…These compounds are of interest as a means to reduce or eliminate the use of pesticides particularly in sustainable or organic production systems (Copping and Menn 2000). In addition to eliciting the HR and systemic acquired resistance in plants, harpin has been found to stimulate plant vigor; increase plant biomass, plant height, fruit yield, fruit quality, and stress tolerance; and reduce decay after harvest in a range of agronomic and horticultural crops (Akbudak et al 2006;Anonymous 2000;Bednarz et al 2002;Copping and Menn 2000;Sticher, MauchMani, and Metraux 1997;Wei et al 1992;Yang et al 2005). Harpin induces local and systemic resistance against pink rot (caused by Trichothecium roseum) in Hami melons (Yang et al 2005) and resistance to blue mold (caused by Penicillium expansum) in 'Red Delicious' apple fruit (de Capdeville et al 2003).…”

“…Harpin induces local and systemic resistance against pink rot (caused by Trichothecium roseum) in Hami melons (Yang et al 2005) and resistance to blue mold (caused by Penicillium expansum) in 'Red Delicious' apple fruit (de Capdeville et al 2003). In three pepper cultivars inoculated with Botrytis cinerea, causal agent of gray mold, harpin reduced the leaf chlorophyll losses and the percentage of fruit spoilage after harvest (Akbudak et al 2006). Plant responses to harpin, however, have not been consistent.…”

Improve bioavailability of Harpin protein on plant use PLGA based nanoparticle

“…Second, Harpin can stimulate some gene expression correlated with growth, such as growth factors, elements of ethylene signaling pathway, etc. (Akbudak et al, 2006). Harpin also enhances stress resistance of plant by inducing cold-regulated genes, heat shock genes expression (Bleecker and Kende, 2000).…”