Ethylene Effects
نویسنده
چکیده
Biological Attributes of Ethylene: Colorless gas at biological temperatures. Naturally occurring organic compound. Readily diffuses from tissue. Produced from methionine via ACC by a highly regulated metabolic pathway. Key enzymes are ACC synthase and ACC oxidase. C2H4 synthesis is inhibited by C2H4 in vegetative and immature reproductive tissue. C2H4 synthesis is promoted (autocatalytic) by C2H4 in mature reproductive climacteric tissue. Effective at ppm and ppb concentrations (1 ppm = 6.5 x 10 M at 25 °C). Requires O2 to be synthesized, and O2 and low levels of CO2 to be active.
منابع مشابه
Comparison of Plant Growth Regulators and Exogenous Ethylene Effects on Two Types of Cut Carnation (Dianthus caryophyllus L.)
The main object of this study is to investigate the effect of plant growth regulators on the prolongation of vase life of two kinds of cut carnation under normal and ethylene. Carnation is one of the most popular flowers that has a short life due to its sensitivity to ethylene. Also, the effect of plant growth regulators on several physiological traits under ethylene stress and normal condition...
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Carnation (Dianthus caryophyllus L.) is one of the most important cut flowers in the world. Themajority of thecarnation cultivars are sensitive to ethylene which affected the physiological and biochemical postharvest characteristics of these flowers.Applying inhibitors of biosynthesis and action of ethylene is important factor to protect the display quality and extend postharvest life. In order...
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BACKGROUND: Some herbal plants can prevent kidney stones formation in a dose dependent manner. In present study, we aimed to investigate the protective role of Cannabis sativa aqueous extraction on calcium oxalate formation in ethylene glycol-induced rats. MATERIALS AND METHODS: To evaluate anti-urolithiasis, variations of the main risk factors (citrate, phosphorous, calcium and PH) have been ...
متن کاملEffects of Temperature and Cocatalyst Concentration on the Number of Active Sites in a TiCl4/Mg(OEt)2 Catalyst for Ethylene Polymerization
The slurry polymerization of ethylene was studied by employing a (TiCl4/Mg(OEt)2/TEA) catalyst system in hexane. The effects of triethylaluminum concentration and temperature on polymer yield and polymer viscosity average molecular weight, Mv, were investigated. The maximum polymer yield was obtained at an Al/Ti molar ratio of 124. The highest yield and Mv were achieved at 60 °C. The concentrat...
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Objective: Urolithiasis remains a global problem. Despite the availability of numerous methods, no definite therapeutic agent has been yet introduced for the prevention or treatment of kidney stones. In this study, we evaluated the possible preventive effects of aqueous extract of Cichorium intybus L. (chicory) flowers on ethylene glycol-induced renal calculi in rats. Materials and Methods: A t...
متن کاملEffect of ethylene on quality of fresh fruits and vegetables
Ethylene is a naturally occurring plant growth substance that has numerous effects on the growth, development and storage life of many fruits, vegetables and ornamental crops at ml l concentrations. Harvested fruits and vegetables may be intentionally or unintentionally exposed to biologically active levels of ethylene and both endogenous and exogenous sources of ethylene contribute to its biol...
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تاریخ انتشار 2002