Bille Huynh (foamash5)

An enzyme has been isolated from chicory that functions as an invertase at low sucrose concentrations, but far more and extra catalyzes the synthesis of isokestose at higher concentrations. Using genetic engineering techniques, invertase (e.g. from yeast) in transgenic plants (e.g. tobacco) can be brought to expression in different cell compartments. In all circumstances this has the effect that the phloem is not loaded with sucrose and no sucrose can be transported from the leaves into the sinks. General, this leads to a severe impairment of the development of the transgenic plants. Invertase is an enzyme that is able to break down table sugar into its two elements, dextrose and fructose. <img src=";/> This is viewed as part of the defense against pathogens. <a href=";>buy invertase</a> impacted tissues are improved supplied with carbohydrates with which they can meet the elevated power requirements for the defense. There are <a href=";hl=es">;hl=es</a> between the plant invertase and plant and bacterial enzymes of the fructan metabolism. In <a href=";>click resources</a> , the enzyme is located in high concentrations in seedlings, fruits, storage roots and meristems. There are also indications of a cytoplasmic invertase in some plants. Microorganisms also synthesize and excrete invertase. Each pathogenic bacteria and fungi as well as the symbiotic fungi of the mycorrhiza use the host sucrose as a carbon and energy source. On the other hand, pathogen attack also induces the synthesis of an apoplastic invertase by the plant. According to existing knowledge, the apoplastic invertase plays an vital function in the phloem discharge in consumption or storage tissues. It splits the disaccharide sucrose transported in the phloem of the vascular bundles into the hexoses that can be taken up by the cells via cotransport with protons. By keeping a steep sucrose gradient involving the phloem and sink, the invertase is an crucial element in determining the sink capacity of a tissue or organ. However, some plants can also take up sucrose directly into the cells by means of the plasma membrane. The exact function of vacuolar invertase is not recognized. <iframe width="500" height="280" src="; frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>But it likely has a function in the metabolism of the intravacuolar saccharose.