CytokininOxidasenDehydrogenasen

Cytokinin Oxidase is a type of enzyme involved in the regulation of cytokinin levels in plants. Cytokinin is a class of plant growth substances, also known as phytohormones, that play a crucial role in plant growth and development. Cytokinin oxidase is a key enzyme in the catabolism of cytokinin, breaking down the hormone into less active forms.

The enzyme cytokinin oxidase was first identified in the 1970s, and since then, its role in cytokinin regulation has been extensively studied. Cytokinin oxidase is a copper-containing enzyme that has been found in the apoplast, the area outside plant cells, and in the cell walls of various plant tissues. The enzyme's activity is influenced by factors such as pH, oxygen levels, and temperature.

Elevated levels of cytokinin have been implicated in various plant diseases, including Tobacco Mosaic Virus (TMV) and Ri T-DNA-induced tumor formation in plants. Cytokinin oxidase plays a crucial role in regulating cytokinin levels to prevent excessive cytokinin activity. The enzyme's activity can also be influenced by various environmental factors, including light, temperature, and water stress.

Recent research has focused on the cloning and functional analysis of the cytokinin oxidase gene in plants. Understanding the regulation of cytokinin levels and the role of cytokinin oxidase in this process is essential for improving plant productivity and disease resistance. Cytokinin oxidase is an important enzyme in the complex regulatory network of plant hormones and is a key target for research in plant molecular biology.