Читать книгу Nitric Oxide in Plants - Группа авторов - Страница 33

Many studies have stated that NO has a presence and role in plant growth, development, and defense responses. It is widely recognized that NO is a second messenger and key regulator in plants, and at low concentrations, it acts as a signal to induce or stabilize the expression of many antioxidative enzymes such as SOD, CAT, etc. It also reacts with ROS, acting as a chain breaker, and exhibits antioxidant properties. It also reacts with lipid alkoxyl and peroxyl radicals and stops the proliferation of radical-mediated oxidation of lipids. Thus, NO helps plants to survive under stressful conditions, but its role is mainly concentration dependent.