Oxidative damage can result from a wide range of biotic, abiotic, and xenobiotic stresses.
In contrast, relatively little is known about the adaptive responses of the ice plant to oxidative stress. The same environmental stress conditions that result in CAM induction can also bring about photoinhibition and photooxidation. The availability of gene specific probes will permit a detailed examination of the expression patterns of distinct SOD isoforms. Such information may lead to important insights into the possible roles of distinct cytosolic SOD isozymes in different tissues or in response to various environmental stresses. One clone, ATP-7, contained a 0.8 kbp insert.