Decaffeination this trait could be bred into other coffee plants by crossing them with "C. charrieriana", or an equivalent effect could be achieved by knocking out the gene for caffeine synthase in normal coffee plants. Tea may also be decaffeinated, usually by using processes analogous to the direct method or the CO process, as described above. The process of oxidizing tea leaves to create black tea ("red" in Chinese tea culture) or oolong tea leaves from green leaves does not affect the amount of caffeine in the tea, though tea-plant subspecies (i.e., "Camellia sinensis sinensis" vs. "Camellia sinensis assamica") may differ
Camellia number of "Lepidoptera" species; see List of Lepidoptera that feed on Camellia. Leaves of the Japanese camellia ("C. japonica") are susceptible to the fungal parasite "Mycelia sterile" (see below for the significance). "Camellia sinensis", the tea plant, is of major commercial importance because tea is made from its leaves. The species "C. sinensis" is the product of many generations of selective breeding in order to bring out qualities considered desirable for tea. However, many other camellias can be used to produce a similar beverage. For example, in some parts of Japan, tea made from "C. sasanqua" leaves is popular. Tea