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Tree of discord |
Tree of discordI recently visited a research establishment where trees and other plants are growing in tropical or subtropical conditions. One exhibit that particularly interested me was a grove of neem trees from the Indian subcontinent. This tree is of interest because it has recently been the centre of legal disputes and exemplifies one of the less attractive aspects of our craze for protecting the financial interests of huge transnational corporations. The neem (Melia azadirachta, formerly Azadirachta indica) is a member of the mahogany family, indigenous to the subtropical East. It occurs naturally in India and China, and has been cultivated in Hawaii and the southern United States, and also in southern France and Spain. Its vernacular names include margosa, pride of China, Indian lilac and, according to Avicenna, Persian lilac. In Bengal the neem tree grows to a height of 10-20m and is elegant, with a smooth bark, pinnate leaves, and carrying bunches of perfumed lilac-coloured flowers and hard nutty fruits. Neem has been used in India for many agricultural and medicinal purposes, for fuel and cosmetics. Its bark is very bitter and its outer layers astringent. Constituents are margosin, a glyceride, also called nimbosin, and tannins. The oil from the fruit is used for illumination. Oil from the bark is anthelmintic and emetic, with antifungal and insecticidal properties, and is applied externally for rheumatism. The hard fruits have been used to make rosary beads. The neem tree has recently been the centre of a controversy over patent rights regarding some of its constituents that have industrial economic value. The European Patent Office has just revoked a patent that was originally granted in 1994 to the US Department of Agriculture and a multinational business corporation for the exploitation of antifungal compounds. Environmental groups strenuously oppose such a patent, which was regarded as an unwarranted intrusion on interests of the indigenous community. Neem has been used for traditional purposes in the Indian subcontinent in agriculture, domestic economy and herbal medicine for centuries, and the application for a patent on the ground that an agribusiness firm had produced a new fungicide from neem seed oil provoked demonstrations locally. |