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How might pine rosin acids help protect a tree after it is wounded?
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Isoprenoid
Camphor, an isoprenoid compound classified as a terpenoid ketone, is used in incense and certain medicinal compounds. It is a natural substance obtained from the camphor laurel (Cinnamomum camphora), a species of evergreen.
Pine rosin acids, which include diterpene carboxylic acids such as abietic acid, serve as effective wound-sealing agents for trees in the pine family.12
When a tree is wounded, it produces an oleoresināa natural fluid exudate. As the volatile components of this fluid evaporate, they leave behind a nonvolatile residue known as rosin. These rosin acids help protect the tree by hardening over the injury, creating a physical barrier that seals the wound. This process mimics the historical use of rosin for caulking ships, where it was utilized to create watertight seals. By sealing the damaged area, the tree can better protect itself from external stressors and potential infections.3214