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A resin is a solid or highly viscous liquid that can be converted into a polymer. [1] Resins may be biological or synthetic in origin, but are typically harvested from plants. Resins are mixtures of organic compounds, predominantly terpenes. Well-known resins include amber, hashish, frankincense, myrrh and the animal-derived resin, shellac.
See insectivorous plants. Resin ducts are canals lined with secretory cells that release resins into the canal. Resin ducts are common in gymnosperms and occur in various tissues of roots, stems, leaves, and reproductive structures. Gum ducts are similar to resin ducts and may contain resins, oils, and gums.
Resin canal characteristics (such as number, size and density) in pine species can determine its resistance to pests. In one study, biologists were able to categorize 84% of lodgepole pine, and 92% of limber pines, as being either susceptible or resistant to bark beetles based only on their resin canals and growth rate over 20 years. [3]
Balsam is a solution of plant-specific resins in plant-specific solvents (essential oils).Such resins can include resin acids, esters, or alcohols.The exudate is a mobile to highly viscous liquid often containing crystallized resin particles.
Rosin (/ ˈ r ɒ z ɪ n /), also known as colophony or Greek pitch (Latin: pix graeca), is a resinous material obtained from pine trees and other plants, mostly conifers. The primary components of rosin are diterpenoids, i.e., C 20 carboxylic acids. Rosin consists mainly of resin acids, especially abietic acid. [1]
Kino flows from a wound in the trunk of a marri (Corymbia calophylla). Gum is a sap or other resinous material associated with certain species of the plant kingdom.This material is often polysaccharide-based and is most frequently associated with woody plants, particularly under the bark or as a seed coating.
In plants, a gland is defined functionally as a plant structure which secretes one or more products. This may be located on or near the plant surface and secrete externally, or be internal to the plant and secrete into a canal or reservoir. Examples include glandular hairs, nectaries, hydathodes, and the resin canals in Pinus. [1]
Juglone is an example of such a molecule inhibiting the growth of other plant species around walnut trees. [citation needed] The aquatic vascular plant Myriophyllum spicatum produces ellagic, gallic and pyrogallic acids and (+)-catechin, allelopathic phenolic compounds inhibiting the growth of blue-green alga Microcystis aeruginosa. [59]
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