Natural Components of Nectar
Although its main ingredient is natural sugar (i.e., sucrose (table sugar), glucose, and fructose), nectar is a brew of many chemicals. For example, the Nicotiana attenuata, a tobacco plant native to the US state of Utah, uses several volatile aromas to attract pollinating birds and moths. The strongest such aroma is benzyl acetone, but the plant also adds bitter nicotine, which is less aromatic and therefore may not be detected by the bird until after taking a drink. Researchers speculate the purpose of this addition is to drive the bird away after only a sip, motivating it to visit other plants to fill its hunger, and therefore maximizing the pollination efficiency gained by the plant for a minimum nectar output. Neurotoxins such as aesculin are present in some nectars such as that of the California Buckeye. All twenty of the normal amino acids found in protein have been identified in various nectars, with alanine, arginine, serine, proline, glycine, isoleucine, threonine, and valine being the most prevalent.
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Famous quotes containing the words natural, components and/or nectar:
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—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“Hence, a generative grammar must be a system of rules that can iterate to generate an indefinitely large number of structures. This system of rules can be analyzed into the three major components of a generative grammar: the syntactic, phonological, and semantic components.”
—Noam Chomsky (b. 1928)
“The poet’s body even is not fed like other men’s, but he sometimes tastes the genuine nectar and ambrosia of the gods, and lives a divine life. By the healthful and invigorating thrills of inspiration his life is preserved to a serene old age.”
—Henry David Thoreau (1817–1862)