A disaccharide sugar (342 D) found widely in invertebrates, bacteria, algae, plants and fungi, formed by the dimerisation of glucose.
An oligosaccharide from some fungi
Trehalose, also known as mycose, is an alpha-linked (disaccharide) sugar found extensively but not abundantly in nature. It can be synthesised by fungi, plants and invertebrate animals. It is implicated in anhydrobiosis—the ability of plants and animals to withstand prolonged periods of desiccation.