Trehalose (D-Glc-a,a-1,1-D-Glc, 1), which can accumulate to very high levels in a variety of bacteria, fungi, insects and plants,9 is used in many different biological roles, including in energy storage,10 in abiotic stress responses11 and for osmoregulation.12 Trehalose metabolism can be by hydrolysis, but it is often by phosphorolysis