Recombinant microorganisms, plants, and plant cells are disclosed that have been engineered to express novel recombinant genes encoding steviol biosynthetic enzymes and UDP-glycosyltransferases (UGTs). Such microorganisms, plants, or plant cells can produce steviol or steviol glycosides, e.g., rubusoside or Rebaudioside A, which can be used as natural sweeteners in food products and dietary supplements.

The invention disclosed herein relates generally to the field of recombinant production of a steviol glycoside, to the field of bioconversion of steviol into a steviol glycoside and to the field of bioconversion of a steviol glycoside into a further steviol glycoside. Particularly, the invention provides a process for recombinant production of a steviol glycoside, a process of bioconversion of steviol into a steviol glycoside, a process for bioconversion of a steviol glycoside into a further steviol glycoside and a composition comprising a steviol glycoside. More particularly, the invention relates to a microorganism that has a deficiency of a serine/threonine protein kinase and comprises a polynucleotide encoding a polypeptide having uridine diphosphate-dependent glucosyltransferase (UGT) activity.

Recombinant microorganisms, plants, and plant cells are disclosed that have been engineered to express novel recombinant genes encoding steviol biosynthetic enzymes and UDP-glycosyltransferases (UGTs). Such microorganisms, plants, or plant cells can produce steviol or steviol glycosides, e.g., rubusoside or Rebaudioside A, which can be used as natural sweeteners in food products and dietary supplements.

The present disclosure relates to methods for producing oxygenated terpenoids, and preparation of compositions and formulations thereof. Polynucleotides, derivative enzymes, and host cells for use in such methods are also provided.