Is Isoprene Emitted by Plants Synthesized via the Novel Isopentenyl Pyrophosphate Pathway?

Author:

Zeidler Johannes G.1,Lichtenthaler Hartmut K.1,May H. Ulrich2,Lichtenthaler Frieder W.2

Affiliation:

1. 1Botanical Institute II, University of Karlsruhe, D-76128 Karlsruhe, Bundesrepublik Deutschland

2. 2Institute of Organic Chemistry, Technische Hochschule Darmstadt, D-64287 Darmstadt, Bundesrepublik Deutschland

Abstract

Abstract The incorporation of deuterium labeled 1-deoxy-ᴅ-xylulose into isoprene, emitted by three higher plants upon illumination, was analysed by headspace GC-MS. A high extent of incorporation into isoprene was found, indicating that isoprene is synthesized in higher plants via the novel isopentenyl pyrophosphate pathway, of which 1-deoxy-ᴅ-xylulose-5-phosphate is an intermediate. A new chemical synthesis of methyl [ 1-2H1]-1-deoxy-α/β-ᴅ-xyluloside from ᴅ-xylulose is presented.

Publisher

Walter de Gruyter GmbH

Subject

General Biochemistry, Genetics and Molecular Biology

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