期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 40, 期 3, 页码 231-234出版社
GAUTHIER-VILLARS/EDITIONS ELSEVIER
DOI: 10.1016/S0981-9428(02)01369-4
关键词
Catharanthus roseus; 2,3-dihydroxybenzoic acid biosynthesis; [1-C-13]glucose; isochorismate; nuclear magnetic resonance
To study the intermediacy of isochorismate in the biosynthesis of 2,3-dihydroxybenzoic acid (2,3-DHBA) in Catharanthus roseus cell cultures, an incorporation study using [1-C-13]glucose was carried out. Based on a significantly different enrichment at the positions of C-2 and C-6 in 2,3-DHBA, and low incorporation at C-7, it is concluded that. indeed isochorismate is an intermediate. In the case of phenylalanine as an intermediate, a symmetrical partitioning of the label between C-2 and C-6 would occur, and C-7 would be strongly labeled. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
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