IDENTIFICATION OF A NEW BRASSINOSTEROID, CATHASTERONE, IN CULTURED-CELLS OF CATHARANTHUS-ROSEUS AS A BIOSYNTHETIC PRECURSOR OF TEASTERONE

被引：69

作者：

FUJIOKA, S

INOUE, T

TAKATSUTO, S

YANAGISAWA, T

YOKOTA, T

SAKURAI, A

机构：

[1] UTSUNOMIYA UNIV, DEPT AGR CHEM, UTSUNOMIYA 320, TOCHIGI, JAPAN

[2] JOETSU UNIV EDUC, DEPT CHEM, JOETSU, NIIGATA 943, JAPAN

[3] TEIKYO UNIV, DEPT BIOSCI, UTSUNOMIYA, TOCHIGI 320, JAPAN

来源：

BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY | 1995年 / 59卷 / 08期

关键词：

D O I：

10.1271/bbb.59.1543

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The occurrence of a new brassinosteroid of (22S,24R)-3 beta,22-dihydroxy-5 alpha-ergostan-6-one, named cathasterone, was demonstrated by a GC-MS analysis in cultured cells of Catharanthus roseus, Its endogenous level was in the range of 2-4ng/g fw, similar to those of brassinolide and castasterone, A feeding experiment with a deuterium-labeled substrate revealed that cathasterone was converted to teasterone and typhasterol, This is the first report of the natural occurrence of cathasterone as a brassinosteroid being the biosynthetic precursor of teasterone.

引用

页码：1543 / 1547

页数：5

共 9 条

[1] BIOSYNTHESIS OF BRASSINOSTEROIDS IN SEEDLINGS OF CATHARANTHUS-ROSEUS, NICOTIANA-TABACUM, AND ORYZA-SATIVA [J].