Early Biosynthetic Pathway to Abscisic Acid in Cercospora cruenta

Tipo de material: Texto

TextoSeries ; BioScience, Biotechnology and BioChemistry, 64, p.2075-2082, 2000Trabajos contenidos:

Yamamoto, H
Inomata, M
Tsuchiya, S
Nakamura, M
Uchiyama, T
Oritani, T

Recursos en línea:

Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx

Resumen: A new biosynthetic intermediate of ABA, (2Z,4E)-?-ionylideneacetaldehyde, was isolated from young mycelia of Cercospora cruenta. Under an 18O2 atmosphere, an oxygen atom of this endogenous aldehyde was exclusively labeled. Similarly, three 18O atoms were incorporated into the ABA molecule recovered after prolonged incubation; selectively labeled were one of the carboxyl oxygen atoms and the two on the ring portion of ABA. A feeding experiment with [1-13C]glucose proved the exclusive operation of the mevalonate pathway for the formation of both ABA and ß-carotene. These results suggest that (2Z,4E)-?-ionylideneacetaldehyde can be a key ABA biosynthetic intermediate formed by the oxidative cleavage of a carotenoid precursor. Key words: abscisic acid; (2Z,4E)-?-ionylideneacetaldehyde; carotenoid pathway; mevalonate pathway; Cercospora cruenta

Tags from this library: No tags from this library for this title. Log in to add tags.

Average rating: 0.0 (0 votes)

Holdings
Item type	Current library	Collection	Call number	Status	Date due	Barcode
Documentos solicitados	CICY Documento préstamo interbibliotecario	Ref1	B-6469 (Browse shelf(Opens below))	Available

Browsing CICY shelves, Shelving location: Documento préstamo interbibliotecario, Collection: Ref1 Close shelf browser (Hides shelf browser)

Previous	No cover image available	No cover image available	No cover image available	No cover image available	No cover image available	No cover image available	No cover image available	Next
Previous	B-6466 A Large-Insert (130 kbp)Bacterial Artificial Chromosome Library of the Rice Blast FungusMagnaporthe grisea:Genome Analysis, Contig Assembly, and Gene Cloning	B-6467 A new aspect of genetic diversity of Indonesian oil palm (Elaeis guineensis Jacq.)revealed by isoenzyme and AFLP markers and its consequences for breeding	B-6468 Analytical Bayesian Approach for Assigning Individuals to Populations	B-6469 Early Biosynthetic Pathway to Abscisic Acid in Cercospora cruenta	B-647 La reforma universitaria de Córdoba	B-6470 Biosynthesis of Abscisic Acid by the Non-mevalonate Pathway in Plants, and by the Mevalonate Pathway in Fungi	B-6471 Flavones are inhibitors of HIV-1 proteinase.	Next

A new biosynthetic intermediate of ABA, (2Z,4E)-?-ionylideneacetaldehyde, was isolated from young mycelia of Cercospora cruenta. Under an 18O2 atmosphere, an oxygen atom of this endogenous aldehyde was exclusively labeled. Similarly, three 18O atoms were incorporated into the ABA molecule recovered after prolonged incubation; selectively labeled were one of the carboxyl oxygen atoms and the two on the ring portion of ABA. A feeding experiment with [1-13C]glucose proved the exclusive operation of the mevalonate pathway for the formation of both ABA and ß-carotene. These results suggest that (2Z,4E)-?-ionylideneacetaldehyde can be a key ABA biosynthetic intermediate formed by the oxidative cleavage of a carotenoid precursor. Key words: abscisic acid; (2Z,4E)-?-ionylideneacetaldehyde; carotenoid pathway; mevalonate pathway; Cercospora cruenta

There are no comments on this title.

to post a comment.