+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Cyano glucoside biosynthesis in white clover trifolium repens

Cyano glucoside biosynthesis in white clover trifolium repens

Phytochemistry 15(5): 697-701

L-valine-(U[uniformly labeled]-14C), isobutyraldoxime-(U-14C) and 2-hydroxyisobutyraldoxime-(1,3-14C) were fed to white clover shoots which contained or lacked cyanoglucoside. Plants which were unable to synthesize linamarin from these precursors lacked the ability to glucosylate 2-hydroxyisobutyronitrile. When L-valine-(U-14C) was fed to cyanoglucoside-producing plants in the presence of cold isobutyraldoxime, radioactivity could be trapped in this compound. No radioactivity was trapped in isobutyraldoxime fed to non-cyanoglucoside-producing shoots demonstrating that this phenotype also lacks the ability to convert valine into the aldoxime. The non-cyanoglucoside-producing plants apparently have at least 2 steps in the biosynthesis of linamarin missing. Differences between the linamarin biosynthetic enzymes of white clover and flax were demonstrated using the inhibitor O-methylthreonine and by the failure of cyanoglucoside-producing white clover shoots to synthesize linamarin when fed 2-hydroxyisobutyraldoxime.

(PDF emailed within 1 workday: $29.90)

Accession: 005077158

Download citation: RISBibTeXText

Related references

Genetics of Cyano-genesis in White Clover (Trifolium repens). J. Genet, 38: 357-365, 1939

Cyanogenesis In white clover (Trifolium repens L.). V. The inheritance of cyano-genesis. N.Z. J. Sci. Tech, 23: 178b,, 1942

Mycorrhiza of cultivated plants of the Papilionaceae family. II. Red clover (Trifolium pratense), Swedish clover (Trifolium hybridum) and white clover (Trifolium repens). Polish journal of soil science: ublished 1970), 2 (2) 137-143, 1969

Cyanogenesis in white clover (Trifolium repens L.) 6. Experiments with highglucoside and glucoside-free strains. N. Z. J. Sci. Technol. [A, 1952

A genetic model for the Ac locus which controls cyanogenic glucoside production in white clover (Trifolium repens L.). Heredity 50(2): 206-207, 1983

Identification of white clover (Trifolium repens L.), Alsike clever (Trifolium hybridum L.) and red clover (Trifolium pratense L.) by the fluorescence method. Biuletyn Instytutu Hodowli i Aklimatyzacji Roslin: 55) 125-135, 1984

Variation in architectural and clonal growth traits within seed population of white clover (Trifolium repens L.) in a Trifolium repens-Zoysia japonica sward. Grassland Science 42(3): 202-210, 1996

Effect of competition by white clover trifolium repens on the seed production characteristics of subterranean clover trifolium subterraneum. Australian Journal of Agricultural Research 30(4): 597-608, 1979

Boron deficiency and response in white clover trifolium repens and red clover trifolium pratense and lucerne medicago sativa. New Zealand Journal of Agricultural Research 26(2): 197-204, 1983

Interspecific hybridization of tetraploid kura clover trifolium ambiguum m. bieb. and white clover trifolium repens l. using ovule culture. Grassland Science 35(3): 180-185, 1989

Morphological characteristics of hybrids between white clover, Trifolium repens L., and Caucasian clover, Trifolium ambiguum M. Bieb. Plant Breeding 117(5): 494-496, 1998

Competition between white clover trifolium repens l. and subterranean clover trifolium subterraneum l. in binary mixtures in the field. Grass and Forage Science 45(4): 373-382, 1990

Transformation of ovary into leaves in tetraploid white clover (Trifolium repens L.) and in Swedish clover Trifolium hybridum L. Bull. Acad. polon. Sci, 6: 103-08, 1958

Nitrogen fixation in hybrids of white clover (Trifolium repens L.) and Caucasian clover (Trifolium ambiguum M. Bieb). Journal of Agronomy and Crop Science 185(4): 241-247, 2000

Estimation of digestibility of legume forages by means of morphological parameters White clover, Trifolium repens, red clover, Trifolium pratense, alfalfa. Proceedings of the XVI International Grassland Congress: held at Lexington Kentucky USA June 15-24-1981 edited by J Allan Smith and Virgil W Hays: 830, 1983