Armoracia lapathifolia Gilib.

2011 ◽  
Keyword(s):  
Armoracia Lapathifolia

Biochemical markers of morphogenesis in long term horseradish (Armoracia lapathifolia Gilib.) tissue culture

2009 ◽  
Vol 119 (2) ◽  
pp. 88-97 ◽  
Author(s):  
Biljana Balen ◽  
Dubravko Pavoković ◽  
Petra Peharec ◽  
Marijana Krsnik-Rasol
Keyword(s):  
Tissue Culture ◽  
Biochemical Markers ◽  
Armoracia Lapathifolia

BIOSYNTHESIS OF MUSTARD OIL GLUCOSIDES: I. ADMINISTRATION OF C14-LABELLED COMPOUNDS TO HORSERADISH, NASTURTIUM, AND WATERCRESS

1962 ◽  
Vol 40 (1) ◽  
pp. 1505-1514 ◽  
Author(s):  
E. W. Underhill ◽  
M. D. Chisholm ◽  
L. R. Wetter
Keyword(s):  
Allyl Isothiocyanate ◽  
The Other ◽  
Mustard Oil ◽  
Methyl Carbon ◽  
Nasturtium Officinale ◽  
Other Hand ◽  
Tropaeolum Majus ◽  
Armoracia Lapathifolia ◽  
Carboxyl Carbon

Biosynthetic investigations with C14-labelled compounds indicate that the aromatic isothiocyanate moieties of mustard oil glucosides obtained from garden nasturtium (Tropaeolum majus L.) and watercress (Nasturtium officinale R.Br.) are derived from phenylalanine. Similar investigations on sinigrin, the mustard oil glucoside isolated from horseradish (Armoracia lapathifolia Gilib.) demonstrate that glycine is incorporated into allyl isothiocyanate. The methyl carbon of acetate was readily incorporated into sinigrin and gluconasturtium and was found almost exclusively in the 'isothiocyanate carbon'; on the other hand the carboxyl carbon is a poor precursor of sinigrin.

BIOSYNTHESIS OF MUSTARD OIL GLUCOSIDES: VII. FORMATION OF SINIGRIN IN HORSERADISH FROM HOMOMETHIONINE-2-14C AND HOMOSERINE-2-14C

1966 ◽  
Vol 44 (12) ◽  
pp. 1625-1632 ◽  
Author(s):  
M. D. Chisholm ◽  
L. R. Wetter
Keyword(s):  
Amino Acids ◽  
Allyl Isothiocyanate ◽  
Valeric Acid ◽  
The Other ◽  
Mustard Oil ◽  
Armoracia Lapathifolia ◽  
Hydroxyvaleric Acid

Five 14C-labeled amino acids were administered to horseradish (Armoracia lapathifolia Gilib.) leaves. Three of the amino acids, DL-homoserine-2-14C, DL-methionine-2-14C, and DL-homomethionine-2-14C (2-amino-5-(methylthio)-valeric acid), were precursors of the aglycone (allyl isothiocyanate) of sinigrin. The other two, DL-allylglycine-2-14C (2-amino-4-pentenoic acid) and DL-2-amino-5-hydroxyvaleric acid-2-14C, were incorporated in insignificant amounts. The relationships of the three efficient precursors are discussed. The syntheses of four 14C-labeled amino acids used in this investigation are described.

Sources of sulfur in the thioglucosides of various higher plants

1968 ◽  
Vol 46 (8) ◽  
pp. 931-935 ◽  
Author(s):  
L. R. Wetter ◽  
M. D. Chisholm
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Higher Plants ◽  
Carbon Skeleton ◽  
The Other ◽  
Nasturtium Officinale ◽  
Tropaeolum Majus ◽  
Armoracia Lapathifolia

L-Methionine-35S and DL-cysteine-35S were good sources of sulfur for the biosynthesis of sinigrin in Armoracia lapathifolia Gilib. and were incorporated with approximately the same efficiency. Homomethionine-35S was a slightly poorer source of sulfur than methionine, while taurine-35S was a very poor source. When homomethionine, methionine, and cysteine were employed as sources of sulfur, the distribution of radioactivity between the two sulfur atoms in sinigrin was approximately 80% in the isothiocyanate moiety and 10–15% in the sulfate moiety. When taurine was employed, the distribution was reversed. 1-Thio-β-D-glucose (1-thioglucose) also was a poor source of sulfur for sinigrin. The carbon skeleton of 1-thioglucose was only slightly incorporated into this thioglucoside. The experiments indicated that 1-thioglucose was not a direct precursor of the 1-thioglucosyl residue of sinigrin.The administration of doubly labeled methionine-2-14C-35S clearly demonstrated that this amino acid was not incorporated intact into sinigrin. The carbon-2 and sulfur atoms were metabolized by two different routes.Preliminary studies related to sulfur incorporation into the thioglucosides of Nasturtium officinale R.Br., Tropaeolum majus L., and Reseda luteola L. indicated that there were some differences depending on the source of sulfur; DL-cysteine was a better source of sulfur than either methionine or 1-thioglucose. Tropaeolum majus L. appeared to utilize the sulfur of cysteine for the production of thioglucoside as efficiently as Armoracia lapathifolia Gilib.; however, the other two species utilized the sulfur from the amino acids very poorly.

Isoperoxidase in hairy roots and regenerated plants of horseradish (Armoracia lapathifolia)

Plant Science ◽  
1991 ◽  
Vol 75 (2) ◽  
pp. 195-201 ◽  
Author(s):  
Tsutomu Saitou ◽  
Hiroshi Kamada ◽  
Hiroshi Harada
Keyword(s):  
Hairy Roots ◽  
Regenerated Plants ◽  
Armoracia Lapathifolia

BIOSYNTHESIS OF MUSTARD OIL GLUCOSIDES: IV. THE ADMINISTRATION OF METHIONINE-C14 AND RELATED COMPOUNDS TO HORSERADISH

1964 ◽  
Vol 42 (7) ◽  
pp. 1033-1040 ◽  
Author(s):  
M. D. Chisholm ◽  
L. R. Wetter
Keyword(s):  
Degradation Products ◽  
Allyl Isothiocyanate ◽  
Chemical Degradation ◽  
Mustard Oil ◽  
Methyl Group ◽  
Armoracia Lapathifolia ◽  
Related Compounds

The administration of C14-labelled compounds to horseradish (Armoracia lapathifolia Gilib.) demonstrated that both methionine and acetate were efficiently incorporated into the aglycone (allyl isothiocyanate) of sinigrin. Chemical degradation of the aglycone showed that the methyl group of acetate appeared in the "isothiocyanate carbon" and that carbons 2, 3, and 4 of methionine were incorporated into carbons 2, 3, and 4 respectively of the aglycone with very little randomization. Homocysteine was the only other compound that was incorporated into the aglycone. Other degradation products of methionine did not appear to be incorporated into allyl isothiocyanate.

Biotransformation of Isoprenoids and Shikimic Acid Derivatives by a Vegetable Enzymatic System

2004 ◽  
Vol 59 (3-4) ◽  
pp. 201-204 ◽  
Author(s):  
Wanda Krystyna Mączka ◽  
Agnieszka Mironowicz
Keyword(s):  
Daucus Carota ◽  
Shikimic Acid ◽  
Methyl Esters ◽  
Reversible Reaction ◽  
Apium Graveolens ◽  
Enzymatic System ◽  
Aromatic Acids ◽  
Daucus Carota L ◽  
Enzymatic Systems ◽  
Armoracia Lapathifolia

In biotransformations carried out under similar conditions enzymatic systems from carrot (Daucus carota L.), celeriac (Apium graveolens L. var. rapaceum) and horse-radish (Armoracia lapathifolia Gilib.) hydrolyzed the ester bonds of acetates of phenols or alicyclic alcohols. Nevertheless, methyl esters of aromatic acids did not undergo hydrolysis. Alcohols were oxidized to ketones in a reversible reaction.

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