Results 151 to 160 of about 38,860 (198)

Steroidal Glycoside From Allium porrum

Chemistry of Natural Compounds, 2018
New steroidal glycoside 1 was isolated by fractionating total extracted substances from Allium porrum. Its structure was determined as (25R)-5_-spirostane-3β,6β-diol-2,12-dione 3-O-{β-D-glucopyranosyl-(1→3)-β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-Dgalactopyranoside} using chemical transformations, physical ...
L N Gvazava, A V Skhirtladze
exaly   +2 more sources

The Sapogenins of Allium porrum L.

Journal of Agricultural and Food Chemistry, 1998
A chemical study of the sapogenin content has been conducted on leek, A. porrum L., sown and collected at different times. As a result of this investigation, a variability in the sapogenin composition depending from the climate was observed. In addition, a novel sapogenin named porrigenin C (1a), and its 25S epimer (1b) have been isolated, together ...
FATTORUSSO, ERNESTO, LANZOTTI, VIRGINIA, S. MAGNO, TAGLIALATELA SCAFATI, ORAZIO   +3 more
openaire   +2 more sources

Allium porrum Saponin 3

2006
exaly   +2 more sources

Chitinase in roots of mycorrhizal Allium porrum: regulation and localization

Planta, 1989
Chitinase (EC 3.2.1.14) activity was measured in roots of Allium prorrum L. (leek) during development of a vesicular-arbuscular mycorrhizal symbiosis with Glomus versiforme (Karst.) Berch. During the early stages of infection, between 10 and 20 d after inoculation, the specific activity of chitinase was higher in mycorrhizal roots than in the ...
Spanu P, Boller T, Ludwig A, Wiemken A, Faccio A, Bonfante-Fasolo P   +5 more
openaire   +3 more sources

Accumulation of apocarotenoids in mycorrhizal roots of leek (Allium porrum)

Phytochemistry, 2008
Colonization of the roots of leek (Allium porrum L.) by the arbuscular mycorrhizal fungus Glomus intraradices induced the formation of apocarotenoids, whose accumulation has been studied over a period of 25 weeks. Whereas the increase in the levels of the dominating cyclohexenone derivatives resembles the enhancement of root length colonization, the ...
Willibald, Schliemann, Barbara, Kolbe, Jürgen, Schmidt, Manfred, Nimtz, Victor, Wray   +4 more
openaire   +2 more sources

An ultrastructural study of plant cell (Allium porrum) centromeres

Journal of Ultrastructure Research, 1980
A number of reports have appeared in recent years on the presence of fibrillar nuclear formations in plant cells. Owing to their intimate association with the chromosomes as well as to their ultracytochemical characteristics, these spherical structures have been assumed to represent centromeres.
J G, Lafontaine, B T, Luck
openaire   +2 more sources

AFLP marking of the genotypes of leek (Allium porrum) varieties

Russian Journal of Genetics, 2011
The results of the AFLP analysis of 16 leek (Allium porrum) accessions and related species of the sections of the genus Allium are presented. Restriction enzymes and primer combinations for the identification of the genotypes of the A. porrum accessions were chosen.
M A, Filiushin, O A, Kholda, E Z, Kochieva, N N, Ryzhova   +3 more
openaire   +2 more sources

Agrobacterium tumefaciens-mediated transformation of leek (Allium porrum) and garlic (Allium sativum)

Plant Cell Reports, 2005
Transgenic leek (Allium porrum) and garlic (Allium sativum) plants have been recovered by the selective culturing of immature leek and garlic embryos via Agrobacterium-mediated transformation using a method similar to that described by Eady et al. (Plant Cell Rep 19:376-381, 2000) for onion transformation.
Colin, Eady, Sheree, Davis, Andrew, Catanach, Fernand, Kenel, Sarah, Hunger   +4 more
openaire   +2 more sources

Cytotoxic Saponins from Bulbs of Allium porrum L.

Journal of Agricultural and Food Chemistry, 2000
An extensive phytochemical analysis of the saponin content has been undertaken on leek, Allium porrum L., sown and collected at different seasons. As a result of this investigation, eight saponins (1-8) have been isolated, four of them (5-8) being novel compounds.
FATTORUSSO, ERNESTO, LANZOTTI, VIRGINIA, TAGLIALATELA SCAFATI, ORAZIO, M. DI ROSA, IANARO, ANGELA   +4 more
openaire   +3 more sources

Spirostanol saponins of Allium porrum L.

Phytochemistry, 1999
An investigation of the extracts from bulbs of Allium porrum L. has led to the isolation of four spirostanol saponins. Two of them are new compounds and have been identified as: (25R)-5 alpha-spirostan-3 beta, 6 beta-diol 3-O-{O-beta-D-glucopyranosyl-(1-->2)-O-[beta-D-xylopyranosyl-(1-->3)]-O- beta -D-glucopyranosyl-(1-->4)-beta-D-galactopyranoside} (3)
CAROTENUTO, ALFONSO, FATTORUSSO, ERNESTO, LANZOTTI, VIRGINIA, S. Magno   +3 more
openaire   +2 more sources