Search results for "Hydrocotyle"
showing 5 items of 5 documents
Light Conditions Affect NaCl-Induced Physiological Responses in a Clonal Plant Species Hydrocotyle vulgaris
2020
Abstract In order to understand if differences in light conditions can affect responses of a clonal plant species to increased soil salinity, the long-term effect of two substrate concentrations of NaCl on leaf growth, clonal plasticity and oxidative enzyme (peroxidase and polyphenol oxidase) activity in Hydrocotyle vulgaris L. plants grown at low, moderate and high light conditions was studied. H. vulgaris appeared to be a shade-tolerant species, since both leaf blade and petiole growth was inhibited at low light intensity. At low light intensity, H. vulgaris plants represented characteristics of halophytes with significant stimulation of leaf blade and petiole growth by NaCl, especially a…
Physiological Performance of a Coastal Marsh Plant Hydrocotyle vulgaris in Natural Conditions in Relation to Mineral Nutrition and Mycorrhizal Symbio…
2020
Abstract Fluctuating soil salinity and competition for light are the main factors affecting plant distribution and performance in coastal salt marshes. The aim of the present study was to assess plant performance by means of non-destructive instrumental methods in a highly heterogeneous natural habitat. More specifically, environmental factors affecting growth and physiological performance of a clonal plant Hydrocotyle vulgaris L. were investigated. Changes in soil salinity, soil mineral characteristics, leaf nutrient concentrations, morphological parameters, chlorophyll fluorescence, and mycorrhizal symbiosis were analysed in different experimental plots of naturally growing H. vulgaris pl…
Two New Oleanane-type Saponins from Hydrocotyle multifida
2018
A phytochemical study of a Venezuelan species Hydrocotyle multifida led to the isolation of five oleanane-type glycosides: two previously undescribed and three known ones. Their structures were established by 2D NMR spectroscopic techniques and mass spectrometry as 3- O-β-D-galactopyranosyl-(1→2)-[α-L-arabinopyranosyl-(1→3)]-β-D-glucuronopyranosyloleanolic acid and 3- O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-glucuronopyrano-syloleanolic acid. These results represent a significative contribution to the chemotaxonomy of the Hydrocotyle genus.
Triterpenoid saponins from Hydrocotyle bonariensis Lam
2011
Abstract Phytochemical investigation of the under-ground parts of Hydrocotyle bonariensis led to the isolation of five oleanane-type triterpenoid saponins, 3- O -{β- d -glucopyranosyl-(1 → 2)-[α- l -arabinopyranosyl-(1 → 3)]-β- d -glucuronopyranosyl}-21- O -(2-methylbutyroyl)-22- O -acetyl-R 1 -barrigenol, 3- O -{β- d -glucopyranosyl-(1 → 2)-[α- l -arabinopyranosyl-(1 → 3)]-β- d -glucuronopyranosyl}-21- O -(2-methylbutyroyl)-28- O -acetyl-R 1 -barrigenol, 3- O -{β- d -glucopyranosyl-(1 → 2)-[α- l -arabinopyranosyl-(1 → 3)]-β- d -glucuronopyranosyl}-21- O -acetyl-R 1 -barrigenol, 3- O -{β- d -glucopyranosyl-(1 → 2)-[α- l -arabinopyranosyl-(1 → 3)]-β- d -glucuronopyranosyl}-R 1 -barrigenol, a…
New Triterpenoid and Ergostane Glycosides from the Leaves of Hydrocotyle umbellata L.
2011
Two new triterpenoid glycosides, together with two new ergostane glycosides, umbellatosides A–D (1–4, resp.), have been isolated from the leaves of Hydrocotyle umbellata L. Their structures were established by 2D-NMR spectroscopic techniques (1H,1H-COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectrometry as 3β,22β-dihydroxy-3-O-[α-L-rhamnopyranosyl-(12)-β-D-glucuronopyranosyl]olean-12-en-28-oic acid 28-O-β-D-glucopyranosyl ester (1), 3-O-[α-L-rhamnopyranosyl-(12)-β-D-glucuronopyranosyl]oleanolic acid 28-O-β-D-glucopyranosyl ester (2), (3β,11α,26)-ergosta-5,24(28)-diene-3,11,26-triol 3-O-(β-D-glucopyranosyl)-11-O-(α-L-rhamnopyranosyl)-26-O-β-D-glucopyranoside (3), and (3β,11α,21,26)-ergosta…