Polygonum

About: Polygonum is a research topic. Over the lifetime, 1230 publications have been published within this topic receiving 12765 citations.

The Structure of Polygodial: A New Sesquiterpene Dialdehyde from Polygonum hydropiper L

Abstract: A pungent substance, polygodial, isolated from Polygonum hydropiper L. is shown to be drim-7-en-11,12-dial (I), a new dialdehyde structurally related to sesquiterpene lactones from Drimys species.

Germination of Ten Shoreline Plants in Relation to Seed Size, Soil Particle Size and Water Level: An Experimental Study

Abstract: Acorus calamus, Alisma plantago-aquatica, Bidens cernua, B. vulgata, Cyperus aristatus, Lythrum salicaria, Polygonum punctatum, Sagittaria latifolia, Scirpus americanus, Typha angustifolia

Absorption, translocation and metabolism of 14C -glyphosate in several weed species.

Abstract: Summary: The pattern and extent of 14C-glyphosate [N-(phosphonomethyl)glycine] translocation from the treated leaf and metabolism of 14C-glyphosate were studied in field bindweed (Convolvulus arvensis L.), hedge bindweed (Convolvulus sepium L.). Canada thistle [Cirsium arvense (L.) Scop.] tall morning glory [lpomoea purpurea (L.) Roth.] and wild buckwheat (Polygonum convolvulus L.). 14C was translocated throughout the plants within 3 days with accumulation in the meristematic tips of the roots and shoots evident. Cross and longitudinal sections of stems and roots showed that the 14C was localized in the phloem. Field bindweed translocated 3–5% of the applied 14C from the treated leaf, hedge bindweed 21.6%, Canada thistle 7.8%, tall morningglory 6.5%, and wild buckwheat 5%. Field bindweed, Canada thistle, and tall morningglory metabolized the parent glyphosate to aminomethylphosphonic acid to a limited extent. This metabolite made up less than 15% of the total 14C. Of the total 14C applied to excised leaves, 50% had disappeared within 25 days.

Effects of stilbene components of roots of Polygonum ssp. on liver injury in peroxidized oil-fed rats.

Abstract: The effects of POLYGONUM CUSPIDATUM S IEB. et Z UCC. (“Kojo-kon” or “Itadori-kon” in Japanese) of POLYGONUM MULTIFLORUM (“Kashuwu” or “Tsurudo-kudami-kon” in Japanese) roots and their stilbene components (piceid and 2,3,5,4′-tetrahydroxy stilbene-2-O-D-glucoside) on liver injury caused in rats by feeding peroxidized oil were investigated. Piceid and 2,3,5,4′-tetrahydroxy stilbene-2-O-D-glucoside were found to partly inhibit the deposition of lipid peroxides in the liver of those rats. The stilbene glucosides reduced the elevation of GOT and GPT levels in the serum of the rats. Furthermore, resveratrol, piceid and 2,3,5,4′-tetrahydroxy stilbene-2-O-D-glucoside were found to inhibit lipid peroxidation induced by ADP and NADPH in rat liver microsomes.