Angiosperms - Chemistry
Research News and Information

Sunday, November 22, 2009

Identification of Carboniferous (320 million years old) class Ic amber.

30 Sep 2009 The presence of amber, the fossil form of the resins produced by many types of higher plants, has been reported from many localities in Mesozoic and Cenozoic rocks. We have found Class I (polylabdanoid) amber in Carboniferous sediments dating to ... Read more...

Design and evaluation of new analogs of the sweet protein brazzein.

18 Aug 2009 We have previously modeled the interaction of the sweet protein brazzein with the extracellular domains of the sweet taste receptor. Here, we describe the application of that model to the design of 12 new highly potent analogs of brazzein. Eight of ... Read more...

Fumigant antitermitic activity of plant essential oils and components from Ajowan ( Trachyspermum ammi ), Allspice ( Pimenta dioica ), caraway ( Carum carvi ), dill ( Anethum graveolens ), Geranium ( Pelargonium graveolens ), and Litsea ( Litsea cubeba ) oils against Japanese termite ( Reticulitermes speratus Kolbe).

10 Aug 2009 Plant essential oils from 26 plant species were tested for their insecticidal activities against the Japanese termite, Reticulitermes speratus Kolbe, using a fumigation bioassay. Responses varied with source, exposure time, and concentration. Among ... Read more...

Latest indexed articles for 'Angiosperms - Chemistry'

These are the very latest articles for this heading:

• Identification of Carboniferous (320 million years old) class Ic amber. 30 Sep 2009
• Paleontology. Pushing back amber production. 30 Sep 2009
• Design and evaluation of new analogs of the sweet protein brazzein. 18 Aug 2009
• Fumigant antitermitic activity of plant essential oils and components from Ajowan ( Trachyspermum ammi ), Allspice ( Pimenta dioica ), caraway ( Carum carvi ), dill ( Anethum graveolens ), Geranium ( Pelargonium graveolens ), and Litsea ( Litsea cubeba ) oils against Japanese termite ( Reticulitermes speratus Kolbe). 10 Aug 2009
• Hydroperoxy-cycloartane triterpenoids from the leaves of Markhamia lutea, a plant ingested by wild chimpanzees. 9 Aug 2009
• Characterization of steroidal saponins in saponin extract from Paris polyphylla by liquid chromatography tandem multi-stage mass spectrometry. 4 Aug 2009
• Anti-collagenase, anti-elastase and anti-oxidant activities of extracts from 21 plants. 2 Aug 2009
• Larvicidal activities of three plants against filarial vector Culex quinquefasciatus Say (Diptera: Culicidae). 29 Jul 2009
• Neural cell protective compounds isolated from Phoenix hanceana var. formosana. 19 Jul 2009
• Innate immune response and disease resistance in Carassius auratus by triherbal solvent extracts. 15 Jul 2009
• Antifungal activity of CHE-23C, a dimeric sesquiterpene from Chloranthus henryi. 6 Jul 2009
• Structural elucidation and NMR spectral assignment of three new furostanol saponins from the roots of Tupistra chinensis. 29 Jun 2009
• Two flavonoid dimers from Sarcandra hainanensis (PEI) SWAMY et BAILEY. 29 Jun 2009
• Phytoextraction of Cd-contaminated soil by carambola (Averrhoa carambola) in field trials. 19 Jun 2009
• Phenylphenalenones from the Australian plant Haemodorum simplex. 30 May 2009
• 9,10-dihydrophenanthrenes and phenanthrenes from Juncus setchuensis. 30 May 2009
• Effects of Microdesmis keayana alkaloids on vascular parameters of erectile dysfunction. 30 May 2009
• Isolation and identification of hemostatic ingredients from Lamiophlomis rotata (Benth.) Kudo. 30 May 2009
• The genus Bridelia: a phytochemical and ethnopharmacological review. 25 May 2009
• New chemical constituents from the rhizomes of Sparganium stoloniferum. 25 May 2009

See a longer list of these articles.

Technical information about 'Angiosperms'

Definition: Any member of the more than 250,000 species of flowering plants. Angiosperms are often differentiated from GYMNOSPERMS by their production of seeds within a closed chamber (OVARY, PLANT). The Angiosperms division is composed of two classes, the monocotyledons (Liliopsida) and dicotyledons (Magnoliopsida).

Descriptor UI: D019684

Alternative terms: Angiosperms; Magnoliophyta;

Allowable Qualifiers: adverse effects; anatomy & histology; classification; cytology; drug effects; embryology; enzymology; genetics; growth & development; immunology; metabolism; microbiology; parasitology; physiology; poisoning; radiation effects; toxicity; ultrastructure; chemistry; virology;

Tree Number: B06.388.100;

History Note: 98

Technical Notes: GEN or unspecified; prefer specific families or specific plants