Related Experiment Video
Updated: Jul 15, 2026
10:57
Scanning Electron Microscopy (SEM) Protocols for Problematic Plant, Oomycete, and Fungal Samples
Published on: February 3, 2017
[Nemoroside and nemorososide, new iridoid glucosides from Penstemon nemorosus]
1Institut für Pharmazeutische Biologie der Philipps-Universität Marburg, Bundesrepublik Deutschland.
Planta Medica
|February 1, 1983
Abstract:
From leaves of Penstemon nemorosus Trautv. two new esteriridoids have been isolated. Iridoidic moieties are catapol and ajugol, both esterified with 8-hydroxy-2,6-dimethyl-2,6-octadienoic acid. The structure was established by spectroscopic methods and comparison with known compounds.
Related Concept Videos
02:40Epiphytes, Parasites, and Carnivores
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the biosynthesis of the...
03:24Seedless Vascular Plants
Seedless Vascular Plants Were the First Tall Plants on Earth