The features of the influence of drugs "AB aqva" and "Charkor" on the anatomic structure and histogenesis roots rooted cuttings Swida alba (L.) Opiz, Forsythia europaea Degen & Bald., Spiraea × ...vanhouttei (Briot.) Zabel. and Spiraea japonica L. 'Shirobana'. Determined speciesspecific morphological and physiological reactions wood bearing cuttings to root stimulant effect and proved their potential role in the process of plant adaptation to arid conditions and low positive temperatures.
An organic herbicide carrier could help reduce misapplication and environmental pollution associated with spray application of herbicides. Pellets prepared from landscape leaves that were dried, ...ground, and pelletized were evaluated as a preemergence herbicide carrier for container-grown ornamental plants. Isoxaben, pendimethalin, and prodiamine at rates of 1.12, 2.25, and 2.25 kg ai/ha, respectively, with either water or landscape leaf-waste pellets as a carrier were applied to chrysanthemum 'Lisa', spirea 'Neon Flash', and wintercreeper 'Coloratus'. Common groundsel, common purslane, and giant foxtail were seeded following herbicide application. Leaf-waste pellets as a carrier produced equivalent efficacy and phytotoxicity ratings to conventional spray application of pendimethalin and prodiamine on both chrysanthemum and wintercreeper. The leaf-waste pellets were not an effective carrier for the application of isoxaben alone. The pellets had inconsistent effects on spirea phytotoxicity and growth.
Four new diterpenes such as spiramacetai (1), were isolated from
Spiraea japonica var. acuta Yu
Four new diterpenes, spiramacetal, spiramadol, spiramilactone C and D, were isolated from
Spiraea ...japonica var. acuta Their structures were elucidated by chemical and spectral means.
The neuroprotective effects of spiramine T, an atisine-type diterpenoid alkaloid isolated from the Chinese herbal medicine Spiraea japonica var. acuta (Rosaceaee), on cerebral ischemia-reperfusion ...injury produced by 10-min bilateral occlusion of the common carotid arteries followed by 5-day reperfusion in gerbils were investigated. Intravenous spiramine T (0.38, 0.75, and 1.5 mg.kg-1) markedly reduced the stroke index, enhanced the recovery of EEG amplitude during reperfusion and decreased the concentrations of cortex calcium and LPO in a dose-dependent manner. However, no significant effects on water and sodium contents were observed. These results suggested that spiramine T exhibited protective effects on cerebral ischemia-reperfusion injury in gerbils, and its mechanism might be related to reducing calcium accumulation and lipid peroxidation. This is the first report on spiramine T as a natural product with neuroprotective effects.
Abstract
The addition of commercial mycorrhizal, transplant gel and/or biostimulant products to the root balls or backfill soil of Japanese holly, (Ilex crenata Thunb. ‘Green Luster’); arborvitae, ...(Thuja occidentalis L. ‘Emerald Green’); Japanese spirea, (Spiraea japonica L.f. ‘Shibori’); Bradford Callery pear, (Pyrus calleryana Decne. ‘Cleveland Select’ and ‘Redspire’) at the time of planting did not lead to significant improvement of plant growth or transplant survival compared to untreated plants receiving routine mulching with pine bark mulch alone.
Some plant alkaloids have been in use as cardio‐protective agents. This chapter highlights some alkaloids as anti‐platelet agents, with a possible mechanism of action based on the literature. ...Alkaloids are present abundantly, and in high concentrations, in natural plants, and several of them possess anti‐platelet activity. This chapter addresses the anti‐platelet activity of alkaloids and their possible uses and mechanisms as potent anti‐platelet agents. The most important and effective alkaloids against platelets are curcumin, reticulin, piperlongumine, and melicarpinone that can be used as anti‐platelet agents.
Three new diterpene alkaloids, namely spiramines P, Q and R, together with the known compounds, spiramines A and B, were isolated from roots of
Spiraea japonica var.
insica Yu. Their structures were ...elucidated by chemical and spectroscopic means.
On the basis of detailed
1
H-NMR,
13
C-NMR spectral analysis, especially by 2D NMR experiments (
1
H-
1
H COSY, HMQC, HMBC, and NOESY) as well as by chemical transformations, four isoatisine type ...diterpenoid alkaloids, spiramines P and Q, and U and T, have been reassigned as the 6β hydroxyl and 6β acetoxyl substituents, respectively, rather than the previously assigned 15α counterparts in our further studies on chemical constituents of the roots of Spiraea japonica var. acuta.
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