Strychnos 1990 - 2004 - Crops for the Future

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Author Title Year Source title Reference Abstract Mori, M., M. Nakanishi, D. Kajishima and Y. Sato A new and general synthetic pathway to strychnos indole alkaloids: Total synthes 2001 Organic Letters 3(12): 1913-1916 - Author Title Year Source title Reference Oppelt AL; Kurth W; Godbold DL Topology, scaling relations and leonardo's rule in root systems from African tree s 2001 Tree Physiology 21(2-3): 117-128 Abstract Aspects of root architecture, including topology, link length, diameter and scaling relations, were analyzed in excavated coarse root systems of three field-grown fruit tree species (Strychnos cocculoides Bak., Strychnos spinosa Lam. And Vangueria infausta Burch) and the fruit-bearing shrub Grewia flava DC. We investigated the root systems using semi-automatic digitizing and computer-based 3-D reconstruction techniques. Topological analysis was carried out to investigate branching patterns as basic determinants of root architecture. New topological indices were developed and revealed significant differences among the species. The different architectural strategies can be explained in terms of cost-benefit relations and efficiency in soil resource exploration and exploitation. In addition, some well-known hypotheses about geometry and scaling, most of them previously unverified by empirical observations on root systems, were tested. For practical applications, the main emphasis is on the relationship between proximal root diameter, an easily determined parameter, and several parameters describing the size of the whole root system. We also tested the "pipe stem" theory, essentially dating back to Leonardo da Vinci, which underlies many models and which we found conformed to our measurement data with reasonable accuracy. A physiological consequence of the "constant cross-sectional area rule" may be a certain homogeneity of hydraulic architecture throughout root systems. Other species included: Grewia flava; Strychnos spinosa; Vangueria infausta.
Author Title Year Source title Reference Penelle, J., P. Christen, J. Molgo, M. Tits, V. Brandt, M. Frederich and L. Angeno 5 ',6 '-dehydroguiachrysine and 5 ',6 '-dehydroguiaflavine, two curarizing quaterna 2001 Phytochemistry 58(4): 619-626 Abstract Two new quaternary indole alkaloids 5',6'-dehydroguiachrysine (1) and 5',6'-dehydroguiaflavine (2) were isolated from Strychnos guianensis stem bark. Their structures were determined by analysis of spectral data. Their inhibitory effects on neuromuscular transmission are also reported and compared to that of other quaternary alkaloids. © 2001 Elsevier Science Ltd. All rights reserved. Author Title Year Source title Reference Rasoanaivo, P., G. Palazzino, M. Nicoletti and C. Galeffi The co-occurrence of c(3) epimer n-b,c(21)-secocuran alkaloids in Strychnos dipl 2001 Phytochemistry 56(8): 863-867 Abstract From the stem bark of Strychnos diplotricha, three N-b,C(21)-secocuran alkaloids, viz., 3-epimyrtoidine, 11- demethoxy-3-epi-myrtoidine and 11-demethoxy-12-hydroxy-3-epi-myrtoidine, were isolated together with the known myrtoidine and 11-demethoxymyrtoidine. They also occur in different parts of S. myrtoides. (C) 2001 Elsevier Science Ltd. All rights reserved. Author Title Year Source title Reference Shoba, F. G. and M. Thomas Study of antidiarrhoeal activity of four medicinal plants in castor-oil induced diarr 2001 Journal of Ethnopharmacology 76(1): 73-76 Abstract A study was undertaken to evaluate the effect of aqueous and methanolic plant extracts of Acorus calamus rhizome, Pongamia glabra leaves, Aegle marmelos unripe fruit and Strychnos nux-vomica root bark for their antidiarrhoeal potential against castor-oil induced diarrhoea in mice. The methanolic plant extracts were more effective than aqueous plant extracts against castor-oil induced diarrhoea. The methanolic plant extracts significantly reduced induction lime of diarrhoea and total weight of the faeces. The result obtained establish the efficacy of these plant extracts as antidiarrhoeal agents. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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Strychnos 1990 - 2004 - Crops for the Future

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