Peter B. Kaufman

Of the many books written about leadership, few move beyond conventional accounts of theory, or truly scrutinise the leadership agenda. However, this exciting book sets a new agenda for the interpretation of leadership and development. Including contributions from some of the most distinctive leaders in the field, it considers the newest themes to come out of the leadership debate. Topics covered include: * leadership and integrity * learning leadership * career individualization * leadership development in the public sector. One of the first books to systematically link leadership and management, this distinctive and challenging text examines leadership in the context of career development. It critically assesses the more conventional training and development available to managers, and in doing so equips readers with the analytical perspectives and tools needed to understand the significance of leadership in contemporary organizations.

Phytochemicals: The Chemical Components of Plants H.L. Brielmann Jr., W.N. Setzer, P.B. Kaufman, A. Kirakosyan, and L.J. Cseke How and Why These Compounds Are Synthesized by Plants L.J. Cseke, C.R. Lu, A. Kornfeld, P.B. Kaufman, and A. Kirakosyan Regulation of Metabolite Synthesis in Plants L.J. Cseke and P. B. Kaufman Plant Natural Products in the Rhizosphere Bhinu, V.S., K. Narasimhan, and S. Swarup Molecular Biology of Plant Natural Products Sheela Reuben, L.J. Cseke, Bhinu, V.S., K. Narasimhan, M. Jeyakumar and S. Swarup The Study of Natural Product Biosynthesis in the Pregenomics and Genomics Eras F. Chen, L.J. Cseke, H. Lin, A. Kirakosyan, J.S. Yuan, and P. Kaufman Plant Biotechnology for the Production of Natural Products A. Kirakosyan Traditional, Analytical, and Preparative Separations of Natural Products L.J. Cseke, W.N. Setzer, B. Vogler, A. Kirakosyan, and P.B. Kaufman Characterization of Natural Products B. Vogler and W.N. Setzer Bioassays for Activity W.N. Setzer and B. Vogler Modes of Action at Target Sites S. Warber, E.M. Seymour, P. Kaufman, A. Kirakosyan, and L.J. Cseke The Uses of Plant Natural Products by Humans and Risks Associated with Their Use P.B. Kaufman, A. Kirakosyan, M. McKenzie, P. Dayanandan, J.E. Hoyt, and C. Li The Synergy Principle at Work with Plants, Pathogens, Insects, Herbivores, and Humans K. Spelman, J.A. Duke and M.J. Bogenschutz-Godwin Plant Conservation M.J. Bogenschutz-Godwin, J.A. Duke, M. McKenzie, and P.B. Kaufman Relationship Between People and Plants S. Warber and K. Irvine Appendix:Information Retrieval on Natural Products in Plants Indexes: Chemicals, Plant Species and Common Names, and Subject

Over 80 taxa of mostly agriculturally important legumes were surveyed as sources of the metabolites, genistein and daidzein. Remarkably high concentrations (over 2 g.kg-1 dry weight) of the anticancer metabolite, genistein, were found in the leaves of Psoralea corylifolia (Indian bread root). All other legumes, with the exception of fermented soybean miso, had genistein levels < 400 mg.kg-1 dry weight. Concentrations of over 1 g.kg-1 dry weight and 0.95 g.kg-1 dry weight of the anticancer metabolite, daidzein, were found in the stems of the fava bean (Vicia faba) and roots of kudzu vine (Pueraria lobata), respectively. From this survey, our results indicate that the legumes, lupine (Lupinus spp.), fava bean, (Vicia faba), soybeans (Glycine max), kudzu (Pueraria lobata), and psoralea (Psoralea corylifolia), are excellent food sources for both genistein and daidzein. Miso, a fermented soybean product, is also a rich source of both isoflavones.

SummaryTo evaluate the positive efTects of silicon on the stress tolerance of rice plants, we measured the electrolyte leakage (El) from leaf tissue caused by desiccation with polyethylene glycol (PEG) and by high temperature to estimate the integrity of cell membranes. The El caused by 30% and 40% solutions of PEG decreased with the increase in the level of Si in leaves. In leaves of plants grown with 100 ppm Si02, the level of polysaccharides in cell walls, which is one of the factors related to tolerance to desiccation, was 1.6-fold higher than that in leaves of plants grown without Si. Ultrastructural observations of leaves revealed that polymerized Si accumulated in the walls of epidermal cells but not in those of the mesophyll cells, which are probably the main sites of El. These findings suggested that silicon in rice leaves is involved in the water relations of cells, such as mechanical properties and water permeability and plays a role in preventing El through the synthesis and functions of cell walls. The El caused by high temperature (42.5° C) was also lower in the leaves grown with Si than in the leaves grown without Si, suggesting the involvement of silicon in the thermal stability of lipids in cell membranes. These results suggested that silicon prevents the structural and functional deterioration of cell membranes when rice plants are exposed to environmental stress.