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Chemical warfare between plants and their herbivores and pathogens was first brought to our attention by the publication 25 years ago of the paper by Fraenkel in Science. There, he pointed out that most plants have similar nutritional characteristics so that the selection of plants by insect herbivores must depend on the relative toxicity of secondary compounds. This led, rather gradually, to a host of papers on plant-herbivore interactions. More or less at the same time, insect physiologists and ecologists were starting to realise the importance of chemical communi cation systems in determining sexual and other characteristics of insect behaviour. Nine years ago the Phytochemical Society of...
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First multi-year cumulation covers six years: 1965-70.
The flavonoids, one of the most numerous and widespread groups of natural constituents, are important to man not only because they contribute to plant colour but also because many members (e.g. coumestrol, phloridzin, rotenone) are physiologically active. Nearly two thousand substances have been described and as a group they are universally distributed among vascular plants. Although the anthocyanins have an undisputed function as plant pigments, the raison d'etre for the more widely distributed colourless flavones and flavonols still remains a mystery. It is perhaps the challenge of discovering these yet undisc10sed functions which has caused the considerable resurgence of interest in flavo...
Blooming with rare archival images, the story of scientific botanical illustrations over nearly seven hundred years. In a world flooded with images designed to create memories, validate perceptions, and influence others, botanical illustration is about something much more focused: creating technically accurate depictions of plants. Reproductions of centuries-old botanical illustrations frequently adorn greeting cards, pottery, and advertising, to promote heritage or generate income, yet their art is scientific: intended to record, display, and transmit scientific data. The Beauty of the Flower tells the backstory of these images, showing us how scientific botanical illustrations are collaborations among artists, scientists, and publishers. It explores the evolution and interchanges of these illustrations since the mid-fifteenth century, how they have been used to communicate scientific ideas about plants, and how views of botanical imagery change. Featuring unique images rarely seen outside of specialist literature, this book reveals the fascinating stories behind these remarkable illustrations.
Fifteen distinguished scientists discuss the effects of life--past and present--on planet Earth.