Adonis

Abstract: PART I: 1.Unnatural Acts: Erotic Protocols in Artemidoros' Dream Analysis 2. Laying down the Law: The Oversight of Men's Sexual Behaviour in Classical Athens 3. The Constraints of Desire: erotic Magical Spells 4. The Education of Chloe: Hidden Injuries of Sex PART II: 5. Penelope's Cunning and Homer's 6. Double Consciousness in Sappho's Lyrics 7. Demeter and the Gardens of Adonis

Abstract: Ancient sources and modern scholars have often represented the Athenian festival of Adonis as a marginal and faintly ridiculous private women's ritual Seeds were planted each year in pots and, once sprouted, carried to the rooftops, where women lamented the death of Aphrodite's youthful consort Adonis Laurialan Reitzammer resourcefully examines a wide array of surviving evidence about the Adonia, arguing for its symbolic importance in fifth- and fourth-century Athenian culture as an occasion for gendered commentary on mainstream Athenian practices Reitzammer uncovers correlations of the Adonia to Athenian wedding rituals and civic funeral oration and provides illuminating evidence that the festival was a significant cultural template for such diverse works as Aristophanes' drama Lysistrata and Plato's dialogue Phaedrus Her fresh approach is a timely contribution to studies of the ways gender and sexuality intersect with religion and ritual in ancient Greece

Abstract: The red ketocarotenoid astaxanthin (3,3'-dihydroxy-4,4'-diketo-beta,beta-carotene) is widely used as an additive in feed for the pigmentation of fish and crustaceans and is frequently included in human nutritional supplements as well. There is considerable interest in developing a plant-based biological production process for this valuable carotenoid. Adonis aestivalis (Ranunculaceae) is unusual among plants in synthesizing and accumulating large amounts of astaxanthin and other ketocarotenoids. The formation of astaxanthin requires only the addition of a carbonyl at the number 4 carbon of each beta-ring of zeaxanthin (3,3'-dihydroxy-beta,beta-carotene), a carotenoid typically present in the green tissues of higher plants. We screened an A. aestivalis flower library to identify cDNAs that might encode the enzyme that catalyzes the addition of the carbonyls. Two closely related cDNAs selected in this screen were found to specify polypeptides similar in sequence to plant beta-carotene 3-hydroxylases, enzymes that convert beta-carotene (beta,beta-carotene) into zeaxanthin. The Adonis enzymes, however, exhibited neither 4-ketolase nor 3-hydroxylase activity when presented with beta-carotene as the substrate in Escherichia coli. Instead, the products of the Adonis cDNAs were found to modify beta-rings in two distinctly different ways: desaturation at the 3,4 position and hydroxylation of the number 4 carbon. The 4-hydroxylated carotenoids formed in E. coli were slowly metabolized to yield compounds with ketocarotenoid-like absorption spectra. It is proposed that a 3,4-desaturation subsequent to 4-hydroxylation of the beta-ring leads to the formation of a 4-keto-beta-ring via an indirect and unexpected route: a keto-enol tautomerization.