Effects of Global Warming on Berry Composition of cv. Sangiovese: Biochemical and Molecular Aspects and Agronomical Adaptation Approaches

Wine grape must deal with serious problems due to the unfavorable climatic conditions resulted from global warming. High temperatures result in oxidative damages to grape vines. The excessive elevated temperatures are critical for grapevine productivity and survival and contribute to degradation of grape and wine quality and yield. Elevated temperature can negatively affect anthocyanin accumulation in red grape. Particularly, cv. Sangiovese was identified to be very sensitive to such condition. The quantitative real-time PCR analysis showed that flavonoid biosynthetic genes were slightly repressed by high temperature. Also, the heat stress repressed the expression of the transcription factor “VvMYBA1” that activates the expression of UFGT. Moreover, high temperatures had repressing effects on the activity of the flavonoids biosynthetic enzymes “PAL” and “UFGT”.Anthocyanin accumulation in berry skin is due to the balance between its synthesis and oxidation. In grape cv. Sangiovese, the gene transcription and activity of peroxidases enzyme was elevated by heat stress as a defensive mechanism of ROS-scavenging. Among many isoforms of peroxidases genes, one gene (POD 1) was induced in Sangiovese under thermal stress condition. This gene was isolated and evaluated via the technique of genes transformation from grape to Petunia. Reduction in anthocyanins concentration and higher enzymatic activity of peroxidase was observed in POD 1 transformed Petunia after heat shock compared to untrasformed control. Moreover, in wine producing regions, it is inevitable for the grape growers to adopt some adaptive strategies to alleviate grape damages to abiotic stresses. Therefore, in this thesis, the technique of post veraison trimming was done to improve the coupling of phenolic and sugar ripening in Vitis vinifera L. cultivar Sangiovese. Trimming after veraison showed to be executable to slow down the rate of sugar accumulation in grape (to decrease the alcohol potential in wines) without evolution of the main berry flavonoids compounds.

The Politics of Accountability and Teacher Preparation: A Case Study from Pennsylvania

In an effort to understand some of the ways that accountability-based reform efforts have influenced teacher education, this article details the politics of accountability in Pennsylvania that motivated sweeping changes in the policies governing teacher preparation in 2006. This case study provides a poignant example of the kind of complex accountability systems now being constructed across the United States in an effort to change teacher preparation. By analyzing primary documents including the legal statutes governing teacher preparation in Pennsylvania, correspondence from the Pennsylvania Department of Education, related newsletters, memos, reports, transcripts of meetings, and testimony before the Pennsylvania House of Representatives, the complex nature of the conflicts underlying the development and implementation of teacher education reform is brought into focus. The study's findings suggest that a deep and uncritical acceptance of accountability-based teacher education reform on the part of educational policy makers is likely to do more harm than good. The article concludes by outlining a framework for developing more intelligent measures of accountability that might preserve professional autonomy and judgment.

"Flirts and Other "Voluptuous Tyrants":Wollstonecraft, Rousseau and the Politics of Desire"

For the 18th and 19th centuries, flirtation was largely understood to be the symptom of a woman’s uncontrollable (and innate) sexual appetite. Any woman who questioned its cultural operations, such as Mary Wollstonecraft, was accused of being simultaneously sexually inappropriate in her interests, as well as prudish in her denial of feminine desire as a legitimate expression of a woman’s character. What this talk will argue, however, is that, for Wollstonecraft, the flirt is a fundamentally masculine figure who engages not in a struggle over desire, but rather in a struggle for power based on monarchical politics of the Ancien Regime.

The Politics of Accountability and Teacher Preparation

In an effort to understand some of the ways that accountability-based reform efforts have influenced teacher education, this article details the politics of accountability in Pennsylvania that motivated sweeping changes in the policies governing teacher preparation in 2006. This case study provides a poignant example of the kind of complex accountability systems now being constructed across the United States in an effort to change teacher preparation. By analyzing primary documents including the legal statutes governing teacher preparation in Pennsylvania, correspondence from the Pennsylvania Department of Education, related newsletters, memos, reports, transcripts of meetings, and testimony before the Pennsylvania House of Representatives, the complex nature of the conflicts underlying the development and implementation of teacher education reform is brought into focus. The study's findings suggest that a deep and uncritical acceptance of accountability-based teacher education reform on the part of educational policy makers is likely to do more harm than good. The article concludes by outlining a framework for developing more intelligent measures of accountability that might preserve professional autonomy and judgment.

Economic Policies to Address the Environmental Consequences of Global Reuse

This paper summarizes a two-country model that solves for optimal tax rates to achieve efficiency in an economy with international trade in used consumer electronics. If only the developed nation can tax the disposal of e-waste, then the global Pareto Optimum can be obtained by either imposing an import tariff on used consumer electronics or subsidizing the return of e-waste for disposal in the developed country. The global Pareto Optimum can also be obtained by reducing the disposal tax in the developed country to a level below the external marginal cost of disposal should no other policy option be available.