Farm Size and Lymphoma Cancer in Maine

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Population Density and Dams in Maine

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Woodlot Ownership in Maine

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The role of TaABF1 in abscisic acid-mediated suppression of -amylase gene expression in cereal grains

The phytohormones gibberellin (GA) and abscisic acid (ABA) regulate important developments events in germinating seeds. Specifically, GA induces the expression of hyrolase genes, like the α-amylase gene Amy32b, which mobilizes starch reserves to be used by the embryo, and ABA suppresses this induction. Recent advancements identified ABA and GA receptors and key components in the signaling pathways, however, the mechanism of crosstalk between the hormones remains largely unknown. To further elucidate the mechanism of ABA suppression of GA-induced genes, we focused on the transcription factor TaABF1, a member of the ABA response element binding factor family. TaABF1 has been shown to physically interact with the SnRK2 kinase PKABA1 and overexpression of TaABF1 or PKABA1 can suppress Amy32b. We carried out particle bombardment experiments to investigate how TaABF1 suppresses Amy32b and how TaABF1 is activated by ABA. The role of TaABF1 in ABA-mediated suppression of Amy32b is more complicated than hypothesized. Unlike PKABA1, overexpression of TaABF1 did not cause a decrease of GAMyb expression and in fact resulted in an increase of GAMyb expression. When TaABF1 and GAMyb were simultaneously overexpressed in aleurone, the GAMyb induction of Amy32b was unaffected, indicating that the target of TaABF1 action must be upstream of GAMyb. Furthermore, TaABF1 and ABA demonstrated an additive effect on the suppression of Amy32b. Based on our findings, we propose a model in which PKABA1 activates two separate targets, one being TaABF1 which then modifies an unknown target upstream of GAMyb and the other being an unknown transcription factor that suppresses GAMyb transcription.

The Emerging Civil Society in China and Its Impact on Democratization

Recent years have seen an emerging civil society in an authoritarian China. The authoritarian embrace of civil society challenges the conventional wisdom that civil society is closely linked to democracy. In Beijing, the rhetoric of civil society linked less to democracy than to modernization. However, does civil society development have any impact on democratization in authoritarian regimes? The thesis tries to provide a tentative answer by studying civil society and democratization in post-Mao China. As a result of economic development and political reforms, gradual political liberalization has marked a shift of state-society relations that gives rise to a certain degree of democratization and a growing civil society. The thesis uses a statistical correlation study to examine the relations between grassroots democratization and civil society development. The study concludes that civil society development may have contributed to democratization at the grassroots level but not on the national level. The impact of civil society on democratization depends on the political structure of the state and will remain limited unless the government allows for further state-led democratic openings.

Wetlands and Conservation Lands of Maine

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Woodlot Ownership and Forest Cover in Maine

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Lighthouses and Shipwrecks of Maine

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WIND POWER IN MAINE: BALANCING CONSERVATION AND ENERGY PRODUCTION

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CORRIDORS FOR WOLF REINTRODUCTION TO MAINE

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