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Interaction Of The Onset Of Spring And Elevated Atmospheric Co2 On Ragweed (Ambrosia Artemisiifolia L.) Pollen Production, Christine A. Rogers, P Wayne, E Macklin, M L. Muilenberg, C W. Wagner, P R. Epstein, F A. Bazzaz
Interaction Of The Onset Of Spring And Elevated Atmospheric Co2 On Ragweed (Ambrosia Artemisiifolia L.) Pollen Production, Christine A. Rogers, P Wayne, E Macklin, M L. Muilenberg, C W. Wagner, P R. Epstein, F A. Bazzaz
Christine A. Rogers
Increasing atmospheric carbon dioxide is responsible for climate changes that are having widespread effects on biological systems. One of the clearest changes is earlier onset of spring and lengthening of the growing season. We designed the present study to examine the interactive effects of timing of dormancy release of seeds with low and high atmospheric CO2 on biomass, reproduction, and phenology in ragweed plants (Ambrosia artemisiifolia L.), which produce highly allergenic pollen. We released ragweed seeds from dormancy at three 15-day intervals and grew plants in climate-controlled glasshouses at either ambient or 700-ppm CO2 concentrations, placing open-top bags over inflorescences …
How Exposure To Environmental Tobacco Smoke, Outdoor Air Pollutants, And Increased Pollen Burdens Influence The Incidence Of Asthma, M I. Gilmour, M S. Jaakola, S J. London, A Nel, Christine A. Rogers
How Exposure To Environmental Tobacco Smoke, Outdoor Air Pollutants, And Increased Pollen Burdens Influence The Incidence Of Asthma, M I. Gilmour, M S. Jaakola, S J. London, A Nel, Christine A. Rogers
Christine A. Rogers
Asthma is a multifactorial airway disease that arises from a relatively common genetic background interphased with exposures to allergens and airborne irritants. The rapid rise in asthma over the past three decades in Western societies has been attributed to numerous diverse factors, including increased awareness of the disease, altered lifestyle and activity patterns, and ill-defined changes in environmental exposures. It is well accepted that persons with asthma are more sensitive than persons without asthma to air pollutants such as cigarette smoke, traffic emissions, and photochemical smog components. It has also been demonstrated that exposure to a mix of allergens and …