Pollen Ambrosia artemisiifolia L.: In the air and collected pollen bees
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چکیده
منابع مشابه
Modeling the dispersion of Ambrosia artemisiifolia L. pollen with the model system COSMO-ART
Common ragweed (Ambrosia artemisiifolia L.) is a highly allergenic plant that is spreading throughout Europe. Ragweed pollen can be transported over large distances by the wind. Even low pollen concentrations of less than 10 pollen m(-3) can lead to health problems in sensitive persons. Therefore, forecasting the airborne concentrations of ragweed pollen is becoming more and more important for ...
متن کاملProduction of allergenic pollen by ragweed (Ambrosia artemisiifolia L.) is increased in CO2-enriched atmospheres.
BACKGROUND The potential effects of global climate change on allergenic pollen production are still poorly understood. OBJECTIVE To study the direct impact of rising atmospheric CO2 concentrations on ragweed (Ambrosia artemisiifolia L.) pollen production and growth. METHODS In environmentally controlled greenhouses, stands of ragweed plants were grown from seed through flowering stages at b...
متن کاملComparative Analysis of Acetonic and Watery Pollen Extract of Ambrosia Artemisiifolia L. on Drosophila Melanogaster
Chemical components of the acetone and watery extract of Ambrosia artemisiifolia (LINNAEUS, 1753) plant, and the two identified lactones in the acetone extract: the ambrosin and dihydroambrosin, was tested for genotoxicity activities. The genotoxicity of the extract was tested on the eukaryotic model system Drosophila melanogaster using the sex-linked recessive lethal test (SLRL test). The resu...
متن کاملInteraction of the Onset of Spring and Elevated Atmospheric CO2 on Ragweed (Ambrosia artemisiifolia L.) Pollen Production
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 phen...
متن کاملNew sesquiterpenoids from Ambrosia artemisiifolia L.
A new pseudoguaianolide 1 and two new guaiane-type sesquiterpene glucosides 2 and 3, were isolated from the aerial parts of Ambrosia artemisiifolia L together with two known sesquiterpene dilactones 4 and 5. The new compounds were determined on the basis of spectroscopic and chemical methods to be 3β-acetoxy-4β-hydroxy-1α,7α, 10β,11αH-pseudoguaia-12,8β-olide (1), 1β,7β,9β,10β,13αH-guaia-4(5)-en...
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ژورنال
عنوان ژورنال: Acta herbologica
سال: 2015
ISSN: 0354-4311
DOI: 10.5937/actaherb1502117k