(Phys.org) -- Allergy to pollen of common ragweed is increasingly affecting patients and is second only to grass pollen in terms of incidence in the general population of many European countries. An Italian team led by Giovanni ...
Biochemistry
Aug 3, 2012
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In a paper published in PLoS ONE, scientists at the University of Illinois released their findings on what microscopy techniques are needed to identify the shape and texture of pollen grains. Understanding pollen morphology ...
Plants & Animals
Jun 12, 2012
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Many ancient human teeth, including specimens tens of thousands of years old, still hold onto tiny pieces of food -- and even bacteria. Anthropologists are studying the tartar attached to ancient human teeth to learn more ...
Archaeology
May 31, 2012
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Amber from Cretaceous deposits (110-105 my) in Northern Spain has revealed the first ever record of insect pollination. Scientists have discovered in two pieces of amber several specimens of tiny insects covered with pollen ...
Plants & Animals
May 14, 2012
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Pollen may annoy allergy sufferers in springtime but, viewed under the microscope, a pollen grain is a thing of beauty. Amazing images and facts about pollen are part of an exhibition at CSIRO Discovery in Canberra beginning ...
Other
Nov 29, 2011
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(PhysOrg.com) -- Each grinning jack-o'-lantern starts with yellow pollen grains, ferried from a male to a female pumpkin flower by bees. Honeybee populations are in decline, but Cornell entomologist Brian Nault has identified ...
Ecology
Jul 6, 2011
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In many organisms females directly or indirectly select mates (or sperm) and potentially influence the fitness of their offspring. Mate choice and sexual selection in plants is more complex in some ways than in animals because ...
Plants & Animals
Jun 27, 2011
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(PhysOrg.com) -- Scientists have long scratched their heads over the Earth’s dazzling array of flowering plants. While conifers took 300 million years to yield hundreds of species, flowering plants diversified in less ...
Plants & Animals
Jun 21, 2011
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Biologists at the University of Leicester have published results of a new study into the intricacies of sex in flowering plants.
Cell & Microbiology
Feb 2, 2011
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(PhysOrg.com) -- Plants producing flower pollen must not leave anything to chance. The model plant thale cress (Arabidopsis), for instance, uses three signalling pathways in concert with partially overlapping functions. The ...
Biotechnology
Jan 25, 2011
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