News tagged with pollen

Malfunction of the respiratory epithelium is a cause of allergy?

One reason for the development of allergy may be malfunction of the respiratory epithelium, which allows allergens to bind to, enter and travel through the epithelium. Two studies by Finnish research groups on this subject ...

Medicine & Health / Diseases, Conditions, Syndromes

Apr 03, 2009 | not rated yet | 0

Flight of the bumble (and honey) bee

Insects such as honeybees and bumble bees are predictable in the way they move among flowers, typically moving directly from one flower to an adjacent cluster of flowers in the same row of plants. The bees' ...

Biology / Plants & Animals

Mar 20, 2009 | 5 / 5 (3) | 0

Scientist uses sedimentary record to uncover planet's past

(PhysOrg.com) -- The wind barreled across the ice at Daily Lake as Montana State University paleoecologist Cathy Whitlock and three students used all their strength to pull a metal pipe out of the mucky lake ...

Space & Earth / Earth Sciences

Feb 27, 2009 | 4.4 / 5 (8) | 1

Hold that tissue: Allergy help may be on the way

It isn’t beach weather in most of the United States right now, but it’s never too early to be thinking about spring and summer. Unfortunately, for people with allergies, today’s daydreams can turn into nightmares ...

Chemistry /

Feb 13, 2009 | 4 / 5 (1) | 0

Scientists discover how 'companion' cells to sperm protect them from genetic damage

In plant pollen grains, sperm cells, which carry the genetic material to be passed on to progeny, are cocooned within larger "companion" cells that are called pollen vegetative cells. These companions provide sperm with ...

Biology /

Feb 05, 2009 | not rated yet | 0

Silencing of jumping genes in pollen

Scientists at the Instituto Gulbenkian de Ciência (IGC), in Portugal, are to date the only research group in the world capable of isolating the sperm cells in the pollen grain of the model plant Arabidopsis thaliana. This ...