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Latest Pollen Stories

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2011-02-02 10:36:03

Many plants produce toxic chemicals to protect themselves against plant-eating animals, and many flowering plants have evolved flower structures that prevent pollinators such as bees from taking too much pollen. Now ecologists have produced experimental evidence that flowering plants might also use chemical defenses to protect their pollen from some bees. The results are published next week in the British Ecological Society's journal Functional Ecology. In an elegant experiment, Claudio...

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2011-01-31 11:41:27

Scientists have discovered why orchids are one of the most successful groups of flowering plants - it is all down to their relationships with the bees that pollinate them and the fungi that nourish them. The study, published tomorrow in the American Naturalist, is the culmination of a ten-year research project in South Africa involving researchers from Imperial College London, the Royal Botanic Gardens, Kew, and other international institutions. The orchid family is one of the largest groups...

2011-01-26 13:29:40

When it comes to pollen formation, seed plants go for overproduction Plants producing flower pollen must not leave anything to chance. The model plant thale cress (Arabidopsis), for instance, uses three signaling pathways in concert with partially overlapping functions. The yield becomes the greatest when all three processes are active; however, two are sufficient to form an acceptable quantity of flower pollen. In a new study, Peter Huijser and his colleagues at the Max Planck Institute for...

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2011-01-22 09:05:33

Pollinators interact with their landscapes to affect the genetic structure of 3 Penstemon species in the Great Basin Do mountain tops act as sky islands for species that live at high elevations? Are plant populations on these mountain tops isolated from one another because the valleys between them act as barriers, or can pollinators act as bridges allowing genes to flow among distant populations? Dr. Andrea Kramer and colleagues from the Chicago Botanic Garden and the University of Illinois...

2011-01-13 08:00:00

SAN ANTONIO, Jan. 13, 2011 /PRNewswire/ -- While the rest of the nation battles frigid cold and snow storms, South Texans are dealing with a massive blizzard of pollen. Record-breaking Mountain Cedar pollen counts - the worst since the 90s - are causing even the least symptomatic to suffer. Mountain Cedar, the most prolific pollinating tree in the world, is a drought-tolerant evergreen shrub or small tree, most prevalent in South Central Texas. The pollen can cause a severe allergic...

2010-12-23 18:11:20

Tomato plants use similar biochemical mechanisms to reject pollen from their own flowers as well as pollen from foreign but related plant species, thus guarding against both inbreeding and cross-species hybridization, report plant scientists at the University of California, Davis. The researchers identified a tomato pollen gene that encodes a protein that is very similar to a protein thought to function in preventing self-pollination in petunias. The tomato gene also was shown to play a role...

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2010-12-21 06:00:00

Animals and plants introduced from foreign habitats may not seem harmful and can coexist with native species for decades, according to a European study published Monday. Species that are taken away from their natural predators and placed elsewhere can disrupt native species in their new habitats, and scientists say the problem is already costing Europe $16 billion per year. The study, published in the US Proceedings of the National Academy of Sciences, which is likely to hold true for other...

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2010-12-14 10:56:27

From southern Africa's pineapple lily to Western Australia's swamp bottlebrush, flowering plants are everywhere.  Also called angiosperms, they make up 90 percent of all land-based, plant life. New research published this week in the Proceedings of the National Academy of Sciences provides new insights into their genetic origin, an evolutionary innovation that quickly gave rise to many diverse flowering plants more than 130 million years ago. Moreover, a flower with genetic programming...

2010-11-24 11:32:23

Two proteins involved in powdery mildew infection in plants also play an important role in fertilisation Mildew infections not only cause unsightly vegetable patches, they can also result in extensive crop failure. Interestingly, the processes involved in infections with this garden pest are similar to those involved in fertilisation. Scientists from the Max Planck Institute for Plant Breeding Research in Cologne and the University of Zurich have identified two proteins in the model plant...

2010-11-16 19:15:44

First study to show that elephant-shrews consume the nectar and pollinate the Pagoda lily Long-nosed Cape rock elephant-shrews are fond of sticky treats, according to Dr. Petra Wester from the University of Stellenbosch in South Africa. Her investigations show for the first time that the elephant-shrew, Elephantulus edwardii, licks the nectar of the flowers and pollinates the Pagoda lily. Her results are published in Springer's journal, Naturwissenschaften "“ The Science of Nature. Dr....


Latest Pollen Reference Libraries

30_1f12cae0cfa114ac8945564df871c6d8
2005-06-08 20:47:33

Iris is a genus of flowering plants with showy flowers ranging in color from gold, copper-red or yellow to white, blue, blue-violet, lavender, tan, maroon and purple. Pink and apricot colored irises have also been bred in some species. The name "Iris" can be applied to the genus or to any of the species within it. It is also applied to various subdivisions within the genus. Description There are many species of iris widely distributed throughout the northern temperate zone. Their...

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Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
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