Navigation Links
Bitter-tasting nectar and floral odors optimize outcrossing for plants
Date:8/28/2008

This release is available in German.

Animals "personally" bring their gametes together seeking out sexual partners, mating, fertilizing, and reproducing. Plants, however, are sessile organisms and require the help of a third party, the pollinator, which can be a bird, mouse or insect that transport pollen to receptive stigmas frequently over large distances. The colors and shapes of flowers as well as their volatile signals and nectar attract and reward the pollinators for their efforts. But not all flower visitors are pollinators, as many come only to steal nectar without transporting pollen or eat flower parts. Scientists at the Max Planck Institute for Chemical Ecology, Jena, have discovered that the chemistry of floral scents and nectar enforces good pollinator behavior and allows plants to optimize their ability to exchange gametes with each other. In a paper published in the latest issue of SCIENCE (August 29, 2008), the scientists report the results from field experiments with genetically modified wild tobacco plants that show that particular components of the floral fragrance attracted pollinators, while bitter-tasting and poisonous components of floral nectar enforced modest drinking behavior. Apart from sugars, the floral nectar of tobacco also contains nicotine, which is bitter and used to deter nectar thieves or herbivores. But given the right timing and dose, nicotine in the nectar and the attractant, benzyl acetone, released at night as part of the floral scent, ensure that the visits of pollinators such as hummingbirds and hawk moths optimize the tobacco plant's ability to exchange gametes and produce outcrossed seeds.

Prior to these field tests, the researchers showed that the amount of nicotine in the floral nectar of wild tobacco influenced pollination by the tobacco hornworm Manduca sexta and two hummingbird species [1]. T
'/>"/>

Contact: Ian T. Baldwin
baldwin@ice.mpg.de
49-175-180-4226
Max Planck Institute for Chemical Ecology
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Layered approach may yield stronger, more successful bone implants
2. Clever plants chat over their own network
3. Plants can be used to study how and why people respond differently to drugs
4. Book on weeds and invasive plants discusses how to manage them using ecological approaches
5. A greenhouse in order to study the impact of climate change on plants
6. Agent that triggers immune response in plants is uncovered
7. Scientists ramp up ability of poplar plants to disarm toxic pollutants
8. A new baseline of invasive plants in Isabela
9. Hungry microbes share out the carbon in the roots of plants
10. Scientists warn that species extinction could reduce productivity of plants on Earth by half
11. Cell transplants may improve severe urinary incontinence
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2014)... All human cells contain essentially the same DNA sequence ... shapes and functions of cells in the different parts ... DNA contains the same construction master plan, an additional ... possible DNA programs are active. This mechanism involves modifications ... small chemical groups (e.g. methylation). It acts on top ...
(Date:9/2/2014)... the most ideal source of nutrition for infants ... in the evolution and civilizations of human beings. ... large number of bacterial species, including some opportunistic ... surprise to scientists and physicians. , Indeed, the ... the result of co-evolutionary and co-adaptive interactions between ...
(Date:9/2/2014)... as perching birds, that migrate by night tend to ... to reach their destinations. This seasonal difference in flight ... short migratory flights, says researcher Cecilia Nilsson of Lund ... and Sociobiology . , Nilsson, in a group ... to measure over three years the speed by which ...
Breaking Biology News(10 mins):Throwing a loop to silence gene expression 2Are human breast milk microbiome 'neutral'? 2Are human breast milk microbiome 'neutral'? 3Migrating birds sprint in spring, but take things easy in autumn 2
... is to fund research exploring the link between Bisphenol A ... heart disease. The grant is for 119,169. In the ... have suggested that some manmade chemicals might be linked to ... used in some types of plastic containers. A ...
... An award-winning nature essay, written during a USDA Forest ... for nature writing. The essay, "Mind in the Forest," ... Indiana University, stresses the author,s connection with nature, especially ... issue of how humans engage with the natural world. ...
... Plants respond to attacks by herbivores or pathogens by ... the attackers. These defense responses require a great deal ... be invested in growth and reproduction. So, it,s very ... Hormones, such as the jasmonates, are crucial in this ...
Cached Biology News:Nature essay made possible by Forest Service program, is Orion Magazine selection 2Biologists discover an on/off button on plants' alarm system 2
(Date:9/1/2014)... Sept. 1, 2014 Reportlinker.com announces that ... its catalogue: India Solid Waste Management ... http://www.reportlinker.com/p02350445/India-Solid-Waste-Management-Vehicles-Market-Forecast-and-Opportunities-2019.html In ... main governing bodies responsible for complete handling and ... an average, around 135,000 MT solid waste is ...
(Date:9/1/2014)... September 01, 2014 The Collaborative ... Diagnostics report provides comprehensive understanding and unprecedented access ... into by the worlds leading life science companies. ... analysis of how and why companies enter collaborative ... prospective partner’s negotiated deals terms provides critical insight ...
(Date:8/31/2014)... 2014 Available spectra is similar ... research and cultivation of a wide range of ... LEDs with proven patented and pending wide spectrum ... uniformity in critical applications in contrast to growth ... “Our customers have a large variety of differently ...
(Date:8/31/2014)... This is a professional and in-depth ... Hardener industry in Global and China. The ... including definitions, applications and industry chain structure. Global ... provided with a focus on history, developments, trends ... between the international and Chinese situation is also ...
Breaking Biology Technology:India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 2India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 3India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 4India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 5India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 6India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 7India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 8Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 2Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 3Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 4Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3
... Centre leads the way in harnessing private sector for agricultural innovation , ... VINELAND, ON , June 30 ... today issued a response to the G20,s Communiqué to "Harness the private sector ... , , ...
... STOCKHOLM , June 30, 2010 , ... - Agreement Marks Milestone in Pharmalink,s Corporate ... Pharmalink AB, today ... Xepol(R) programme for the,treatment of post-polio syndrome (PPS). The parties had previously announced,reaching an ...
... Danish scientists have used Computer Tomography (CT) and Magnetic ... including alligators, snakes and tarantulas. Images revealed, for ... internal organs in preparation for a big meal and ... scientists think MRI and CT images of animal anatomy ...
Cached Biology Technology:Vineland shows Canadian leadership with response to G20 2Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 2Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 3Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 4Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 5Feast and famine: MRI reveals secrets of animal anatomy 2
... For nucleofection of optimized cell lines in ... the nucleofection parameters. Nucleofector Kits are only ... Different cell lines can be transfected with ... are given in brackets in percent (Efficiency ...
... Human Pathogenic Viruses The National ... preserves well characterised, authenticated human ... facility, and NCPV is able ... nucleic acids derived from them, ...
B-FABP (FL-132)...
... a highly purified preparation of the catalytic ... which recognizes the identical cleavage site as ... enzymatic activity (1). Novagen&'s enzyme is produced ... the highest activity available, and is qualified ...
Biology Products: