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

ovary), the other on male fitness (successful pollination of neighboring plants).

To determine female fitness, the flowers of the four transgenic plant lines were emasculated by removing the anthers. This enabled the researchers to measure only animal-mediated fertilization success rates, because self-pollination was prevented a method utilized by plant breeders. It could be shown that only the control plants were normally cross-pollinated by pollen of the surrounding wild-grown tobacco plants, whereas the transgenic nicotine- and benzyl acetone-deficient lines could only produce less than half of the seeds.

The scientists measured the male fitness of the four transgenic lines by emasculating flowers of plants and subsequently determining the origin of pollen which had fertilized their seeds with DNA probes. This paternity test allowed scientists to identify which of the transgenic plant lines were most successful at passing their pollen along to neighboring plants. Here it could also be shown that the control plants producing natural amounts of nicotine and benzyl acetone were the most potent ones; the big losers (almost five times less of cross-fertilized seeds) were the plants that produced neither nicotine nor benzyl acetone.

Interestingly, during the growing season, the male fertilization success switched from the attractant (benzyl acetone)-deficient to the nicotine-deficient plants. In other words: The influence of nicotine in the nectar on successful pollinator-mediated fertilization of tobacco plants decreased continuously, whereas the attractant became more and more important. These measurements were confirmed by video recordings which showed that early in the year, when hummingbirds visit tobacco, nicotine in the nectar causes them to drink less of the bitter nectar, and in turn visit other flowers, thus increasing pollen transfer. Later in the year, moths visit frequently, attracted by the odor of benzyl acetone. The bitter
'/>"/>

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:12/10/2014)... , Dec. 9, 2014  Wake Forest Baptist Medical Center ... for its School of Medicine. Funding for this $50 ... campaign that will be publicly launched next summer. ... in the former 60 series R.J. Reynolds Tobacco Company ... Construction will begin immediately with plans to be ready ...
(Date:12/10/2014)... , Dec. 08, 2014 Research and Markets ... addition of the "Biometrics Market in Japan ... http://photos.prnewswire.com/prnh/20130307/600769 The ... such as rural banking and upgradation of the ... witnessed in the market. Besides the aforementioned projects, ...
(Date:12/5/2014)... 4, 2014 Increased emphasis on product ... new testing and inspection technologies. The convergence of ... a range of innovative test solutions. This trend ... Y, which is generally more inclined towards communication, ... development strategies of test equipment vendors will cater ...
Breaking Biology News(10 mins):Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Biometrics Market in Japan 2014-2018: Key Vendors are DDS, Fujitsu, Hitachi and NEC 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4
... at the University of Liverpool have discovered that the ... million years old and took its present shape about ... in collaboration with the University of Amsterdam and Petrobras, ... taken from two boreholes near the mouth of the ...
... well-fed, clonal organisms in the Caribbean Sea as the ... Pacific, report researchers from the Smithsonian Tropical Research Institute ... shows that if a species could shift from clonal ... for extinction, millions of years later. Closure of the ...
... A study conducted by researchers at Ben-Gurion University of the ... indicates that approximately 16 percent of public health care workers ... regardless of the severity. The study,just published in the ... 1,835 public health workers in Minnesota, Ohio and West Virginia ...
Cached Biology News:Sex in the Caribbean: Environmental change drives evolutionary change -- eventually 21 in 6 health workers won't report in flu pandemic -- study by Ben-Gurion U. researchers 21 in 6 health workers won't report in flu pandemic -- study by Ben-Gurion U. researchers 3
(Date:12/24/2014)... 23, 2014 Pipette.com announces their ... followers can submit their #HolidayInTheLab pictures for a chance ... mates. , For those struggling to think of a ... Holiday in the Lab Contest provides the ideal holiday ... to send pictures of their chemistree, holiday sweaters, ...
(Date:12/24/2014)... Dec. 23, 2014 Sigma-Aldrich Corporation (NASDAQ: ... waiting period under the Hart-Scott-Rodino Antitrust Improvements Act ... on December 22, 2014, thereby completing the U.S. ... the acquisition of the Company by Merck KGaA, ... satisfies another condition to closing the transaction, which ...
(Date:12/22/2014)... , Dec. 22, 2014   Synthetic ... developer of pathogen-specific therapies for serious infections ... the microbiome, today announced positive topline safety ... clinical trial of SYN-004, the Company,s investigational ... Clostridium difficile (C. difficile) infection, ...
(Date:12/22/2014)... , Dec. 22, 2014  ( www.competitivehealth.com ) ... an online medical bill review and advocacy service, has ... the FREE WellCard Savings discount health services marketplace. ... that was more than they expected to pay. As ... health care costs, WellCard Savings is pleased to offer ...
Breaking Biology Technology:Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 2Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 4Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 5WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2
... , LAUSANNE, Switzerland and ... Swiss-based global biopharmaceutical group,of companies with a focus ... medical needs, and MSM Protein Technologies (MSM), a ... in targeting,multi-spanning membrane proteins, announce the signature of ...
... ... standard gas stick that can be shipped from stock greatly minimizing lead times for ... ... based firm specializing in process controls for the delivery of critical fluids, introduces an ...
... class of economically viable solar power cellscheap, flexible and ... as a result of recent work* at the National ... deepened their understanding of the complex organic films at ... rely on organic molecules to capture sunlight and convert ...
Cached Biology Technology:Debiopharm and MSM Protein Technologies Sign Agreement for Research and Development of Debio 0929, a Novel Oncology Biologic 2Debiopharm and MSM Protein Technologies Sign Agreement for Research and Development of Debio 0929, a Novel Oncology Biologic 3Debiopharm and MSM Protein Technologies Sign Agreement for Research and Development of Debio 0929, a Novel Oncology Biologic 4Aztech Controls Introduces Standardized Gas Sticks for Semiconductor Tool Hook Up 2Aztech Controls Introduces Standardized Gas Sticks for Semiconductor Tool Hook Up 3NIST scientists study how to stack the deck for organic solar power 2
... Molecular Imaging's proprietary Focus™ detector technology, while ... the R4. The microPET Focus 120 ... avaiable PET scanner. Focus scanners also ... scinitallor based PETsystems. The combination of ...
... The Freedom EVO series offers versatile ... to successfully automate a wide variety of ... in four different base sizes (75, 100, ... personnel access to a platform that will ...
... This product has been developed to significantly ... labeled proteins. Stability is increased at ... 2-8 centigrade. This product is subjected ... mercury or azide. This formulation insures ...
... The StatMatic I provides a convenient and ... culture work. Used with an eight-port disposable ... not possible with multi-channel pipettes. The eight-port ... in volumes of 100, 200, 250, or ...
Biology Products: