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

o understand the floral biochemistry and plants' ecological interactions with their mobile visitors, the researchers generated four different lines of genetically modified wild tobacco (Nicotiana attenuata). Apart from control plants that had received only a blind copy of the transgenic DNA fragment, transgenic lines were created (by means of RNA interference) that were unable to produce either nicotine or benzyl acetone; the latter has a sweet odor we know from cocoa beans and is similar to the smell of jasmine and strawberry. A fourth line of transgenic plants could produce neither nicotine nor benzyl acetone.

After a series of control experiments in the field showed that the genetic modifications per se did not influence growth, flower formation, nectar production, or the frequency of outcrossing, the scientists ran a series of three tests: First, measurements of floral nectar showed that its volume was only half the size in transgenic plants which were impaired in nicotine production, compared to control plants and the lines that could not produce benzyl acetone as an attractant. Conclusion: Floral visitors are principally attracted by the scent, and they drink more nectar if it doesn't taste bitter. Using video cameras, the researchers confirmed this result: Both attractant-deficient lines were rarely visited by hummingbirds (e.g. Archilochus alexandri) and white-lined sphinx moths (Hyles lineata). When visitors took nectar from flowers which contained a natural amount of deterring nicotine, they stayed for a short time only, while they enjoyed the nicotine-free nectar of corresponding transgenic lines. Consequently, these flowers were visited for longer periods, especially by hummingbirds.

However, such observations do not prove that different visiting behaviors affect outcrossing and reproduction among plants. Therefore, two further analyses were performed, one focused on female fitness (production rate of seeds in the
'/>"/>

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:4/21/2015)... 2015 High crime rate, ... boosting access control systems market in Saudi ... recently published report by TechSci Research " Saudi Arabia Access ... control systems market in Saudi Arabia ... access control systems market in the Kingdom is growing ...
(Date:4/17/2015)... 2015 Increasing adoption ... advancement to drive biometric systems market in ... According to a recently released TechSci ... ", biometric systems market in Saudi ... at CAGR of over 22% through 2020. The ...
(Date:4/13/2015)... 13, 2015 According to ... Biometrics Market Forecast & Opportunities, 2020", the global biometrics ... around 14% till 2020. The biometrics market is ... implementation and review of biometric management systems. The ... products with greater efficiency, are resulting in increasing ...
Breaking Biology News(10 mins):Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2
... from the ARC Centre of Excellence for Coral Reef ... science to help solve some of the world,s biggest ... science fellow at the ARC CoECRS, holds a joint ... University in the USA. Dr Hicks says more ...
... WEST LAFAYETTE, Ind. Researchers have discovered a tube-shaped structure ... deliver its DNA during the infection process and then dissolves ... mechanism in the phiX174 virus, which attacks E. coli ... bacteria, is in a class of viruses that do not ...
... by scientists could help combat the spread of sleeping sickness. ... to communicate with one another could help limit the spread of ... could be designed to disrupt the flow of messages sent between ... disrupts sleep patterns is transmitted by the bite of the ...
Cached Biology News:Linking social science and ecology to solve the world's environmental problems 2Virus grows tube to insert DNA during infection then sheds it 2
(Date:5/26/2015)... 26, 2015 WORMS, GERMANY – ... Co. (NYSE: GRA) announces that its manufacturing facility ... (GMP) certification from EXCiPACT™, an independent organization that ... , All three Grace facilities that ... excipient silica gels have now received GMP certification, ...
(Date:5/26/2015)... , Kalifornien und HILDEN, Deutschland, May ... QIAGEN Clinical Insight ® ... Genvarianten und die Erstellung dazugehöriger Berichte; Vorstellung ...     QIAGEN N.V. (NASDAQ: ... heute die Markteinführung von QIAGEN Clinical Insight ...
(Date:5/26/2015)... 2015  Sangamo BioSciences, Inc. (NASDAQ: SGMO ) announced ... will provide an update on the progress of Sangamo,s ZFP ... company,s business strategy at 1:30pm ET on Monday, June 1, ... is being held in New York, NY ... may be accessed via a link on the Sangamo BioSciences ...
(Date:5/26/2015)... , May 26, 2015  Alere Inc. (NYSE: ALR ... its failure to timely file its Quarterly Report on Form ... "Form 10-Q"), it has received a notice from the New ... in compliance with the NYSE,s continued listing requirements under the ... Listed Company Manual. The reason for the ...
Breaking Biology Technology:CORRECTION: Grace European Facility Receives GMP Excipient Certification for SYLOID® FP Silica Gel 2QIAGEN bringt klinische Bioinformatik-Plattform für Next Generation Sequencing-Anwendungen auf den Markt 2QIAGEN bringt klinische Bioinformatik-Plattform für Next Generation Sequencing-Anwendungen auf den Markt 3QIAGEN bringt klinische Bioinformatik-Plattform für Next Generation Sequencing-Anwendungen auf den Markt 4QIAGEN bringt klinische Bioinformatik-Plattform für Next Generation Sequencing-Anwendungen auf den Markt 5QIAGEN bringt klinische Bioinformatik-Plattform für Next Generation Sequencing-Anwendungen auf den Markt 6Sangamo BioSciences Announces Presentation At The Jefferies 2015 Global Healthcare Conference 2
... , NEW HAVEN, Conn., Sept. ... discovery, development and commercialization of novel drugs for the treatment ... been appointed to the Company,s Board of Directors, succeeding Joseph ... Zook is President of MedImmune, Chief Executive Officer of AstraZeneca ...
... , CHENGDU, China, Sept. ... TPI ), a manufacturer and supplier ... its new,production facility obtained the Good Manufacturing Practices ... Food and Drug,Administration ("SFDA") in China. , ...
... VIENNA, Va., Sept. 16 CEL-SCI Corporation ... and therapeutics for the prevention and treatment of infectious diseases ... Food and Drug Administration (FDA) has indicated that the Company ... effect of its investigational LEAPS-H1N1 treatment on the white blood ...
Cached Biology Technology:Rib-X Pharmaceuticals, Inc. Appoints Tony Zook of MedImmune to Board of Directors 2Rib-X Pharmaceuticals, Inc. Appoints Tony Zook of MedImmune to Board of Directors 3Tianyin Pharmaceutical Co., Inc. Obtains GMP Certification for Its New Production Facility 2Tianyin Pharmaceutical Co., Inc. Obtains GMP Certification for Its New Production Facility 3CEL-SCI to Commence First Clinical Study with Hospitalized H1N1 Infected Patients 2CEL-SCI to Commence First Clinical Study with Hospitalized H1N1 Infected Patients 3CEL-SCI to Commence First Clinical Study with Hospitalized H1N1 Infected Patients 4
Guanine nucleotide-binding protein G(k), alpha subunit...
Goat anti-VAV2 Class: Antibody Product Group: Miscellaneous Antibody...
... P7 D7 F5] to RYK ( ... Antigen: Synthetic ... to amino acids 462 - 475 ... Gene ID: 6259 ...
DAP12 Market Segment: Protein Kinases...
Biology Products: