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:5/7/2015)... 7, 2015 Fingerprint Cards ... and FPC1035, FPC,s smallest touch fingerprint sensors to ... considered for integration on the backside of the ... increased possibilities to integrate touch fingerprint sensors in ... improves possibilities for module manufacturers to customize the ...
(Date:4/27/2015)... -- For more than four decades, AUVSI,s Unmanned Systems ... worldwide event for the unmanned land, sea, and air ... any local, national, or trade news organization interested in ... current applications of unmanned technologies. The conference will explore ... industry, and how it will soon impact the lives ...
(Date:4/21/2015)... , April 21, 2015 ... evolving government policies are boosting access control systems market ... According to a recently published report by TechSci ... 2020 ", the access control systems market in ... USD1.2 billion by 2020.The access control systems market in ...
Breaking Biology News(10 mins):FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5Saudi 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 3
... When a pathogen attacks a plant, infection usually follows ... of researchers at the University of California, Riverside focused on ... of the 19 th century by infecting potato plants, ... system. The genus Phytophthora contains many notorious ...
... As fibers go, there,s never been anything quite like spider silk. ... holds up. It is five times stronger than steel and can ... right back like new. Ounce-for-ounce spider silk is even stronger than ... be understandable to think that science knows all there is to ...
... needs to eat. But it,s a dog-eat-dog world, and with ... To cope with this vicious reality, a tiny insect that ... physical protection from its beetle predator. The pest ... numerous countries in recent years has caused immeasurable loss of ...
Cached Biology News:Scientists identify genetic mechanism that contributed to Irish Famine 2Scientists identify genetic mechanism that contributed to Irish Famine 3Stanford researcher sheds new light on the mysteries of spider silk 2Stanford researcher sheds new light on the mysteries of spider silk 3Stanford researcher sheds new light on the mysteries of spider silk 4Pest uses plant hairs for protection 2
(Date:5/29/2015)... Gatos, CA (PRWEB) May 29, 2015 ... company addressing multi-drug-resistant organisms (MDROs), announced that initial ... for same-shift bacterial detection and susceptibility testing from ... asm2015 on May 31, 2015 in New ... new class of molecular diagnostics that can quickly ...
(Date:5/29/2015)... , May 29, 2015 Delcath Systems, ... and medical device company focused on oncology with ... metastatic liver cancers, announces that results of a ... uveal melanoma patients with hepatic metastases with the ... highlighted in an on-line abstract at the American ...
(Date:5/29/2015)... Research and Markets ( http://www.researchandmarkets.com/research/7bf7ff/cytogenetics ) ... report "Cytogenetics - Technologies, Markets and Companies" ... deals with cytogenetics in a broader sense rather ... chromosome structure and identify abnormalities related to disease. ... also referred to as molecular cytogenetics. The scope ...
(Date:5/29/2015)... (PRWEB) May 29, 2015 Translation is frequently ... is for a good reason--if used in a way that ... the offering of a business product or service offering. ... can have a positive effect on a company's bottom line: ... that anyone in the world can use, why not offer ...
Breaking Biology Technology:Data Highlighting GeneWEAVE’s Smarticles™ Technology to be Presented at the 115th General Meeting of the American Society for Microbiology (asm2015) 2Data Highlighting GeneWEAVE’s Smarticles™ Technology to be Presented at the 115th General Meeting of the American Society for Microbiology (asm2015) 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 4Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 5Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 2Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 3Three Ways Translation Can Help Businesses Grow 2
... and OTTAWA, Nov. 20 Sports and,nutritional product ... http://www.naturalnutritioninc.com announced today that it has,launched an ... Lightning Pain Relief Cream. Made from a combination ... be marketed,on the internet and television. Natural ...
... Spheris to be the First Provider of Clinical Documentation Technology, ... ... Tenn., Nov. 20 Spheris has been selected as,the first ... of the nation,s leading group purchasing organizations.,Under the parties, agreement, ...
... CRY ),a biomaterials, medical device and tissue processing company, ... 19th Annual Piper Jaffray,Health Care Conference at the Pierre ... Steven G. Anderson, president and CEO of CryoLife, ... p.m. EST. CryoLife,s live presentation may be accessed ...
Cached Biology Technology:Natural Nutrition Launches International Marketing Campaign for New All Natural Analgesic: BLUE LIGHTNING(TM) Fast Pain Relief 2Provista Awards Agreement to Spheris 2CryoLife to Present at 19th Annual Piper Jaffray Health Care Conference in New York 2
Anti-Conjugated Quinaldic Acid...
... stain kits are optimized for use ... Dodeca stainers. This silver stain kit ... in polyacrylamide gels and are mass ... concentrate, silver reagent concentrate, background reducer ...
The AVR9-8 stream-select valve is a 9-port, 8-position valve for use with the BioLogic DuoFlow system. This valve is used for high-pressure stream selection....
... Miscellaneous: Versatile stain for staining RNA (bluish-purple), DNA (blue), ... TLC ≥ 90 % Cation traces: Ca ≤ ... mg/kg Cr ≤ 5 mg/kg Cu ≤ 5 mg/kg ... ≤ 5 mg/kg Mn ≤ 5 mg/kg Na ≤ ...
Biology Products: