Navigation Links
For certain orchids, relatives more important than pollinators in shaping floral attractants
Date:10/26/2011

Bees, bats, and moths all follow their noses in search of food from flowers. Plants that rely on such animals for pollination often produce particular chemical scents that attract specific pollinators. However, the ability to produce certain chemicals is also determined by a plant's genetics, or phylogenetic history, which can potentially limit its ability to respond to pollinator pressures. So which is more important in the evolution of floral scents: pollinator-induced natural selection or phylogenetic constraints?

While pollinators are often thought to be the driving force behind the type of chemicals plants produce to attract them, no matter how closely related the plants are to each other, a new study by Kim Steiner and colleagues published in the October issue of the American Journal of Botany (http://www.amjbot.org/content/98/10/1663.full) reveals that phylogeny may be more important than pollinators in determining floral scent characteristics in a group of specialized South African orchids.

"The evolution of any plant or animal character, be it morphological or something as seemingly intangible as a floral scent composed of many specific compounds, is a product of the balancing forces of natural selection and phylogenetic constraint," notes Steiner (University of Kwazulu-Natal, Pietermaritzburg, South Africa).

"While the results of natural selection, or pollinator-mediated selection, generally produce the most fascinating examples of evolution -- such as the extraordinarily long spurs of the Angraecum orchid (Darwin's orchid) and the equally extraordinarily long proboscis of its hawkmoth pollinator -- many characteristics are shared between closely related species simply as the result of their common ancestry, and it is important to be aware that this common ancestry can have a strong influence on the outcome of natural selection," Steiner says.


'/>"/>
Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. St. Jude identifies genomic causes of a certain type of leukemia relapse
2. UCSB scientists show how certain vegetables combat cancer
3. Dealing with taxonomic uncertainty for threatened and endangered species
4. Study unravels why certain fishes went extinct 65 million years ago
5. New evidence explains poor infant immune response to certain vaccines, says MU researcher
6. Shellfish face an uncertain future in a high CO2 world
7. MSU discoveries upend traditional thinking about how plants make certain compounds
8. Mango effective in preventing, stopping certain colon, breast cancer cells
9. Ongoing human evolution could explain recent rise in certain disorders
10. Consumption of certain fish during pregnancy associated with poorer cognitive performance
11. Long-term use of certain contraception injections associated with increased fracture risk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
For certain orchids, relatives more important than pollinators in shaping floral attractants
(Date:9/18/2014)... celebrated tonight at the third annual Golden Goose Award ... premature infants and in paving the way for the ... supported by the National Science Foundation, the National Institutes ... be honored at a ceremony at the Library of ... of Congress will be on hand to help present ...
(Date:9/18/2014)... of the fish world, are the ideal animal in ... They,ve moved from the ocean into tens of thousands ... time changing their skeleton to adapt to the new ... of sticklebacks now have turned up one of the ... simple change in that gene,s regulation in a freshwater ...
(Date:9/17/2014)... were instrumental in the creation of the Santa Ana ... the fire threat potential of the powerful, hot, dry ... an inferno. The index was introduced Sept. 17 by ... San Diego Gas and Electric. , The index includes ... will be used to help fire agencies and other ...
Breaking Biology News(10 mins):3rd annual Golden Goose award ceremony honors 8 researchers; Unusual work had big results 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 3UCLA scientists play key role in developing new Santa Ana Wildfire Threat Index 2
... 15, 2011 -- Sing it with us: What lives in the ... new species of mushroom almost as strange as its cartoon namesake. ... Francisco State University researcher Dennis Desjardin, suggests that even some of ... be identified. Shaped like a sea sponge, S. squarepantsii ...
... research papers that have been recently published in ... (GRL), Journal of Geophysical Research-Atmospheres (JGR-D), ... Geophysical Research-Oceans (JGR-C). In this release:, ... Surge in North Atlantic hurricanes due to better detectors, ...
... press conference on Monday 11 July at University of Edinburgh ... the world meet next month in Edinburgh (11-15 July) to ... the first time in over 20 years, the Scientific Committee ... Symposium of Antarctic Earth Sciences (ISAES) in the UK. ...
Cached Biology News:'SpongeBob' mushroom discovered in the forests of Borneo 2'SpongeBob' mushroom discovered in the forests of Borneo 3AGU journal highlights -- June 15, 2011 2AGU journal highlights -- June 15, 2011 3AGU journal highlights -- June 15, 2011 4AGU journal highlights -- June 15, 2011 5AGU journal highlights -- June 15, 2011 6AGU journal highlights -- June 15, 2011 7AGU journal highlights -- June 15, 2011 8AGU journal highlights -- June 15, 2011 9AGU journal highlights -- June 15, 2011 10AGU journal highlights -- June 15, 2011 11AGU journal highlights -- June 15, 2011 12
(Date:9/18/2014)... LOUIS , Sept. 18, 2014  U.S. biotech ... by signing an exclusive license for technology developed by ... control gene expression in plants, including for applications in ... The technology was developed under the ... officer at Kultevat and former president of the Danforth ...
(Date:9/18/2014)...  Neogen Corporation (Nasdaq: NEOG ) announced ... with Merck Animal Health to market Neogen,s Igenity ® ... Dairy Heifer Program consists of genomic tests that offer ... of replacement dairy heifers. The genomic tests can be ... an excellent tool in the decision-making process for breeding ...
(Date:9/18/2014)... YARDLEY , Pennsylvanie, 18 septembre 2014 ... Lyon en 1974, a été ... à compléter les évaluations cliniques traditionnelles par ... Reported Outcomes) et sur les impacts économiques ... http://photos.prnewswire.com/prnh/20140618/119365 A cours ...
(Date:9/18/2014)... OMICS Group International invites researchers, authors and ... ‘Open Access Week’ by actively contributing their research ... Journals from 20-26th October, 2014. , Pharmaceutical ... accelerating with a tremendous speed to provide improved ... industry is gearing with innovation and technological revolution ...
Breaking Biology Technology:Kultevat obtains license of gene switch technology 2Merck Animal Health to market Neogen's dairy genomic program 21974 - 2014 - Mapi fête ses 40 ans 2Pharma and Omics Journals to Address Global Challenges during Open Access Week 2Pharma and Omics Journals to Address Global Challenges during Open Access Week 3
... University of Wisconsin-Madison faculty have created a new dual-degree ... students how to apply such knowledge to problems in ... and aggression," says Clark Miller, a professor of science ... the new program. "Or what about brain mechanisms that ...
... agricultural equipment manufacturer Gehl Co. has developed a ... boom functions using a compact, wireless remote control pendant from ... The hand-held pendant can be used to raise, lower, extend ... , ,"Our goal was to add a new dimension ...
... -- Thomas Record, a biophysical chemist at the University ... Society Fellows by the Biophysical Society, a 7,000-member U.S. ... professor of chemistry and biochemistry, Record hopes that the ... students and extramural funding for his research. , ,A ...
Cached Biology Technology:UW offers new program in neuroscience and public policy 2
...
Agarose for baculovirus plaque assays which allow optimal growth of plated insect cells....
BD BaculoGold Max-XP Insect Cell Medium 1 Liter...
Mycoplasma and virus tested...
Biology Products: