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:7/24/2014)... Albert Einstein College of Medicine of Yeshiva ... Fox Foundation for Parkinson,s Research to translate a basic ... drug discovery project will test chemical compounds on a ... drug that acts on an underlying cause of the ... many people manage their symptoms, we are eager to ...
(Date:7/24/2014)... low vision specialist at The University of Texas Health ... awarded a grant to help Harris County residents whose ... surgery. , Even with corrective lenses, many people with ... are a variety of low vision devices, such as ... vision loss. , Iyer is using the three-year, $164,645 ...
(Date:7/24/2014)... affect the connections between nerve cells and influence the ... of the brain that plays a significant role in ... of the study have been published in the journal ... active communication between nerve cells, known as neurons. For ... network where they constantly relay signals to one another. ...
Breaking Biology News(10 mins):Albert Einstein College of Medicine receives grant from the Michael J. Fox Foundation to fund drug discovery project targeting Parkinson's 2Albert Einstein College of Medicine receives grant from the Michael J. Fox Foundation to fund drug discovery project targeting Parkinson's 3UTHealth Dr. Bhavani Iyer awarded low vision grant 2A protein couple controls flow of information into the brain's memory center 2A protein couple controls flow of information into the brain's memory center 3A protein couple controls flow of information into the brain's memory center 4
... A detailed analysis of chromosomes 2 and 4 has ... genome and uncovered more evidence that human chromosome 2 ... researchers supported by the National Human Genome Research Institute ... reported today. , In a study published in the ...
... Patients with type 1 diabetes who received islet transplantation ... year later, according to a study in the February ... applications of biotechnology. , Type 1 diabetes remains a ... The success rate of islet (cells that produce insulin ...
... Greater Los Angeles Healthcare System conducted the largest and ... modern drugs for treating hepatitis B -- a disease ... 17 Annals of Internal Medicine, the study may help ... a degree of uncertainly exists on how to best ...
Cached Biology News:Scientists analyze chromosomes 2 and 4 2Scientists analyze chromosomes 2 and 4 3Single-donor Islet Transplantation Procedure Shows Promise For Patients With Type 1 Diabetes 2UCLA study assesses cost-effectiveness of Hepatitis B drugs 2UCLA study assesses cost-effectiveness of Hepatitis B drugs 3
(Date:7/24/2014)... , July 24, 2014 Research and ... "Global Cell Culture Market 2014-2018" report to their ... Cell culture is the in vitro growth of ... research, cell studies, and biopharmaceutical production. Cell culture is ... Cell culture instruments and cell culture consumables are necessary ...
(Date:7/24/2014)... , July 24, 2014 Research ... "Global Genomics and Proteomics Analytical Instruments Market 2014-2018" ... http://photos.prnewswire.com/prnh/20130307/600769 Genomics is the study ... the study of the structure and functions of proteomes ... bioinformatics tools and technology. Genomics involves the mapping of ...
(Date:7/24/2014)... 24, 2014 Your cell phone ... modeling lithium-ion battery storage capacity. , New research ... theoretical model created at Lawrence Livermore National ... predicts how carbon components will perform as electrodes. ... the urgent need for higher-performance batteries. Several key ...
(Date:7/24/2014)... 2014 SRI International has been awarded a ... of Allergy and Infectious Diseases (NIAID), part of the ... potential therapies for HIV infection and AIDS. The contract ... AIDS and the complications and opportunistic infections associated with ... transmission of HIV. According to the ...
Breaking Biology Technology:Global Cell Culture Market 2014-2018: Key Vendors are Becton, Dickinson and Co, EMD, GE Healthcare, Lonza Group, Sigma Aldrich and Thermo Fisher Scientific 2Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 2Getting More Life out of Lithium-ion Batteries 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 3
... Merge Technologies Incorporated , d.b.a. Merge eFilm, (Nasdaq: MRGE), ... 31, 2003. Net sales for the quarter ended March 31, ... sales of $4.5 Million in the quarter ended March 31, ... was $1,3 Million generating $0.11 diluted EPS compared to $704,000 ...
... needed a way for monitoring and three-dimensional mapping ... of cardiology systems for GE Medical Systems Information ... ability to diagnose cardiac disease and enhance patient ... studies have had to work with physically separate ...
... Medical Center (WMC), Valhalla, New York, has selected Verisis developed ... Analogic Corporation , for its new Cardiology Image and ... at WMC's George E. Reed Heart Center , one ... on the east coast. The system will also extend into ...
Cached Biology Technology:Merge has 87% Increase in Net Income 2Merge has 87% Increase in Net Income 3Merge has 87% Increase in Net Income 4NY Medical Center Selects Camtronics for Cardiovascular Image and Information Management 2
Drugs and NO-drug Rat Anti-conjugated Acetyl Salicylic Acid Polyclonal Antibody...
Applications: Beadlyte® assay Stability: 2 years at 4°C (lyophilized) or 6 months at -20°C (rehydrated) ...
... Product Mouse monoclonal [SPM278] ... Small cell lung carcinoma N592 live ... Cross-reacts with Human. Not yet tested in ... one of the major glycoproteins of basement ...
Hybridization Buffer 3.6 ml...
Biology Products: