Navigation Links
Don't be fooled: Flowers mislead traditional taxonomy
Date:3/4/2013

rue papilionate flowers, Vatairea and Vataireopsis.

To understand the taxonomy and relationships of Luetzelburgia and its relatives, Cardoso set out to examine herbarium specimens and collect new specimens from across the geographic range of the genera. One challenge: the only previous taxonomic study of Luetzelburgia was published in Russian! Once the bibliographies were translated, another challenge arose: these legume genera extend over much of South America, with specimens from very different biomes often identified as the same species in herbaria. In 15 days, Cardoso and two friends drove about 5000 miles from northeastern Argentina to the Bolivian Chiquitano dry forest and the Andean Altiplano in La Paz. This field and herbarium research confirmed two new species of Luetzelburgia in Bolivia.

Despite their striking differences in flower shape, Luetzelburgia, Sweetia, Vatairea, and Vataireopsis turned out to be close relatives. Moreover, the two genera with papilionate flowers were not each other's closest relatives. According to Cardoso, "We showed that similarity in floral morphology does not predict phylogenetic relatedness. Indeed, genera with very different flower shapes are often very closely related (Luetzelburgia and Vatairea), and genera with highly similar flowers share such similarity via convergent evolution (Vatairea and Vataireopsis)."

For these plants, other morphological characteristics may indicate relationships more reliably. "Floral traits are apparently more prone to rapid evolutionary changes in response to local ecological conditions," Cardoso said, "whereas vegetative and fruiting traits are more conserved and not readily shaped by local conditions."

Taxonomists beware: the flowers might just be fooling us.


'/>"/>

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

Page: 1 2

Related biology news :

1. Quick detection of periodontitis pathogens
2. In the Eastern US, spring flowers keep pace with warming climate
3. Insect-eating bat outperforms nectar specialist as pollinator of cactus flowers
4. High-speed video and artificial flowers shed light on mysteries of hummingbird-pollinated flowers
5. Scientists discover switch in plants to create flowers
6. Traditional fisheries management approach jeopardizes marine ecosystems worldwide
7. By adding VSL#3 probiotic to traditional therapies UC patients can improve remission rates
8. Pain relief with PAP injections may last 100 times longer than a traditional acupuncture treatment
9. Some improved cookstoves may emit more pollution than traditional mud cookstoves
10. The Japanese traditional therapy, honokiol, blocks key protein in inflammatory brain damage
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Don't be fooled: Flowers mislead traditional taxonomy
(Date:7/31/2014)... supported by the National Science Foundation (NSF), counters ... accelerates atmospheric warming, indicating instead that certain Arctic ... into the atmosphere. , The study, published ... focuses on thermokarst lakes, which occur as permafrost ... melted fresh water, converting what was previously frozen ...
(Date:7/31/2014)... DARIEN, IL Researchers who studied 100 twin pairs have ... function normally on less than six hours of sleep per ... resistance to the effects of sleep deprivation. , Results show ... BHLHE41 gene had an average nightly sleep duration of ... than the non-carrier twin, who slept for about six hours ...
(Date:7/31/2014)... scientists from Spain, France, and the U.S. has ... the oldest definitive member of the tribe Omaliini ... discovery and description were made possible through the ... technique, which allows the detailed study of otherwise ... is described in the journal Annals of ...
Breaking Biology News(10 mins):Certain Arctic lakes store more greenhouse gases than they release 2Study of twins discovers gene mutation linked to short sleep duration 2
... New findings from epidemiology and observational studies show ... unique demographic characteristics suggest the problem may be worse ... Latino population age, we are going to see the ... said Amelie G. Ramirez, Dr.P.H., director of the Institute ...
... , This release is available in French . ... the mechanism behind sexual mate selection has been resolved. According to ... de Montral researchers have discovered a molecular switch that becomes activated ... knows that a potential mate is close-by and healthy enough to ...
... melts into place, snugly fitting to the brain,s surface. ... monitor and control seizures, and to transmit signals from the ... implants have the potential to maximize the contact between electrodes ... They could provide a platform for a range of devices ...
Cached Biology News:Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010 2Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010 3Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010 4Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010 5Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010 6Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010 7Study reveals a mechanism for mate selection 2A brain-recording device that melts into place 2A brain-recording device that melts into place 3
(Date:7/31/2014)... 31, 2014 Today BioSpace , the leading life sciences ... campaign spotlighting the life sciences community in Illinois , ... Kansas , Michigan , Minnesota ... Ohio and Wisconsin . ... of all job postings on BioSpace originating in this region in 2013. ...
(Date:7/31/2014)... people over 60 are not donor candidates for bone ... time, making the elderly prone to life-threatening infection and ... now has discovered a reason why. , "We have ... blood-forming cells to maintain blood production over time in ... could be restored for rejuvenation therapies," said Emmanuelle Passegu, ...
(Date:7/31/2014)... see through organs and even the entire body to ... cellular structures has been a long-time dream of biologists. ... 31st in the journal Cell has now ... making opaque organs, bodies, and human tissue biopsies transparent, ... protocols could pave the way for a better understanding ...
(Date:7/31/2014)... Indiana University Bloomington have described the self-assembly of ... with potential value for the field of organic ... cells. , Their paper, "Anion-Induced Dimerization of 5-fold ... Self-Assembled Crystals," has been published online by ... Society of Chemistry. It is the first collaboration ...
Breaking Biology Technology:Midwest Biotech Leaders Featured On BioSpace Map 2Key to aging immune system is discovered 2See-through organs and bodies will accelerate biomedical discoveries 2Chemists demonstrate 'bricks-and-mortar' assembly of new molecular structures 2Chemists demonstrate 'bricks-and-mortar' assembly of new molecular structures 3
... community organizations to ... proactively get the job done, NEWARK, N.J., Aug. ... non-profit organization to utilize its,Ogiene(TM) FE technology to bring 10,000 mobile ... those families so desperately in need,of biohazard-free housing., Dr. Andy ...
... Product Safety Commission (CPSC) to carry out its mandate with ... toy trains bodes poorly for its ability to oversee the ... a new report released by the Project on Emerging Nanotechnologies ... the CPSC are being used in the Olympic Games in ...
... Fla., Aug. 21 Bioheart, Inc.,(Nasdaq: BHRT ... and,biologics that help monitor, diagnose and treat heart ... $1 million unsecured,loan from Rogers Telecommunications Limited. This ... or Bioheart,s repayment of its loan from BlueCrest,Capital. ...
Cached Biology Technology:BioNeutral Signs Agreement With a Non-profit for Long-Term Removal of Formaldehyde to Save 10,000 Mobile Homes in Louisiana 2Consumer Product Safety Commission not ready for nanotech 2Consumer Product Safety Commission not ready for nanotech 3Bioheart, Inc. Announces Additional Funding Support 2Bioheart, Inc. Announces Additional Funding Support 3Bioheart, Inc. Announces Additional Funding Support 4
... Library Panels were designed for full-length gene ... PCRs to identify the desired cDNA clone. ... a 96-well "Master Plate," where each well ... identified the positive well(s) by gel electrophoresis ...
... The DSQ II (Dual-Stage Quadrupole) ... the world leader in analytical instrumentation, introduces ... the DSQ II. Based on the ... DSQ and PolarisQ GC/MS systems, the DSQ ...
... cDNA Library Panels were designed for full-length ... of PCRs to identify the desired cDNA ... in a 96-well "Master Plate," where each ... Having identified the positive well(s) by gel ...
... Micro Kit provides a fast and simple ... of protein samples. The kit is based ... resin as an ion exchanger. Salts such ... poor affinities for Norgens resin and are ...
Biology Products: