Navigation Links
University of Florida study provides insight into evolution of first flowers
Date:5/18/2009

ares the genetic structure of two vastly different flowering plants to see whether differences exist in the set of circuits that create each species' flower. Researchers examined the genetic circuitry of Arabidopsis thaliana, a small flowering plant commonly used as a model organism in plant genetics research, and the avocado tree Persea americana, which belongs to an older lineage of so-called basal angiosperms.

"What we found is that the flower of Persea is a genetic fossil, still carrying genetic instructions that would have allowed for the transformation of cones into flowers," Chanderbali said.

Advanced angiosperms have four organ types: female organs (carpels), male organs (stamens), petals (typically colorful) and sepals (typically green). Basal angiosperms have three: carpels, stamens and tepals, which are typically petal-like structures. The researchers expected each type of organ found in Persea's flowers would have a unique set of genetic instructions. Instead they found significant overlap among the three organ types.

"Although the organs are developing to ultimately become different things, from a genetic developmental perspective, they share much more than you would expect," Chanderbali said. "As you go back in time, the borders fade to a blur."

"With these facts established, we can now think about the vast space open to natural selection to establish ever more rigid borders," said Virginia Walbot, a biology professor at Stanford University who is familiar with the research. The selection process arrived at a "narrow solution in terms of four discrete organs but with fantastic diversity of organ numbers, shapes and colors that provide the defining phenotypes of each flowering plant species."

Researchers don't know exactly which gymnosperms gave rise to flowering plants, but previous research suggests some genetic program in the gymnosperms was modified to make the first flower, Soltis said. A pine tree pro
'/>"/>

Contact: Andre Chanderbali
achander@botany.ufl.edu
352-273-1976
University of Florida
Source:Eurekalert

2

GOOD

Page: 1 2 3

Related biology news :

1. A study by the MUHC and McGill University opens a new door to understanding cancer
2. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
3. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
4. Bioengineers at University of Pennsylvania devise nanoscale system to measure cellular forces
5. Binghamton University researchers investigate evolving malaria resistance
6. Antioxidant to retard wrinkles discovered by Hebrew University researcher
7. Society for General Microbiology 161st Meeting, University of Edinburgh
8. Boston University biomedical engineers find chink in bacterias armor
9. KAUST and American University in Cairo to collaborate on research and academic development
10. UNH becomes first university in nation to use landfill gas as primary energy source
11. University of Minnesota study refutes belief that black men have more aggressive prostate cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/18/2013)... Bethesda, MD (May 19, 2013) The AGA Research ... Augustyn and Damian Augustyn Award in Digestive Cancer, which ... School of Medicine at the University of Pennsylvania, Philadelphia, ... Zeb1 in pancreas development, regeneration and cancer progression. , ... award in honor of two distinguished clinicians and AGA ...
(Date:5/17/2013)... noise of the South, but the night belongs to the ... heavy from the humidity and the sounds of wildlife. ... frogs, toads and salamanders, is the center of amphibian biodiversity ... the auditorium for their symphonic choruses, the scientists of the ... have front-row seats. , Amphibians, which rely on ...
(Date:5/17/2013)... and Sustainable Global Logistics Operations) is aiming to cut ... of intermodal loading systems and the boosting of intelligent ... organisations with experience in the logistics sector and in ... and a duration of three and a half years. ... semantic components and ontologies shared by the users, objects ...
Breaking Biology News(10 mins):AGA Research Foundation grant furthers digestive cancer research 2Front-row seats to climate change 2Front-row seats to climate change 3Front-row seats to climate change 4New logistics services that will cut energy consumption and CO2 emissions 2
... , PARIS , Feb. 4 ... Eurofins Scientific, a global leader in bio-analysis. , Under a ... connect 16 key Eurofins laboratories and research centers in ... company,s global customer base.  Verizon will use MPLS (multi-protocol label ...
... Toronto chemists have made a major contribution to the emerging ... photosynthesis in marine algae. "There,s been a lot of ... practices," says chemistry professor Greg Scholes, lead author of a ... "Our latest experiments show that normally functioning biological systems have ...
... College of Georgia researchers are seeking to refine cancer ... Chinese medicine. Celastrol, derived from trees and shrubs ... to treat symptoms such as fever, chills, joint pain ... play a role in cancer treatment by inactivating a ...
Cached Biology News:Verizon Business to Provide Global IP for Eurofins Scientific 2Verizon Business to Provide Global IP for Eurofins Scientific 3Scientists find quantum mechanics at work in photosynthesis 2Plant derivative could help refine cancer treatment 2
(Date:5/17/2013)... May 17, 2013 - Elsevier, a world-leading provider of ... announced the publication of a recent study in ... human blastocysts showing that those with an abnormal chromosomal ... they have developed to blastocysts, thereby classifying the risk ... study the same group has undertaken a retrospective study, ...
(Date:5/17/2013)... ALTO, Calif. , May 17, 2013 /PRNewswire/ ... it has achieved 50% enrollment of the total ... to evaluate the safety and preliminary efficacy of ... Cells) therapy for Knee Osteoarthritis (KOA). To date ... (SAE) reported. The Phase I open ...
(Date:5/17/2013)... (PRWEB) May 17, 2013 Men’s skin is ... La-roche Posay ) and has been known to react ... some men may be far from puberty, other acne causing ... pores, causing breakouts, and threatening skin with unsightly acne scars. ... from Men’s Health on how to reduce and ...
(Date:5/17/2013)... CA (PRWEB) May 17, 2013 IAC Industries ... Technologies, a start up laboratory needing to set up and ... moving to a larger facility within a year’s time. How ... knowledge that the laboratory is temporary? What is efficient and ... Series modular workstations from IAC Industries. The planners at DisperSol ...
Breaking Biology Technology:Breakthrough for IVF? 2Breakthrough for IVF? 3Cellular Biomedicine Group Achieves 50% Enrollment Milestone in Phase I Clinical Trial for Knee Osteoarthritis 2Adult Acne Treatment, Probiotic Action Shares New Insight on Why Men’s Skin Scars from Acne and How to Prevent It 2New Downloadable Success Story: “How To Outfit a Dynamic Lab in Flux” 2
... GBS and EV Expand GeneXpert(R) Test Menu in ... Cepheid (Nasdaq:,CPHD) today announced that Health Canada ... the rapid detection of Group B Streptococcus (GBS),and ... EV-associated,meningitis. These tests join Xpert MRSA, which received ...
... 3 American Oriental,Bioengineering (NYSE: AOB ) ... private,offer, subject to market conditions and other factors, ... of newly,issued convertible preferred stock. The convertible preferred ... arrears, and will be,convertible upon the occurrence of ...
... 3, 2008, TIME: 9:30 ... Dr. Candace Kendle, Chairman and CEO Kendle (Nasdaq: KNDL ... June 3 at 9:30 a.m. Eastern Time to,discuss the acquisition of ... provide an update on second quarter,progress. A question and answer session ...
Cached Biology Technology:Cepheid Market Reach Extended with Licenses in Canada and Registrations in Mexico 2Cepheid Market Reach Extended with Licenses in Canada and Registrations in Mexico 3Cepheid Market Reach Extended with Licenses in Canada and Registrations in Mexico 4American Oriental Bioengineering Announces Proposed Private Offering to Raise $125 Million via Convertible Preferred Stock 2Kendle to Host Conference Call and Webcast to Discuss DecisionLine Acquisition and Provide Update on Second Quarter Progress 2
Allophycocyanin (APC) anti-human CD193 (CCR3, CKR3) 25 tests...
Mouse monoclonal [YLI-90] to Ly49I (Biotin) ( Abpromise for all tested applications)....
Goat polyclonal to PPP2R5D Immunogen: Peptide with sequence KRAEEFLTASQEAL, from C Terminus of the protein sequence according to NP_006236...
Rabbit polyclonal to KIAA1276 ( Abpromise for all tested applications). entrezGeneID: 27146 SwissProtID: Q9ULE4...
Biology Products: