Navigation Links
The science of spring flowers -- how petals get their shape
Date:4/30/2013

Why do rose petals have rounded ends while their leaves are more pointed?

In a study to be published in open access journal PLOS Biology, John Innes Centre and University of East Anglia scientists reveal that the shape of petals and leaves is controlled by a hidden map located within growing buds.

The map features arrows that direct the growth of each cell in the bud. In a leaf, the pattern of arrows converges towards the tip of the bud leading to a pointy shape, while in a petal the pattern of arrows fans out leading to a more rounded shape.

The arrows correspond to molecules, called PIN proteins, located towards the ends of each cell.

"The discovery of these hidden polarity maps was a real surprise and provides a simple explanation for how different shapes can be generated," said Professor Enrico Coen.

The researchers uncovered the hidden maps by studying the way petals and leaves grow in the model plant Arabidopsis.

They confirmed their ideas through computer simulations and by modifying the PIN molecules so that they glow under the microscope, making them easier to see. The also showed that petal growth is controlled by a gene called JAGGED located in a particular region of the map that interacts with its pattern of arrows.

In evolution, the system creates the flexibility needed for organs to adapt to their environment and to develop different functions.

Leaves and petals perform different functions suited to their shape. Leaves acquire sugars for a plant via photosynthesis, which can then be transported throughout the plant. Petals develop later in the life cycle and help attract pollinators.


'/>"/>

Contact: Zoe Dunford
zoe.dunford@nbi.ac.uk
07-768-164-185
Norwich BioScience Institutes
Source:Eurekalert

Page: 1

Related biology news :

1. 3 NYU faculty elected to National Academy of Sciences
2. Carnegies Greg Asner elected to National Academy of Sciences
3. Geosphere features top geoscience technology, including LiDAR, EarthScope, CHIRP, ALSM, and IODP
4. Science surprise: Toxic protein made in unusual way may explain brain disorder
5. Inaugural IOF Olof Johnell Science Award presented to Professor Harry Genant
6. North Carolina Natural Heritage Program earns 2013 Award for Science and Technical Achievement
7. Inter-American Network of Science Academies celebrates women scientists -- April 17 event
8. Reliability of neuroscience research questioned
9. Registration Now Open for Elite Life Science Career Fair
10. PeerJ launches PeerJ PrePrints -- a preprint server for the biological and medical sciences
11. Submissions now being accepted for new behavioral sciences section in JoVE
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2016)... , June 22, 2016 On Monday, ... call to industry to share solutions for the Biometric ... U.S. Customs and Border Protection (CBP), explains that CBP ... are departing the United States , ... and to defeat imposters. Logo - ...
(Date:6/16/2016)... SAN FRANCISCO , June 16, 2016 /PRNewswire/ ... Market size is expected to reach USD ... report by Grand View Research, Inc. Technological proliferation ... and banking applications are expected to drive the ... ) , The development of ...
(Date:6/9/2016)... 2016 Paris Police Prefecture ... security solution to ensure the safety of people and operations ... the major tournament Teleste, an international technology group ... announced today that its video security solution will be utilised ... up public safety across the country. The system roll-out is ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... - BIOREM Inc. (TSX-V: BRM) ("Biorem" or "the Company") announces ... Clean Technology Fund I, LP and Clean Technology Fund ... venture capital funds which together hold approximately 59% of ... as converted basis), that they have entered into an ... in Biorem to TUS Holdings Co. Ltd. ("TUS") (en.tusholdings.com) ...
(Date:6/27/2016)... Raleigh, NC (PRWEB) , ... June 27, 2016 ... ... a mission to bring innovative medical technologies, services and solutions to the healthcare ... development and implementation of various distribution, manufacturing, sales and marketing strategies that are ...
(Date:6/24/2016)... on a range of subjects including policies, debt and investment ... Speaking at a lecture to the Canadian Economics ... the country,s inflation target, which is set by both the ... "In certain areas there needs to be frequent ... not sit down and address strategy together?" He ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” Partnering with ... in this eBook by providing practical tips, tools, and strategies for clinical researchers. ...
Breaking Biology Technology: