Navigation Links
Pleasing plant shapes explained by new computer model

Flowers are innately beautiful to the human eye, but how does a sunflower achieve its stunning disc of intersecting spirals or a daisy its delicate symmetry?

That was the question tackled by University of Calgary computer scientists, who have answered one of biology's enduring questions with an animated model that provides the most detailed simulation of how plants grow into recognizable shapes.

In the article "A plausible model of phyllotaxis" published in this week's edition of the Proceedings of the National Academy of Sciences, University of Calgary PhD student Richard Smith and Computer Science professor Dr. Przemyslaw Prusinkiewicz, together with their collaborators from the Institute of Plant Science in Berne, Switzerland (Soazig Guyomarc'h, Therese Mandel, Didier Reinhardt, and professor Cris Kuhlemeier), present the first model to show how plants achieve phyllotaxis ?the unique arrangement of lateral organs around a central axis that results in the spiral patterns seen in most plants ?beginning at the molecular-level.

"Biologists have many theories about why phyllotaxis exists but have always wondered how it happens," said Smith. "This model is exciting because it proposes a mechanism that works and can be used to try and prove some of the biological theories about the growth process."

Smith and Prusinkiewicz worked with the botanists in Switzerland to create a three-dimensional simulation of plant growth at the microscopic scale, simulating cell division and showing how concentrations of the fundamental plant growth hormone auxin appear at regularly-spaced intervals. This creates the striking spiral patterns of seeds observed in sunflowers, daisies, and many other plants. Other patterns, such as branching at right angles observed in lilac branching, can be also be simulated using different parameter values.

The subject of the study was a plant called Arabidopsis, a small white-flowered plant that is to the world of b otany what the fruit fly and white mouse are to zoology.

The scientists believe their model will enhance biological experiments by providing a tool botanists can use to complement and interpret their traditional laboratory experiments. It also promises to lead to accurate models of how other organisms, including animals, develop from primordial stem cells.

"This was a great example of the synergy you can have between biology and computer science and how the tools of one discipline can be used to answer questions in another," said Prusinkiewicz, who specializes in computer simulations and visualizations in plant biology. "


'"/>

Source:University of Calgary


Related biology news :

1. Key molecule in plant photo-protection identified
2. Transplantation Of Monkey Embryonic Stem Cells Reverses Parkinson Disease In Primates
3. Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa
4. Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation
5. Antibodies from plants protect against anthrax
6. New RNA polymerase discovered in plants
7. Implanted Devices Detect High-Risk Heart Failure Patients
8. Ophthalmologists implant five patients with artificial silicon retina microchip
9. World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics
10. Polymers with copper show promise for implanted sensors
11. Transgenic plants remove more selenium from polluted soil than wild plants, new tests show
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:11/29/2016)... , November 29, 2016 Nearly one billion ... Continue Reading ... ... part of an efficient Identity Management. (PRNewsFoto/DERMALOG Identification Systems) ... DERMALOG is Germany's largest Multi-Biometric supplier: The ...
(Date:11/21/2016)... Lithuania , Nov. 21, 2016   ... and object recognition technologies, today announced that the ... smart cards was submitted for the NIST ... successfully passed all the mandatory steps of the ... evaluation is a continuing test of fingerprint templates ...
(Date:11/15/2016)... Nov. 15, 2016  Synthetic Biologics, Inc. (NYSE ... focused on the gut microbiome, today announced the ... shares of its common stock and warrants to ... a price to the public of $1.00 per ... Biologics from the offering, excluding the proceeds, if ...
Breaking Biology News(10 mins):
(Date:12/9/2016)... /PRNewswire/ - Portage Biotech Inc. ("Portage" or "the Company") ... announce that Biohaven has issued today the following press ... (PRWEB) Dec 9, 2016 - Biohaven Pharmaceutical Holding ... the U.S. Food and Drug Administration ("FDA") has granted ... candidate BHV-0223, an orally dissolving tablet being developed for ...
(Date:12/8/2016)... CA (PRWEB) , ... December 08, 2016 , ... Lajollacooks4u, ... was a banner year for team building events, new program offerings and company expansion. ... it expanded earlier this year to include groups of over 30 people. Ever since, ...
(Date:12/8/2016)...  Biotheranostics today announced that new data will ... Cancer Index (BCI) in identifying which patients with ... for disease recurrence and might benefit from extended ... advancing the understanding of the value of BCI ... inform decisions related to patient treatment. These data ...
(Date:12/8/2016)... ... December 08, 2016 , ... Opal Kelly, ... essential device-to-computer interconnect using USB or PCI Express, announced the FOMD-ACV-A4, the company's ... is a small, thin, SODIMM-style module that fits a standard 204-pin SODIMM socket ...
Breaking Biology Technology: