Navigation Links
Elastic stresses influence formation of leaf veins
Date:4/10/2008

Elastic stresses may play a crucial role in determining a leaf's venation pattern, according to a joint Argentinian-French study published April 11th in the open-access journal PLoS Computational Biology. The researchers have developed a model that reproduces statistical properties of venation patterns, based on the assumption that cells can suffer abrupt elastic distortions during growth. These distortions appear due to the elastic stresses generated by the unequal growth rate of different leaf tissues.

Leaf veins are the channels that conduct substances within the leaf and lend support to the leaf tissue. The accepted view of vein formation claims that the transport of the hormone auxin triggers cell differentiation to form veins. Although auxin plays a fundamental role in vein formation, there are important features of the leaf vascular system which remain unexplained. In particular, flux of auxin would produce a tree-like branched vein pattern, reminiscent of a river network, while real venation patterns are highly interconnected, more akin to a crack pattern in mud or paint.

These facts led Fabiana Laguna, Steffen Bohn, and Eduardo Jagla to further analyze a previously-proposed hypothesis that elastic stresses play an important role in leaf venation. To test whether this hypothesis could sustain a quantitative comparison with actual venation patterns, they developed and implemented a numerical model, and found simulated patterns with statistical properties similar to natural ones.

The full explanation for the development of veins could involve both elastic stresses and the influence of auxin, the authors say. They believe that their study could trigger further experimental work to test the relevance of elastic stresses in vein formation.


'/>"/>

Contact: Mary Kohut
Press@plos.org
415-568-3457
Public Library of Science
Source:Eurekalert

Page: 1

Related biology news :

1. JILA finds flaw in model describing DNA elasticity
2. Influence of sex and handedness on brain is similar in capuchin monkeys and humans
3. Heat stress influences low conception of dairy herds
4. Simulating kernel production influences maize model accuracy
5. Social standing influences elephant movement
6. Genes influence age-related hearing loss
7. It is important to demonstrate the influence of the microenvironment in the process of metastasis
8. MIT: Culture influences brain function
9. Body weight influenced by thousands of genes
10. Climate influence on deep sea populations
11. Map is first to track global human influences on ocean ecosystems
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... MELBOURNE, Florida , April 11, 2017 ... "Company"), a security technology company, announces the appointment of independent ... John Bendheim to its Board of Directors, furthering the ... ... behalf of NXT-ID, we look forward to their guidance and ...
(Date:4/5/2017)... 4, 2017 KEY FINDINGS The ... at a CAGR of 25.76% during the forecast period ... primary factor for the growth of the stem cell ... MARKET INSIGHTS The global stem cell market ... and geography. The stem cell market of the product ...
(Date:3/30/2017)... HONG KONG , March 30, 2017 ... developed a system for three-dimensional (3D) fingerprint identification by adopting ground ... technology into a new realm of speed and accuracy for use ... applications at an affordable cost. ... ...
Breaking Biology News(10 mins):
(Date:7/26/2017)... ... July 26, 2017 , ... ... complex problems we face every day. This unique capability combines high resolution ... chemists, and manufacturers to deliver unprecedented datasets for chemical analysis, quality control, and ...
(Date:7/26/2017)...  Nurse practitioners play a crucial role in helping patients ... Merck Manuals survey released today. The survey of 210 ... (88 percent) believe they spend at least half of appointment ... ... Manuals survey of 210 nurse practitioners finds that 78% of ...
(Date:7/24/2017)... , ... July 24, 2017 , ... Charm Sciences, Inc. ... accepted by the National Conference on Interstate Milk Shipments (NCIMS) Laboratory Committee and Appendix ... set to launch July 1, 2017. , The NCIMS voted at its annual meeting ...
(Date:7/20/2017)... ... July 20, 2017 , ... ... ., the Elihu Thomson Professor of Electrical Engineering and Computer Science at the ... winner. Presented annually, the award recognizes an individual who has made and is ...
Breaking Biology Technology: