Navigation Links
Root system architecture arises from coupling cell shape to auxin transport
Date:12/22/2008

Plants come in all shapes and sizes, from grand Redwood trees to the common Snowdrop. Although we cannot see them, under the ground plants rely on a complex network of roots. What determines the pattern of root growth has been a mystery, but a new paper published this week in PLoS Biology shows that the shape of the existing root can determine how further roots branch from it because shape determines hormone concentration. The work also suggests that the root-patterning system shares a deep evolutionary relationship to the patterning system of plant shoots, something that had not been realized previously.

The paper, by Laskowski, Grieneisen, Hofhuis, et al, explores the architecture of the root system of the model organism Arabidopsis thaliana, a plant with the unusual common name "mouse-ear cress." The authors show that the curve of the root is key in provoking new growth. They used computational modeling of the transport of a well-known plant hormone, auxin, and by following the diffusion of this hormone they reveal that its accumulation leads to the specification of new growth regions in the root structure.

In particular, the initial trigger of this accumulation is a difference in cell size between the inner and outer sides of a root curve, which is then amplified by feedback responses from the hormone transport system.

Surprisingly, this new model on root architecture is reminiscent of the way leaves develop around growing tips in plant a key feature of shoot architecture. This is exciting because it suggests that a deep connection exists between both root and shoot architectures which have hitherto been viewed upon as being entirely separate. The work further shows that a new kind of biology, involving complete mixing of experiments and computer modeling, is a very powerful tool in probing organismal architecture.


'/>"/>

Contact: Sally Hubbard
press@plos.org
Public Library of Science
Source:Eurekalert

Page: 1

Related biology news :

1. Bursts of waves drive immune system soldiers toward invaders
2. Bioengineers at University of Pennsylvania devise nanoscale system to measure cellular forces
3. Obesity and the central nervous system -- the state of the art
4. How the plant immune system can drive the formation of new species
5. Upgraded IMG 2.3 Data Management System released by DOE JGI to eager user community
6. Systems Biology poised to revolutionize the understanding of cell function and disease
7. Europe needs collective effort on System Biology, says ESF Task Force
8. Cogent Systems and Northrop Grumman Reach Agreement to Settle Automated Fingerprint Identification Technology Suit and Create Strategic Alliance
9. Radiant Systems Selects BIO-key(R) Biometric Software for POS Solution
10. Fujitsu and HT Systems Partner to Provide Biometric Patient Identity Management
11. Fujitsu and HT Systems Partner to Provide Biometric Patient Identity Management
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... -- Today HYPR Corp. , leading innovator in ... the HYPR platform is officially FIDO® Certified . ... that empowers biometric authentication across Fortune 500 enterprises and ... 15 million users across the financial services industry, however ... suites and physical access represent a growing portion of ...
(Date:4/4/2017)... YORK , April 4, 2017   EyeLock ... today announced that the United States Patent and Trademark ... patent broadly covers the linking of an iris image ... same transaction) and represents the company,s 45 th ... latest patent is very timely given the multi-modal biometric ...
(Date:3/30/2017)... 2017  On April 6-7, 2017, Sequencing.com will host ... hackathon at Microsoft,s headquarters in Redmond, ... on developing health and wellness apps that provide a ... Genome is the first hackathon for personal genomics ... companies in the genomics, tech and health industries are ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... (PRWEB) , ... May 22, 2017 , ... ... and Photonics 2017 in San Diego, California, this August will feature high-level ... fuels, and autonomous vehicles. , SPIE Optics and Photonics, the largest multidisciplinary optical ...
(Date:5/23/2017)... ... May 23, 2017 , ... Cambridge Semantics , the leading ... year’s Bio-IT World Conference and Expo in Boston May 23-25 with a ... The Anzo Smart Data Lake is also a finalist for the Best of ...
(Date:5/21/2017)... ... May 19, 2017 , ... Ovation Fertility scientists’ ... American Association of Bioanalysts (AAB) and the College of Reproductive Biology (CRB) today ... AAB’s commitment to excellence in clinical laboratory services and regulations. , “We ...
(Date:5/18/2017)... ... May 18, 2017 , ... Lajollacooks4u has added another ... a two-hour team-building package designed for groups of 10-30 people. Guests can ... include items, such as Blackened Shrimp with Edamame Salad, Pizza Rolls with Pepperoni ...
Breaking Biology Technology: