Navigation Links
Root system architecture arises from coupling cell shape to auxin transport
Date:12/15/2008

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:4/26/2016)... April 27, 2016 Research ... Multi-modal Biometrics Market 2016-2020"  report to their offering.  ... The analysts forecast the global multimodal ... 15.49% during the period 2016-2020.  Multimodal ... sectors such as the healthcare, BFSI, transportation, automotive, ...
(Date:4/15/2016)... , April 15, 2016  A new ... make more accurate underwriting decisions in a fraction ... timely, competitively priced and high-value life insurance policies ... screenings. With Force Diagnostics, rapid testing ... lifestyle data readings (blood pressure, weight, pulse, BMI, ...
(Date:4/14/2016)... Israel , April 14, 2016 ... Authentication and Malware Detection, today announced the appointment of ... assumed the new role. Goldwerger,s leadership appointment ... on the heels of the deployment of its platform ... BioCatch,s behavioral biometric technology, which discerns unique cognitive and ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , ... June 23, 2016 , ... ... pleased to announce the launch of their brand, UP4™ Probiotics, into Target stores ... 35 years, is proud to add Target to its list of well-respected retailers. ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... and Mold) microbial test has received AOAC Research Institute approval 061601. , “This ... introduced last year,” stated Bob Salter, Vice President of Regulatory and Industrial Affairs. ...
(Date:6/23/2016)... OTTAWA, ON (PRWEB) , ... June 23, 2016 , ... ... former DNA Technical Leader at the Arkansas State Crime Laboratory, has joined STACS DNA ... joining the STACS DNA team,” said Jocelyn Tremblay, President and COO of STACS DNA. ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
Breaking Biology Technology: