Navigation Links
Flower organ's cells make random decisions that determine size
Date:5/17/2010

PASADENA, Calif.The sepals of the plant Arabidopsis thalianacommonly known as the mouse-eared cressare characterized by an outer layer of cells that vary widely in their sizes, and are distributed in equally varied patterns and proportions.

Scientists have long wondered how the plant regulates cell division to create these patternsin other words, how it decides which and how many cells will be large, which slightly smaller, and which very small.

Melding time-lapse imaging and computer modeling, a team of scientists led by biologists from the California Institute of Technology (Caltech) has provided a somewhat unexpected answer to this question.

"We conclude that probabilistic decisions of individual cellsrather than organ-wide mechanismscan produce a characteristic and robust cell-size pattern in development," says Elliot Meyerowitz, the George W. Beadle Professor of Biology and chair of the Division of Biology at Caltech.

These findings were published on May 11 in the online journal PLoS Biology.

A plant's sepals are the small green leaf-like organs that cup the petals of a flower, enclosing and protecting the flower before it blooms. The outer layer, or epidermis, of the Arabidopsis sepal consists of cells of widely varying sizes. These cells range in size from very small to very large; the largest cells are a type found only in the sepals and are dubbed, appropriately, "giant cells."

Each of the four sepals that cup an Arabidopsis flower has a unique pattern of cell sizes. What the Caltech-led team wanted to find out was what determines this pattern.

To gain insight into the process, Meyerowitz and Caltech postdoctoral scholar Adrienne Roeder imaged sepals during their early development. They tracked each round of cell divisions to determine how the different cell sizes were created, and what influences their distribution pattern. They then worked with senior
'/>"/>

Contact: Lori Oliwenstein
lorio@caltech.edu
626-395-3631
California Institute of Technology
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Different forms of flowers continues to fascinate
2. Longer-lasting flowers: Fresh ideas from ARS researchers
3. Traces of early Native Americans -- in sunflower genes
4. Can the morphology of fossil leaves tell us how early flowering plants grew?
5. DNA sequencing unlocks relationships among flowering plants
6. Flower power can still calm the masses
7. Tobacco plant thwarts caterpillar onslaught by opening flowers in the morning
8. Changing flowering times protect tobacco plants against insect herbivory
9. Michigan State University study sheds light on microscopic flower petal ridges
10. How did flowering plants evolve to dominate Earth?
11. Flax and yellow flowers can produce bioethanol
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Flower organ's cells make random decisions that determine size
(Date:11/11/2014)... 2014  Forensicon, Inc., a Chicago ... announce the promotion of Yaniv Schiff from ... In Schiff,s new role as Director, he will lead ... forensics examiners and provide leadership within the company,s digital ... http://photos.prnewswire.com/prnh/20141110/157719 Schiff joined Forensicon in ...
(Date:11/6/2014)... a team of Florida State University biologists could lead ... to and survive environmental swings such as droughts or ... of the journal The Plant Cell , sheds ... proteins) is organized in a cell and how plants ... on and others are turned off. , "If you ...
(Date:11/5/2014)... – Kelly Redmond has dedicated his career to ... to a general audience. , As deputy director ... Center at Nevada,s Desert Research Institute, Redmond has ... management, application and dissemination of climate data to ... Fall Meeting in San Francisco on December 15-19, ...
Breaking Biology News(10 mins):Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Maize analysis yields whole new world of genetic science 2Nevada climatologist to be honored at AGU Fall Meeting for lifetime of public outreach 2
... LANSING, Mich. Diversity is valuable socially, economically and ... has found that growing more corn to produce ethanol ... of beneficial insects to control pests, a loss valued ... states studied (Michigan, Iowa, Minnesota and Wisconsin). "Corn ...
... R.I. December 15, 2008 The elevated carbon dioxide ... 2100 will likely lead to physiological impairments of jumbo (or ... Island scientists. The results of a study by Brad Seibel, ... former URI post-doctoral student now on the faculty at the ...
... and adults with the blood cancer mixed-lineage leukemia (MLL) typically ... first birthdays. Although there are varying causes of MLL, most ... MLL and the AF4 genes. When ... potent cancer-causing oncogene is created. Although researchers have known that ...
Cached Biology News:Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops 2Ocean acidification from CO2 emissions will cause physiological impairment to jumbo squid 2Tracking the molecular pathway to mixed-lineage leukemia 2
(Date:11/27/2014)... BELLINGHAM, Washington, and PITTSFIELD, Massachusetts, USA (PRWEB) November 26, ... pinpoint cancer cells with more accuracy, additive systems to ... improve highway safety by analyzing road conditions are among ... Awards for Photonics Innovation . The awards are sponsored ... photonics , and Photonics Media . , Winners ...
(Date:11/26/2014)... 26, 2014 The North America ... the market for detailed analysis of the growth ... to reach $616.3 million by 2018, growing at ... , Browse through the TOC of the North ... an idea of the in-depth analysis and industry ...
(Date:11/26/2014)... 2014 The Alliance for Safe ... of European physicians at the "1 ST ... Therapies" at the Spanish Ministry of Health, Social ... and the Spanish Bioindustry Association (ASEBIO), included regulators ... Spanish oncology and rheumatology societies, representatives from a ...
(Date:11/26/2014)... Morristown, NJ (PRWEB) November 25, 2014 ... it has officially joined the Morris County (New ... MCCC, which is a leading business organization in ... unique opportunity to further engage some key clients ... have operations in the geographic area. Membership enables ...
Breaking Biology Technology:Finalists Named for 2015 Prism Awards for Photonics Innovation 2Finalists Named for 2015 Prism Awards for Photonics Innovation 3Finalists Named for 2015 Prism Awards for Photonics Innovation 4Finalists Named for 2015 Prism Awards for Photonics Innovation 5The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3ASBM Presents European Physicians Survey at Spanish Ministry of Health 2Whitehouse Laboratories Joins Morris County Chamber of Commerce 2Whitehouse Laboratories Joins Morris County Chamber of Commerce 3
... Pharmacyclics, Inc. (Nasdaq: PCYC ) today announced ... the Securities and Exchange Commission (the "SEC") for a rights ... be made through the distribution of non-transferable subscription rights to ... per share, at a subscription price to be determined. ...
... Defines New Levels of Performance for Exact Mass MS ... , , PHILADELPHIA, June 1 Waters Corporation ... of a powerful next-generation, high performance, mass spectrometer, the ... time-of-flight mass spectrometry to new heights, the SYNAPT G2 ...
... during the American Transplant Congress in Boston, MA May ... Lead investigator, Dr. Manuel R. Carreno, along with ... evaluated whether single or serial ImmuKnow assessments are most ... recipients. Patients were randomly selected after 30-60 days (N=134) ...
Cached Biology Technology:Pharmacyclics Files Registration Statement for Rights Offering 2Pharmacyclics Files Registration Statement for Rights Offering 3Pharmacyclics Files Registration Statement for Rights Offering 4Waters Introduces New SYNAPT G2 with Greater Power, Versatility and Speed Than Any Other High-End Mass Spectrometer 2Waters Introduces New SYNAPT G2 with Greater Power, Versatility and Speed Than Any Other High-End Mass Spectrometer 3Waters Introduces New SYNAPT G2 with Greater Power, Versatility and Speed Than Any Other High-End Mass Spectrometer 4Waters Introduces New SYNAPT G2 with Greater Power, Versatility and Speed Than Any Other High-End Mass Spectrometer 5Waters Introduces New SYNAPT G2 with Greater Power, Versatility and Speed Than Any Other High-End Mass Spectrometer 6Serial Monitoring With ImmuKnow(R) is Useful in the Risk Assessment of Kidney Transplant Recipients 2
Mouse polyclonal antibody raised against a partial recombinant NCLN. NCBI Entrez Gene ID = 56926...
...
...
Mouse monoclonal antibody to UGT2B10 - UDP glucuronosyltransferase 2 family, polypeptide B10...
Biology Products: