Navigation Links
From one cell to many: How did multicellularity evolve?
Date:1/24/2014

n at least 25 lineages. However, even when defined more strictlyrequiring that cells be connected, communicate, and cooperate in some fashion or anotherit has still notably evolved once in animals, three times in fungi, six times in algae, and multiple times in bacteria.

Multicellularity could have been achieved numerous times based on the premise that selection acts on phenotypes and how well certain combinations of traits work. In other words, even if cells adhere together using different mechanisms, or via different developmental pathways, if the results are cooperative aggregations of cells that function well and thus are able to survive better and, critically, produce more offspring than their unicellular counterparts, then these various evolutionary pathways could all be possible.

"The curtail point," emphasizes Niklas, "is that the evolution of multicellular organisms occurred multiple times and involved different developmental 'motifs,' such as the chemistry of the 'glues' that allow cells to stick together."

Certainly, one of the themes that Niklas drives home in his review is that natural selection acts on functional traits, so multicellularity could have evolved many times via different mechanisms and modes of development, and using different aspects of cellular biology.

However, there are certain sets of requirements that must be met in order for multicellularity to evolve. These include that cells must adhere to, communicate with, and cooperate with each other, and that cells must specialize in their functions (i.e., that not all cells do exactly the same thing, otherwise they would just be a group of cells or a colony). In order to make these things happen, cells must not reject each other. In other words, they must be genetically compatible to some extentanalogous to how our human bodies reject foreign items that are not recognized by our cells. This first step is termed "alignment-of-fitness."

Inte
'/>"/>

Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert  

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
From one cell to many:  How did multicellularity evolve?
(Date:12/5/2014)... MOUNTAIN VIEW, Calif. , Dec. 4, 2014 ... and safety has boosted investments in new testing ... products has also given rise to a range ... driven by the requirements of Generation Y, which ... digital technologies. As a result, product development strategies ...
(Date:12/4/2014)... Fla. , Dec. 3, 2014  Crossmatch™, ... today announced that its DigitalPersona ® Pro ... readers have been deployed throughout First Bank branch ... South Carolina and Virginia. First ... Southern Pines, North Carolina , ...
(Date:12/3/2014)... , Dec. 2, 2014 As part ... readers, Inception Technologies is pleased to announce the release ... for customers to collect the workforce data that they ... that have been left by existing readers. Many such ... interface, connectivity and modern technology. Older models force users ...
Breaking Biology News(10 mins):Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3Inception Technologies to Release New Biometric Reader 2
... turned off or left on in healthy ... common cancers and maybe help avoid them, Medical College ... alterations, called DNA methylation, in the body,s basic building ... and their cancerous counterpart to find telltale patterns that ...
... A new study finds that most older long-term cancer survivors ... health habits. The study also reveals that those survivors ... health and quality of life. Published in the September 1, ... the American Cancer Society, the research indicates that greater efforts ...
... The results of a national assessment of indoor location ... announced at Worcester Polytechnic Institute (WPI) during the 2009 ... Emergency Responders, which runs from Aug. 3 to 4. ... with funding from the Department of Homeland Security and ...
Cached Biology News:Cancer's distinctive pattern of gene expression could aid early screening and prevention 2Cancer's distinctive pattern of gene expression could aid early screening and prevention 3Cancer's distinctive pattern of gene expression could aid early screening and prevention 4Most older long-term cancer survivors have poor health habits 2Results of national assessment of first responder location systems to be announced Aug. 3 2Results of national assessment of first responder location systems to be announced Aug. 3 3Results of national assessment of first responder location systems to be announced Aug. 3 4
(Date:12/24/2014)... SoundConnect’s 2015 ... introduce cutting edge communication technology, provide continued ... platform upgrades. This webinar series demonstrates online ... their quest to leverage web conferencing’s most ... SoundConnect’s Marketing Manager, Seanna Baumgartner, “Our webinars ...
(Date:12/24/2014)... report expects global cell isolation and expansion market to ... carefully analyzed data about the vital drivers, restraints, trends, ... Copy of Report @ http://bit.ly/1yUxy0T , According ... will keep witnessing growth at an impressive CAGR during ... by rapid technological advancements, government funding and investments, and ...
(Date:12/24/2014)... LOUIS , Dec. 23, 2014 ... today that the waiting period under the Hart-Scott-Rodino ... the acquisition expired on December 22, 2014, thereby ... review requirement for the acquisition of the Company ... U.S. antitrust clearance satisfies another condition to closing ...
(Date:12/22/2014)... RepliCel Life Sciences Inc. (OTCQB: REPCF) (TSX.V: RP), a ... of autologous cell therapies, announced today the publication of ... conjunction with co-authors from Kyoto University and the University ... clinical research using dermal sheath cup (DSC) cells to ... paper entitled " Hair Follicle Dermal Stem Cells Regenerate ...
Breaking Biology Technology:SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5
... Calif., May 12 An audit of the,state ... flaws,in Proposition 71 that created the agency, Consumer ... State Controller John Chiang found that with a,relatively ... complies with the requirements of Proposition 71, the,initiative ...
... May 12 Idenix,Pharmaceuticals, Inc. (Nasdaq: IDIX ) ... at the Rodman & Renshaw 5th Annual Global,Healthcare Conference ... at Le,Meridien Beach Plaza Hotel in Monte Carlo, Monaco., ... presentation can be,accessed under "Calendar of Events" in the ...
... FREEPORT, N.Y., May 12 "What,s the difference ... repair my DNA?" Hundreds of,women are trying to ... will give me beautiful, healthy skin?, Bio-scientist ... care expertise -- more than 20 years of ...
Cached Biology Technology:Controller's Stem Cell Agency Audit Ignores California Agency's Built-in Flaws 2Controller's Stem Cell Agency Audit Ignores California Agency's Built-in Flaws 3A Scientist Dechipers the Code to Beautiful, Healthy Skin in 'The New Science of Perfect Skin' 2
RABBIT ANTI WARFARIN...
For the quantitative determination of canine Interferon gamma,(IFN-γ) concentrations in cell culture supernates, serum and,plasma....
For the development of an immunoprecipitation assay to measure Chk1 kinase activity in cell lysates....
Bovine Serum Albumin Peroxidase Stabilizer Solution, 1 L...
Biology Products: