Navigation Links
How Volvox got its groove
Date:2/19/2009

Some algae have been hanging together rather than going it alone much longer than previously thought, according to new research.

Ancestors of Volvox algae made the transition from being a single-celled organism to becoming a multicellular colony at least 200 million years ago, during the Triassic Period.

At that time, Earth was a hot-house world whose inhabitants included tree ferns, dinosaurs and early mammals. Previous estimates had suggested Volvox's ancestors arose only 50 million years ago.

The algae switched to a communal lifestyle in only 35 million years -- "a geological eyeblink," said lead researcher Matthew D. Herron of The University of Arizona in Tucson.

Figuring out how algae made the leap can provide clues to how multicellular organisms such as plants and animals evolved from single cells.

Cooperating successfully is the key, Herron said.

"All the macroscopic organisms we see around us trace back to unicellular ancestors," said Herron, a doctoral candidate in the UA's department of ecology and evolutionary biology. "Each of those groups had to go through a transition like this one.

"We think the early changes in this process were related to cooperation among cells and conflicts among cells -- and finally to the resolution of those conflicts," he said.

The researchers used DNA sequences from about 45 different species of Volvox and related species to reconstruct the group's family tree and determine how long ago the first colonial ancestor arose.

The team's article "Triassic origin and early radiation of multicellular volvocine algae," is in this week's online Early Edition of the Proceedings of the National Academy of Sciences.

Herron's co-authors Jeremiah D. Hackett and Richard E. Michod are members of the UA's department of ecology and evolutionary biology. Co-author Frank O. Aylward was at the UA when the research
'/>"/>

Contact: Mari N. Jensen
mnjensen@email.arizona.edu
520-626-9635
University of Arizona
Source:Eurekalert  

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
How Volvox got its groove
(Date:7/31/2014)... burning burning forests to create agricultural lands, ... and wildfires figures into both climate change ... of a new study by Stanford University Civil ... degree of that contribution had never been comprehensively ... published July 30 in the Journal of ...
(Date:7/31/2014)... Kansas State University researchers have completed a 20-year ... Flint Hills prairie at different times of the ... current late spring time frame has no measurable ... may have multiple benefits. , The study was ... Konza Prairie Biological Station fire chief, and Joseph ...
(Date:7/31/2014)... Do people make a rational choice to be liberal ... Is it a matter of genetics?, Two political scientists ... Rice University say that neither conscious decision-making nor parental ... others lean right. , A growing body of evidence ... the core of political differences, the researchers say in ...
Breaking Biology News(10 mins):Stanford professor finds that wildfires and other burns play bigger role in climate change 2Stanford professor finds that wildfires and other burns play bigger role in climate change 3Stanford professor finds that wildfires and other burns play bigger role in climate change 4Study finds benefits to burning Flint Hills prairie in fall and winter 2Study finds benefits to burning Flint Hills prairie in fall and winter 3Scientists find growing consensus: Political attitudes derive from body and mind 2
... Six Arizona State University faculty members have earned ... the National Science Foundation (NSF). The Career program ... most prestigious awards in support of junior faculty who ... education and the integration of education and research within ...
... BOSTON and MEDFORD/SOMERVILLE, Mass. -- A collaborative team of ... Architectural College and Tufts University will use Earth Day ... sustainable living, a house that will be solar powered, ... on Wednesday, April 22, at 11:00 a.m. at Sophia ...
... Technology Adds Robust Biometric Identification to Passlogix,s ... Calif., April 6 Fujitsu Computer Products ... innovative computer products including hard disk drives, ... the integration of its PalmSecure ...
Cached Biology News:6 young ASU faculty earn NSF Career awards 26 young ASU faculty earn NSF Career awards 36 young ASU faculty earn NSF Career awards 46 young ASU faculty earn NSF Career awards 56 young ASU faculty earn NSF Career awards 66 young ASU faculty earn NSF Career awards 7Tufts students host Earth Day with groundbreaking ceremony for solar house 2Tufts students host Earth Day with groundbreaking ceremony for solar house 3Fujitsu PalmSecure LOGONDIRECTOR Integrates with Passlogix v-GO Access Accelerator Suite 2Fujitsu PalmSecure LOGONDIRECTOR Integrates with Passlogix v-GO Access Accelerator Suite 3Fujitsu PalmSecure LOGONDIRECTOR Integrates with Passlogix v-GO Access Accelerator Suite 4
(Date:7/31/2014)... July 31, 2014 Nearly 20,000 medical professionals ... Annual Meeting & Clinical Lab Expo in ... never-before-seen breakthroughs in diagnostic research and technology that will ... As of Wednesday, July 30, more than ... Meeting & Clinical Lab Expo, with more than 10,000 ...
(Date:7/31/2014)... to see through organs and even the entire body ... fine-grained cellular structures has been a long-time dream of ... July 31st in the journal Cell has ... for making opaque organs, bodies, and human tissue biopsies ... The protocols could pave the way for a better ...
(Date:7/31/2014)... , July 31, 2014 The ... today with $25,000 to fund a translational research ... in 2011, the gift was presented at the ... Annual Meeting in Colorado Springs, CO. ... in neurointerventional approaches to neurovascular conditions, SNIS formed ...
(Date:7/31/2014)... Graphite Metallizing Corporation announces GRAPHALLOY® ... bearings are uniquely suited to prevent loss of lubrication ... the high temperatures . , Recently, a manufacturer ... engineers at Graphite Metallizing to overcome problems with movement ... operation, pans containing blocks of powder mixture are loaded ...
Breaking Biology Technology:Research on Digital Health, Alzheimer's, Ebola Draws Nearly 20,000 Attendees to 2014 AACC Annual Meeting & Clinical Lab Expo 2Research on Digital Health, Alzheimer's, Ebola Draws Nearly 20,000 Attendees to 2014 AACC Annual Meeting & Clinical Lab Expo 3See-through organs and bodies will accelerate biomedical discoveries 2SNIS Foundation Bestows First Grant Award For Cutting-Edge NeuroInterventional Research 2SNIS Foundation Bestows First Grant Award For Cutting-Edge NeuroInterventional Research 3Graphite Metallizing Announces Bearings for High Temperature Oven Applications 2Graphite Metallizing Announces Bearings for High Temperature Oven Applications 3
... in the lines, dots and other shapes etched on ... now found a way to literally melt away such ... quality without increasing fabrication cost. , The method, published ... more precise shaping of microchip components than what is ...
... Better Nutrition,( http://www.betternutrition.com ), the country,s most ... launch of its 2008 Summer,Nutrition Tour. Throughout May, ... store shoppers from New Jersey to California the ... on the market., "Supplements are important for ...
... WOONSOCKET, R.I., May 2 MultiCell,Technologies, Inc. (OTC Bulletin Board: ... address and telephone numbers. Effective May 1, 2008:, ... Woonsocket, RI 02895. -- ... new fax number is: (401) 762-0098, MultiCell Technologies, ...
Cached Biology Technology:Melting defects could lead to smaller, more powerful microchips 2Melting defects could lead to smaller, more powerful microchips 3Melting defects could lead to smaller, more powerful microchips 4Better Nutrition Launches 2008 Summer Nutrition Tour 2MultiCell Technologies Relocates Corporate Headquarters 2
Rabbit polyclonal to Quinaldic Acid ( Abpromise for all tested applications). Antigen: Synthetic peptide Quinaldic Acid conjugated to a protein carrier....
... kinase (JNK) is one of the several ... been used as a sensitive reporter for ... a 1000-fold increase in sensitivity in comparison ... Firefly luciferase catalyzes the oxidative carboxylation of ...
... number is a new product ... Cornings product number. If showing ... under the old Sigma-Aldrich number ... for assistance. ID clarifier: filling ...
... CLS number is a new ... match Cornings product number. If ... order under the old Sigma-Aldrich ... service for assistance. ID clarifier: ...
Biology Products: