Navigation Links
Fast-evolving genes control developmental differences in social insects
Date:9/19/2011

Genes essential to producing the developmental differences displayed by social insects evolve more rapidly than genes governing other aspects of organismal function, a new study has found.

All species of life are able to develop in different ways by varying the genes they express, ultimately becoming different shapes, sizes, colors and sexes. This plasticity permits organisms to operate successfully in their environments. A new study of the genomes of social insects provides insight into the evolution of the genes involved in this developmental plasticity.

The study, which was conducted by researchers at the Georgia Institute of Technology and the University of Lausanne in Switzerland, showed that genes involved in creating different sexes, life stages and castes of fire ants and honeybees evolved more rapidly than genes not involved in these developmental processes. The researchers also found that these fast-evolving genes exhibited elevated rates of evolution even before they were recruited to produce diverse forms of an organism.

"This was a totally unexpected finding because most theory suggested that genes involved in producing diverse forms of an organism would evolve rapidly specifically because they generated developmental differences," said Michael Goodisman, an associate professor in the School of Biology at Georgia Tech. "Instead, this study suggests that fast-evolving genes are actually predisposed to generating new developmental forms."

The results of the study will be published in the Sept. 20, 2011 issue of the journal Proceedings of the National Academy of Sciences. This research was supported by the National Science Foundation.

The project was an international collaboration between Goodisman, associate professor Soojin Yi and postdoctoral fellow Brendan Hunt from the Georgia Tech School of Biology, and professor Laurent Keller, research scientist DeWayne Shoemaker, and postdoctoral fellows Lino Ometto and Yannick Wurm from the Department of Ecology and Evolution at the University of Lausanne.

Social insects exhibit a sophisticated social structure in which queens reproduce and workers engage in tasks related to brood-rearing and colony defense. By investigating the evolution of genes associated with castes, sexes and developmental stages of the invasive fire ant Solenopsis invicta, the researchers explored how social insects produce such a diversity of form and function from genetically similar individuals.

"Social insects provided the perfect test subjects because they can develop into such dramatically different forms," said Goodisman.

Microarray analyses revealed that many fire ant genes were regulated differently depending on whether the fire ant was male or female, queen or worker, and pupal or adult. These differentially expressed genes exhibited elevated rates of evolution, as predicted. In addition, genes that were differentially expressed in multiple contexts -- castes, sexes or developmental stages -- tended to evolve more rapidly than genes that were differentially expressed in only a single context.

To examine when the genes with elevated rates of evolution began to evolve rapidly, the researchers compared the rate of evolution of genes associated with the production of castes in the fire ant with the same genes in a wasp that does not have a caste system. They found that the genes were rapidly evolving in the genomes of both species, even though only one produced a caste system. These results were also replicated for the honeybee Apis mellifera.

"This is one the most comprehensive studies of the evolution of genes involved in producing developmental differences," Goodisman noted.

This study helps explain the fundamental evolutionary processes that allow organisms to develop different adaptive forms. Future research will include determining what these fast-evolving genes do and how they're involved in the production of different sexes, life stages and castes, said Goodisman.


'/>"/>

Contact: Abby Robinson
abby@innovate.gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

Related biology news :

1. Are genes our destiny?
2. Discovery of blood pressure genes could help prevent cardiovascular disease
3. McMaster researchers find missing genes may separate coach potato from active cousin
4. Parents stress leaves lasting marks on children’s genes: UBC-CFRI research
5. How an evolutionary playground brings plant genes together
6. BUSM professor authors book on how knowledge about genes and family history can save lives
7. Methyl magnet genes can cause family cancer risk
8. Stem cells central to pathogenesis of mature lymphoid tumors
9. Scientists copy the ways viruses deliver genes
10. Vanderbilt researchers, international team, uncover genes linked to multiple sclerosis
11. Research discovers frequent mutations of chromatin remodeling genes in TCC of the bladder
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fast-evolving genes control developmental differences in social insects
(Date:3/22/2017)... March 21, 2017   Neurotechnology , a ... technologies, today announced the release of the ... provides improved facial recognition using up to 10 ... single computer. The new version uses deep neural-network-based ... and it utilizes a Graphing Processing Unit (GPU) ...
(Date:3/22/2017)... NEW YORK , March 21, 2017 /PRNewswire/ ... Customer Marketing Cloud used by retailers such as ... in its platform — Product Recommendations and Replenishment. Using ... to give more personalized product and replenishment recommendations ... purchases, but also on predictions of customer intent ...
(Date:3/22/2017)... -- Vigilant Solutions , a vehicle location and ... today the appointment of retired FBI special agent ... development. Mr. Sheridan brings more than 21 ... on the aviation transportation sector, to his new role ... served as the Aviation Liaison Agent Coordinator (ALAC) in ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... New Orleans, La. (PRWEB) , ... March 23, ... ... of real-time, industrial monitoring solutions, today announced the hire of Dr. Sigmund “Sig” ... for APMT customer applications, strategic partnerships and joint development activities. , “Dr. Floyd’s ...
(Date:3/22/2017)... 2017 Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN), today announced ... U.K. Biobank and GSK to generate genetic sequence data from ... initiative will enable researchers to gain valuable insights to support ... range of serious and life threatening diseases. ... Genetic evidence has ...
(Date:3/22/2017)... , ... March 22, 2017 , ... ... human tissue regeneration from small lab samples to full-size tissues, bones, even whole ... establish a vascular system that delivers blood deep into the developing tissue. ...
(Date:3/22/2017)... 22, 2017  Ascendis Pharma A/S (Nasdaq: ASND), ... technology to address significant unmet medical needs in ... full year ended December 31, 2016. ... company as we broadened our pipeline and pursued ... disease company with an initial focus on endocrinology," ...
Breaking Biology Technology: