Navigation Links
Yeast's lifestyle couples mating with meiosis
Date:1/5/2014

lusitaniae, which unlike many Candida species happens to prefer a haploid "lifestyle." The scientists compared how its gene expression regulates mating and meiosis the process of producing haploid cells from diploid cells to that of a related diploid yeast, Saccharomyces cerevisiae, a.k.a. brewer's yeast.

Previous studies had shown that the brewer's yeast regulates meiosis and mating independently. The genes relevant to each process are transcribed and expressed when their specific process is underway. What the researchers discovered in C. lusitaniae, however, is that the yeast expressed genes associated with meiosis and mating during both processes. Their mating and meiosis programs were essentially fused.

"What was surprising was that when we started doing the transcriptional profiling experiments to see how genes are expressed, we weren't seeing this delineation of two programs," Bennett said. "We were seeing genes that that should have been expressed in mating only were also being expressed in meiosis and genes that should have been expressed in meiosis only were expressed in mating. In none of the other closely related species that have been characterized has something like that been seen."

The researchers showed this not only by tracking gene expression but also by knocking out genes in C. lusitaniae that in brewer's yeast are associated with just meiosis (such as IME2) or just mating (such as STE12). Knocking out either gene scuttled both processes in C. lusitaniae. Restoring the knocked out genes restored the processes.

Reproduction rewired

It appeared as if sometime during its own evolution, C. lusitaniae had completely rewired its reproductive program compared to its "cousin" brewer's yeast. If that were without precedent, perhaps it could just be written off as an oddity, but there is another haploid yeast that has also evolved such a fused program: Schizosaccharo
'/>"/>

Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. More efficient production of biofuels from waste with the help of modified yeasts
2. Unique adaptations to a symbiotic lifestyle reveal novel targets for aphid insecticides
3. Childrens physical activity levels are not enough to counteract sedentary lifestyles
4. Lifestyle of a killer
5. Researchers develop guidebook for promoting healthy lifestyles among Hispanic populations
6. Gene mutations caused by a fathers lifestyle can be inherited by multiple generations
7. Moderate exercising encourages a healthier lifestyle
8. Lifestyle, age linked to diabetes-related protein
9. For gay couples, condom decision-making and condom use varies by race
10. Low-cost in-vitro fertilization method developed at CU may help couples in developing countries
11. New method for estimating parameters may boost biological models
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Yeast's lifestyle couples mating with meiosis
(Date:7/28/2014)... Roald Amundsen reached the South Pole in 1911, but ... before any human. , Using data from 16 ice ... continent, including the South Pole, a group led by ... Reno, Nevada, created the most accurate and precise reconstruction ... The new record, described in an article published today ...
(Date:7/28/2014)... among minerals and organic compounds in hydrothermal environments are ... provide energy for the deep biosphere, and may have ... is known about how minerals influence organic reactions. ... demonstrated how a common mineral acts as a catalysts ... for toxic solvents or expensive reagents. , At the ...
(Date:7/28/2014)... of juvenile rat brain cells suggests that the effects ... between brain cells are temporary. , The study, published ... ONE , was conducted by biologists at the University ... in New York in response to concerns, arising from ... exposing children to general anesthetics may increase their susceptibility ...
Breaking Biology News(10 mins):Lead pollution beat explorers to South Pole, persists today 2Lead pollution beat explorers to South Pole, persists today 3Mineral magic? Common mineral capable of making and breaking bonds 2Mineral magic? Common mineral capable of making and breaking bonds 3Study suggests disruptive effects of anesthesia on brain cell connections are temporary 2Study suggests disruptive effects of anesthesia on brain cell connections are temporary 3
... UT Southwestern Medical Center have discovered a basic mechanism ... vessels can grow ?sometimes abnormally ?suggesting methods of treatment ... blood vessels is involved in hypertension, coronary artery disease, ... this detailed mechanism, it is now possible to begin ...
... line that produced humans seems to be among the slowest. ... the European Molecular Biology Laboratory (EMBL), is that our species ... been lost in more quickly-evolving animals. This overturns a commonly-held ... The work appears in the current issue of the journal ...
... willow warblers and beaver dams once were bountiful in an ... wolves left this area, elk grew more plentiful, browsing heavily ... and sparrows have replaced the warblers in what is now ... absence of the wolf, a top predator. That's the compelling ...
Cached Biology News:UT Southwestern researchers unravel control of growing blood vessels 2The earliest animals had human-like genes 2The earliest animals had human-like genes 3Wolves' top-down effect 2
(Date:7/30/2014)... Connecticut Center for Advanced Technology, Inc. ... Hartford, Conn., was awarded a Rural Business Enterprise Grant ... that will determine the feasibility of implementing an ... Rural Development provided $53,000 for CCAT under the Rural ... of the feasibility study in fiscal year 2014. , ...
(Date:7/30/2014)... 2014 LayerBio, Inc., an MIT spinoff ... first round of seed financing from friends and family ... to develop a novel sustained-release product for ophthalmology. , ... and their commitment to this important work," said Dr. ... one of many areas in which innovations in drug ...
(Date:7/29/2014)... Bellingham, WA (PRWEB) July 29, 2014 ... manipulation of the brain that are driving a revolution ... a new peer-reviewed journal published by SPIE, ... The first issue coincides with the launch of the ... section features articles that lay out a vision for ...
(Date:7/29/2014)... (July 29, 2014) Tough, ultralight foam of ... shape through a chemical process invented at Rice University. ... looks like a nanoscale building, with floors and walls ... pair of two-dimensional materials: floors and walls of graphene ... nitride platelets. , The researchers say the foam ...
Breaking Biology Technology:USDA Grant Funds Second Phase of Bio-Energy Research Community Economic Development in CT 2USDA Grant Funds Second Phase of Bio-Energy Research Community Economic Development in CT 3SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 2SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 3SPIE Launches 'Neurophotonics' Journal with Special Section on BRAIN Initiative 4Tough foam from tiny sheets 2
... 2011 BioStorage Technologies, Inc. a global provider ... cold chain logistics for the bioscience industry, will ... the International Contract Services Expo (ICSE), on Wednesday, ... The symposium will include two 1-hour presentations ...
... International, Inc. (OTC Pink: DYAI), a global biotechnology ... financial results for the third quarter ended September ... to discuss those financial results as follows: ...  After market close, Thursday, November 3, 2011. ...
... 2011 Verenium Corporation (Nasdaq: VRNM ), ... enzymes, today announced that it has entered into an ... the United States ("Ex-Im Bank") for two 18-month, secured ... These new credit facilities will allow the ...
Cached Biology Technology:BioStorage Technologies to Host Global Sample Management Benchmarking Symposium at International Contract Services Expo 2Verenium Announces Up to $16 Million in New Secured Financings 2Verenium Announces Up to $16 Million in New Secured Financings 3