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

PROVIDENCE, R.I. [Brown University] From a biological point of view, the world's most exotic sex lives may be the ones lived by fungi. As a kingdom, they are full of surprises, and a new one reported in the journal Nature seems sure to titillate the intellects of those who study the evolution of mating and ploidy, the complement of chromosomes in each cell.

Fungal fecundity is a seemingly anything goes world. Individual yeasts reserve the option of either sexual or asexual reproduction. Biologists remain puzzled about why, but different species predominantly maintain cells containing one (haploidy), two (diploidy), or three or more (polyploidy) versions of their chromosomes. Contrast that with the humdrum reproduction of animals who are locked into an unwavering program of sex and two versions of chromosomes in most cell types, except eggs, sperm and some others. Scientists look to yeasts to study the true variety of reproduction in the natural world.

"Fungi, in terms of sexual reproduction, are on the outer limits with what they can do, when they do it, and how they do it," said study corresponding author Richard Bennett, associate professor in Brown University's Department of Molecular Microbiology and Immunology. "There is a lot of super interesting biology in studying fungal sex. They keep surprising us."

In a study Bennett's lab published online in October in the journal Eukaryotic Cell, for example, a team led by undergraduate Riyad Seervai found that when Candida tropicalis mates, it turns diploid cells into tetraploid cells. But then it uses a mechanism other than meiosis to reduce the chromosome complement back to that of a diploid. This work was highlighted in print earlier this month.

Paired programs

In the new study in Nature, Bennett's team, including lead authors Christine Scaduto and Raquel Kim Sherwood (now at Yale), focused on the infectious species Candida
'/>"/>

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:10/15/2014)... Oct. 15, 2014   Neurotechnology , a ... the availability of the VeriLook Surveillance 3.0 ... provides real-time biometric face identification using live video ... cameras. The new version not only identifies faces ... from objects while they are moving through the ...
(Date:10/14/2014)... shows SIRT6—a protein known to inhibit the growth ... skin cancers by turning on an enzyme that increases ... Previously considered protective, SIRT6 is part of a family ... stability and prevent some of the genetic flaws associated ... lead to cancer. This study, in the journal,s October ...
(Date:10/14/2014)... house fly genome for the first time, revealing robust ... that thrives in pathogen-rich dung piles and garbage heaps. ... Genome Biology , will increase understanding of house ... adapt to resist insecticides, which could lead to novel ... and transmit more than 100 human and animal diseases, ...
Breaking Biology News(10 mins):VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2House fly genome reveals expanded immune system 2
... understand extreme sea creaturesExtraordinary creatures who inhabit extreme underwater ... three-year project. These deep-sea communities could reveal an evolutionary ... give us clues to how life could exist onother ... - incredibly hot environments in the deep sea - ...
... how Listeria monocytogenes, which causes a major ... and hide from the body's immune system. They believe ... , The Listeria bacterium, found in ... undercooked and unpasteurized food, causing flu-like symptoms or gastrointestinal ...
... blood pressure-lowering gene into cells and enables that gene to ... to take gene therapy for the disorder a step closer ... a report released online in the Proceedings of the National ... the leading causes of death and disability in adults worldwide," ...
Cached Biology News:Gene discovery sheds light on causes of rare disease, cancer 2Gene therapy to lower blood pressure just enough 2
(Date:10/22/2014)... 22, 2014   Synthetic Biologics, Inc. (NYSE ... for serious infections and diseases, announced today that the ... of Allowance for a composition of matter patent application ... program, SYN-004. This is Synthetic Biologics, first allowed ... and adds to the Company,s extensive C. difficile ...
(Date:10/22/2014)... HONG KONG , Oct. 22, 2014 ... enterprise, announced today that rare disease expert John ... president, research. Dr. McKew brings more than two decades ... at the National Institutes of Health, Wyeth Research and ... McKew will lead aTyr,s efforts to expand and translate ...
(Date:10/20/2014)... 20, 2014 Asterias Biotherapeutics, Inc. (NYSE ... signed a Notice of Grant Award (NGA) with ... October 1, 2014.  The NGA provides for the ... release of additional grant funds pursuant to the ... clinical development of Asterias, product, AST-OPC1. The grant ...
(Date:10/20/2014)... Oct. 20, 2014 PureTech , a ... big healthcare problems, announced today the closing of ... participation from Invesco Perpetual, a $120 Billion group ... drive PureTech,s existing pipeline forward and to advance ... the scientific creativity to really go for the ...
Breaking Biology Technology:Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 4aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6
... (Nasdaq and SWX: BMRN) announced today that AnGes ... Japan, has,received approval for its Marketing Application for ... and Welfare,(MHLW) for the treatment of patients with ... to work with AnGes in bringing the first ...
... Company Cites Important Progress With Needle-free Vaccine Technology and ... Bird Flu ... March 31, 2008, IRVING, Texas, March 31 Carrington,Laboratories, Inc. ... net loss of $9.8 million, or ($0.90) per basic and,diluted share, ...
... Inc. (NYSE: CRY ),(the "Company"), a biomaterials, ... entered into a credit facility with GE Healthcare,Financial ... in revolving,credit for working capital, acquisitions and other ... at which time the outstanding,principal balance will be ...
Cached Biology Technology:Naglazyme Approved by Japanese Ministry of Health 2Naglazyme Approved by Japanese Ministry of Health 3Naglazyme Approved by Japanese Ministry of Health 4Carrington Reports 2007 Financial Results 2Carrington Reports 2007 Financial Results 3Carrington Reports 2007 Financial Results 4Carrington Reports 2007 Financial Results 5Carrington Reports 2007 Financial Results 6Carrington Reports 2007 Financial Results 7CryoLife Closes on $15 Million Credit Facility with GE Healthcare Financial Services 2CryoLife Closes on $15 Million Credit Facility with GE Healthcare Financial Services 3