Navigation Links
Same-Sex Mating Discovered in a Toxic Fungus

An infectious fungus has been found to defy the most basic tenet of sexual reproduction ?that successful mating requires individuals of the opposite sex, according to Howard Hughes Medical Institute researchers at Duke University Medical Center.

In the April 21, 2005, issue of Nature, the researchers reported that, in the infectious fungus Cryptococcus neoformans, members of the same "sex" can mate and produce offspring. Infection with the fungus can prove life-threatening in humans, and the findings might improve understanding of the fungal biology that underlies the infectious process, the researchers said. Discovery of the same-sex mating might also help elucidate basic principles governing the evolution of sex, they said.

"Sex is generally beneficial as a means to produce offspring with different gene combinations that can adapt more rapidly to new environments," said HHMI investigator Joseph Heitman, M.D., Ph.D., of Duke, senior author of the study.

"The findings suggest for the first time that the fungus has developed a novel type of sexual cycle, allowing sexual reproduction between members of the same mating type," he added. "That ability might confer an advantage for the fungus because patients infected with it predominantly harbor a single mating type, reducing the possibility of normal fungal sexual reproduction."

The potentially life-threatening fungus C. neoformans invades the central nervous system to cause disease, most commonly in immune-compromised patients such as organ transplant recipients and cancer patients -- whose immune systems are crippled by immunosuppressive drugs or chemotherapy -- and people with HIV/AIDS. The fungus' global importance as a health threat has therefore risen in parallel with the increased use of such therapies and with the worldwide HIV/AIDS pandemic.

In plants and animals, sexual identity is governed by sex chromosomes. In fungi, however, sexual identity is determined by so-called
'"/>

Source:DukeMedNews


Page: 1 2 3

Related biology news :

1. Sexual cooperation: Mating increases longevity in ant queens
2. The price of vanity: Mating with showy males may reduce offsprings ability to fight off pathogens
3. Newly Discovered Compound Blocks Known Cancer-Causing Protein
4. A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years
5. Newly Discovered Branding Process Helps Immune System Cells Pick Their Fights
6. New Species of Coral Discovered Off Southern California
7. Newly Discovered Role for Heart Response Enzyme May Yield Better Heart Failure Therapy
8. Solution to Pollution: New Bacteria Eats Toxic Waste
9. Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimers, Parkinsons Disease
10. Toxic flood lifts lid on common urban pollution problem
11. Toxic molecule may cause most common type of muscular dystrophy
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Same Sex Mating Discovered Toxic Fungus

(Date:7/28/2014)... research has identified areas of the Earth that are ... change. , Europe is particularly vulnerable, as it has ... per cent, of any continent in ,refugia, areas ... environmental conditions remain relatively constant during times of great ... are mostly in Scandinavia and Scotland. , The ...
(Date:7/28/2014)... He calls himself the bug hunter, but the ... only be found and identified with special methods and ... Kansas State Veterinary Diagnostic Laboratory at Kansas State University, ... porcine enterovirus G, which is an important find in ... in cells, but didn,t know what it was," Hause ...
(Date:7/28/2014)... study found that 73 percent of adult survivors of ... metabolic syndrome and related health problems by failing to ... current issue of the journal Cancer . , ... childhood cancer in the study had metabolic syndrome, an ... pressure, abdominal obesity, elevated triglyceride and other abnormalities that ...
Breaking Biology News(10 mins):Study finds Europe's habitat and wildlife is vulnerable to climate change 2Researcher using next-generation sequencing to rapidly identify pathogens 2Researcher using next-generation sequencing to rapidly identify pathogens 3Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3
... under the microscope: the relation between biology and genetics ... the main themes of the International Workshop on the ... Bologna, May 20 to 22, with leading scientists currently ... explain their recent findings to the audience. The meeting ...
... technology, researchers are getting a better understanding of a physiological ... provide quick access to a lot of oxygen, can survive ... so efficient that resting insects stop taking in air as ... Hetz of Humboldt University in Berlin, Germany. This allows them ...
... growth of blood vessels critical to the spread of ... discovered by researchers from the U.S. Department of Energy's ... a beamline at the Advanced Photon Source. , Growing ... angiogenesis ?is important in growth, development and wound healing. ...
Cached Biology News:Music genes and musical geniuses 2Breathing easy: When it comes to oxygen, a bug's life is full of it 2Breathing easy: When it comes to oxygen, a bug's life is full of it 3Breathing easy: When it comes to oxygen, a bug's life is full of it 4Cancer cells forming blood vessels send their copper to the edge 2Cancer cells forming blood vessels send their copper to the edge 3
(Date:7/28/2014)... It’s a hard truth: Nearly half of recent ... post-secondary education are failing to obtain a diploma or certificate ... according to an analysis by The Resume Place , ... choice of college majors, which leads to underemployment, unemployment or ... 51.7 percent of post-9/11 veterans using GI Bill ...
(Date:7/28/2014)... 2014 Research and Markets has announced ... 2014-2018" report to their offering. ... a technique used to determine the size of a particle ... crucial to analyze the size of particles as it can ... is performed to determine the behavior and nature of a ...
(Date:7/25/2014)... 25, 2014 Amgen (NASDAQ: AMGN ... a $0.61 per share dividend for the third quarter ... 5, 2014, to all stockholders of record as of ... About Amgen Amgen is committed to unlocking ... illnesses by discovering, developing, manufacturing and delivering innovative human ...
(Date:7/25/2014)... New York (PRWEB) July 25, 2014 ... Market Research, "Biological Drugs Market - Global Industry Analysis, ... the global biological drugs market is estimated at USD ... at a CAGR of 10.1% from 2014 to 2020, ... in 2020. , The biological drugs market is witnessing ...
Breaking Biology Technology:Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 2Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 3Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 4Global Particle Size Analysis Market 2014-2018 2Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Biological Drugs Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Biological Drugs Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3
... ABC,s Dancing with the Stars champion Drew Lachey has teamed ... launch the first national online video contest to increase ... The contest invites people to ... that help them stay active and healthy., ...
... EXTON, Pa., May 6 BioTrends Research Group,Inc. ... comprehensive insight into the management of,renal anemia and ... and Dialysis. These reports provide information from 105 ... -- data were collected,through an online survey fielded ...
... May 6 MedImmune today announced that,it ... the company,s expanded product,pipeline in the United ... core scientific,research that underpins this development. Jacqueline ... development team leadership; Lorin,Roskos, Ph.D. has been ...
Cached Biology Technology:Dancing With the Stars' Drew Lachey and Novo Nordisk Launch Dancin' to Change Diabetes National Video Contest 2BioTrends Releases Two Publications - TreatmentTrends(TM): Nephrologists and TreatmentTrends(TM): Renal Dietitians - Highlighting Market Trends for Renal Anemia, Hyperphosphatemia, and Secondary Hyperparathyroidism 2BioTrends Releases Two Publications - TreatmentTrends(TM): Nephrologists and TreatmentTrends(TM): Renal Dietitians - Highlighting Market Trends for Renal Anemia, Hyperphosphatemia, and Secondary Hyperparathyroidism 3MedImmune Fortifies Strategic Scientific Portfolio Management and International Leadership With New Executive Appointments 2MedImmune Fortifies Strategic Scientific Portfolio Management and International Leadership With New Executive Appointments 3