Navigation Links
Unlike we thought for 100 years: Molds are able to reproduce sexually
Date:1/8/2013

For over 100 years, it was assumed that the penicillin-producing mould fungus Penicillium chrysogenum only reproduced asexually through spores. An international research team led by Prof. Dr. Ulrich Kck and Julia Bhm from the Chair of General and Molecular Botany at the Ruhr-Universitt has now shown for the first time that the fungus also has a sexual cycle, i.e. two "genders". Through sexual reproduction of P. chrysogenum, the researchers generated fungal strains with new biotechnologically relevant properties - such as high penicillin production without the contaminating chrysogenin. The team from Bochum, Gttingen, Nottingham (England), Kundl (Austria) and Sandoz GmbH reports in PNAS. The article will be published in this week's Online Early Edition and was selected as a cover story.

Only penicillin producer

About 100 years ago, Alexander Fleming demonstrated the formation of penicillin in Penicillium chrysogenum. To date, there is no other known producer of the antibiotic penicillin, which has an annual global market value of about six billion Euros.

Combining genes and breeding offspring with new properties

Not only animals and plants, but also many microorganisms such as fungi and algae can reproduce sexually. The advantage: the progenies possess a combination of genes from both mating partners and thus have new properties. Sexual reproduction in fungi is, however, not the rule. Most reproduce via spores which, in the case of moulds, occur as white, green or black deposits on spoiled food. These spores only bear the genes of one parent fungus. "Five years ago we already detected the existence of so-called sex genes in Penicillium chrysogenum", says Prof. Kck. Now, the researchers have discovered specific environmental conditions in which the fungus actually reproduces sexually. The decisive thing was to breed fungal strains in the dark under oxygen deprivation condition
'/>"/>

Contact: Prof. Dr. Ulrich Kck
Ulrich.Kueck@rub.de
49-234-322-8212
Ruhr-University Bochum
Source:Eurekalert

Page: 1 2

Related biology news :

1. Climate warming unlikely to cause near-term extinction of Amazon trees, but threats remain
2. Warming climate unlikely to cause extinction of ancient Amazon trees, study finds
3. Report: Cleanup of some contaminated groundwater sites unlikely for decades
4. Research warns Asia unlikely to achieve climate, poverty goals unless womens rights are recognized
5. Nearly one-tenth of hemispheres mammals unlikely to outrun climate change
6. Most-used diabetes drug works in different way than previously thought
7. A better thought-controlled computer cursor
8. Empathy represses analytic thought, and vice versa
9. The fin whale, under more threat in the Mediterranean than thought
10. UConn researchers discover that red tide species is deadlier than first thought
11. Our coral reefs: In trouble - but tougher than we thought
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... Va. , Dec. 15, 2014 ... to make it easier to detect and prevent ... Today the agency started performing an ... capability will validate the authenticity of purchased microcircuits ... The new quality control measures will be conducted ...
(Date:12/17/2014)... -- Automation is fundamentally transforming the travel experience and ... borders. Over the past decade, ePassports, biometric readers, ... to self process through border control via eGates ... increasing number of airports, seaports, and land borders ... Maxine Most , Principal at Acuity Market ...
(Date:12/11/2014)... , Dec. 10, 2014  That blood pressure plays ... a while. Hypertension – the medical term for high blood ... early 1800s, and the inflatable cuff that,s used in measuring ... however, mean there,s nothing new about hypertension, its triggers and ... beliefs about the condition and the best ways to treat ...
Breaking Biology News(10 mins):Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4
... fish hatched at Michigan State University has a new look. A ... a number of improvements on the fish, including the ability to ... The fish now has the ability to glide through the water ... that can aid in the cleaning of our lakes and rivers. ...
... NEW YORK January 16, 2013 EcoHealth Alliance, a ... issues, released new research on Ebola virus in fruit bats ... a monthly publication by the Centers for Disease Control and ... in 4% of the 276 bats scientists screened in Bangladesh. ...
... start at the launch pad or even in orbit. They ... instruments that promise to expand our view and understanding of ... lay the groundwork for the Aerosol-Cloud-Ecosystem (ACE) mission, a satellite ... to learn about clouds and aerosols," said ACE science lead ...
Cached Biology News:New robotic fish glides indefinitely 2Recent study suggests bats are reservoir for ebola virus in Bangladesh 2PODEX experiment to reshape future of atmospheric science 2PODEX experiment to reshape future of atmospheric science 3PODEX experiment to reshape future of atmospheric science 4PODEX experiment to reshape future of atmospheric science 5
(Date:12/19/2014)... MA (PRWEB) December 18, 2014 Reports ... in the United States suffer from one or more ... asthma, or cancer. Medication can address some of these ... daily activities that many sufferers face. While implanted nerve ... and stimulate the whole nerve, which can induce side ...
(Date:12/19/2014)... With only 2 weeks left of ... Sartorius Biohit products . The product specials include Buy ... Pipette Trade-in Program, and free pipette tips. , Sartorius ... the world. They are ideal for lab technicians performing ... ,     Full volume range of 0.1 uL to ...
(Date:12/19/2014)... , Dec. 18, 2014 Relmada Therapeutics, Inc. ... the treatment of chronic pain, announced the results of ... "This was a transformational year in Relmada,s history ... for our company," said Sergio Traversa , chief ... have executed on key financial, human resource and clinical ...
(Date:12/17/2014)... 2014 Achim Noack has been named ... Group. In this position, Noack will assist Jerry Stoller, ... develop marketing strategy and supervise global marketing management and ... has tremendous knowledge and experience in the crop protection ... experience and innovative thinking will be a great asset ...
Breaking Biology Technology:Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 2
... , , , , , , , ... 4308 915.021 11/1999 , , , , , , ... Cell line , NIH 3T3, mouse embryo, ... Plasmid pEGFP-N1 (in bidistilled H 2 O), , , ...
... Multiporator / Electroporator 2510 , , , , , , , ... Protocol No. 4308 915.522 03/2002 , , ... , , Microorganism , ... Cell type , Bacteria, gram positive, , ...
... Electroporator 2510 , , , , , , , , ... Protocol No. 4308 915.523 03/2002 , , , , ... , Microorganism , Mycobacterium avium, ... Bacteria, gram positive, , , ...
Cached Biology Technology:NIH 3T3 2Mycobacterium smegmatis 2Mycobacterium avium 2
Request Info...
Request Info...
Ready for formulation or direct injection into animals Provided in convenient 100, 250, 1000 and 10,000 nmol sizes HPLC purified, salt free, sterile filtered, and endotoxin tested ...
... siRNA service provides the premium quality siRNAs ... Custom siRNAs can be readily ordered online ... sequence, or by providing the sense and ... Silencer Validated and Silencer Pre-designed siRNAs, which ...
Biology Products: