Navigation Links
Black aspergilli species responsible for infecting corn identified
Date:9/30/2010

This release is available in Spanish.

U.S. Department of Agriculture (USDA) scientists in Athens, Georgia, have reported for the first time that several species of Aspergillus niger, or black aspergilli, are capable of infecting corn and peanuts as endophytes. The researchers also showed that, under laboratory conditions, these species produced mycotoxins.

Using a molecular procedure they developed, USDA Agricultural Research Service (ARS) research leader Charles Bacon, microbiologist Dorothy Hinton, and Edwin Palencia, a graduate student in the Department of Plant Pathology of the University of Georgia in Athens, identified more than 18 species of black aspergilli, several of which have the potential to produce mycotoxins.

ARS is USDA's principal intramural scientific research agency, and this research supports the USDA priority of ensuring food safety.

Bacon and his team at the ARS Richard B. Russell Research Center in Athens also found that several A.niger species that were thought to be incapable of producing mycotoxins can produce ochratoxinscarcinogenic mycotoxins that can affect humans, livestock, and poultry. These A. niger species were deemed as non-producers of mycotoxins based on in vitro culture media, but on corn they were indeed producers. The findings from that research were published in the journal Toxins.

A. niger, one of a group of black-spored fungi, is a common contaminant on corn, peanuts, several other important food and feed ingredients, and products made from them.

Bacon and his team's work suggest that species of A. niger are also contributors to the occurrence of fumonisins in corn, other cereals and food items. Fumonisins are a class of mycotoxins that are known to be carcinogenic and are primarily produced by the Fusarium species of fungi. Some of the black aspergilli identified in this study are also producers of this mycotoxin.

According to the research team, the A. niger complex of species acts within corn and peanuts as an endophyte, living within the tissues of the plant, but causing no harm to the plant itself. Three species of A. niger are identified in U.S. corn and peanuts as symptomless endophytes, which suggests the potential for concern as pathogens and as food safety hazards.

Black aspergilli, generally viewed as post-harvest pathogens, produce rots of grapes, corn and numerous other fruits and grain.


'/>"/>

Contact: Sharon Durham
Sharon.Durham@ars.usda.gov
301-504-1611
United States Department of Agriculture -- Research, Education and Economics
Source:Eurekalert

Related biology news :

1. Study: urban black bears live fast, die young
2. Chemopreventive agents in black raspberries identified
3. Biologists solve mystery of black wolves
4. New blackberry introduced
5. Scientists find black gold amidst overlooked data
6. Antioxidants in Midwestern black raspberries influenced by production site
7. System that regulates blood pressure is amiss in some healthy, young blacks
8. Black rat does not bother Mediterranean seabirds
9. Black carbon a significant factor in melting of Himalayan glaciers
10. Skunks strategy not just black and white
11. Beyond sunlight: Explorers census 17,650 ocean species between edge of darkness and black abyss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
(Date:4/14/2016)... Israel , April 14, 2016 ... Authentication and Malware Detection, today announced the appointment of ... assumed the new role. Goldwerger,s leadership appointment ... on the heels of the deployment of its platform ... BioCatch,s behavioral biometric technology, which discerns unique cognitive and ...
(Date:3/31/2016)... 31, 2016  Genomics firm Nabsys has completed a ... Barrett Bready , M.D., who returned to the company ... technical leadership team, including Chief Technology Officer, John ... Steve Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... Ginkgo Bioworks , a leading organism design company ... as one of the World Economic Forum,s Technology ... companies. Ginkgo Bioworks is engineering biology to manufacture ... the nutrition, health and consumer goods sectors. The ... Fortune 500 companies to design microbes for their ...
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... the release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” ... and retention in this eBook by providing practical tips, tools, and strategies for ...
(Date:6/23/2016)... 23, 2016 Houston Methodist Willowbrook Hospital ... Sports Association to serve as their official health ... Methodist Willowbrook will provide sponsorship support, athletic training ... association coaches, volunteers, athletes and families. ... Sports Association and to bring Houston Methodist quality ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the Industry Network for ... Design Lab . Located in Pasadena, Calif., the Design Lab’s mission is to ... are designed, built and brought to market. , The Design Lab is Supplyframe’s ...
Breaking Biology Technology: