Navigation Links
Unique soybean lines hold promise for producing allergy-free soybeans

Researchers have isolated two Chinese soybean lines that grow without the primary protein linked to soy allergies in children and adults. The two lines already are adapted to Illinois-like conditions and will be given away to breeders seeking to produce new varieties of allergy-free soybeans without genetic engineering.

Crop scientists at the University of Illinois at Urbana-Champaign and the USDA-Agricultural Research Service's Donald Danforth Plant Science Center in St. Louis screened more than 16,000 soybean lines kept in the USDA's National Soybean Germplasm Collection. The findings will appear later this year in the journal Crop Science.

The two soybean lines (PI 567476 and PI 603570A) contain virtually identical genetic mutations that do not contain the leading allergy-causing P34 protein, which consists of 379 amino acids, said Theodore Hymowitz, emeritus professor of plant genetics in the crop sciences department at the U. of I.

"We are releasing this information with no patents so that companies and breeders involved with soybeans can incorporate these two lines as quickly as possible," Hymowitz said. Companies in Japan, Canada and across the United States have been following the research effort, he added.

The research, which was funded primarily by the Illinois-Missouri Biotechnology Alliance, went through two stages.

First, using a specially developed immunochemistry approach, Hymowitz's post-doctoral assistant Leina M. Joseph examined 100 lines of soybeans per day for nine months from the UI-based collection. Seeds were crushed, treated and placed on a membrane for screening. A second screening using stronger antibodies and protein gels was done to confirm the absence of P34 in the two domestic lines, Joseph said.

After the two lines were isolated, seeds were sent to the Danforth Center for additional molecular analysis to determine why P34 was absent. Six identical genetic mutations were found in each, indi cating the two lines may be related, Hymowitz said.

"The lack of the protein was confirmed by more-detailed two-dimensional protein assays," said Eliot M. Herman, a lead scientist at Danforth who probed the seeds with post-doctoral researcher Monica A. Schmidt. "We then isolated the gene responsible for the lesion, and we found there was a single significant change in the gene's sequence that likely produced a protein which could not be made as a stable product."

Herman discovered P34 in the early 1990s and in 2003 had successfully used a gene-silencing technique to create a soybean line in which P34 was "knocked out." However, because of public resistance to genetically modified products researchers have been seeking a more traditional approach. Because the newly identified lines occur naturally, they can be successfully crossed into other soybean lines "without any biotechnology-derived component," the researchers noted.

"Soybeans are slowly but surely increasingly being used in the foods we eat, and with that we are noticing an increase in the number of children and adults that have allergies to soybeans," Hymowitz said.

Currently, 6 percent to 8 percent of children are allergic to soy-based products, including infant formulas, while 2 percent of adults have had allergic reactions, which range from harmless skin reactions and gastrointestinal irritation to more serious facial swelling, shortness of breath, difficulty swallowing and fainting.

Avoiding soy products is becoming more difficult because of soy's use as fillers and components of many menu items. While people can read labels before preparing meals at home, avoiding soy at restaurants isn't as easy, Hymowitz said.


'"/>

Source:University of Illinois at Urbana-Champaign


Related biology news :

1. Breast Cancer May Be Uniquely Sensitive To Inhibitors Of PI3K Pathway
2. Unique library of plant genes germinates, takes root at UNC
3. Invitrogen Launches i-Path -- A Unique Systems Biology Platform at BIO 2005
4. Uniquely human component of language found in gregarious birds
5. Unique equine cataract surgery offered on routine basis
6. Unique dual target specificity of kinase inhibitor key for success against cancer
7. Unique gene regulation gives chilly bugs survival advantage at bottom of the world
8. Unique tomatoes tops in disease-fighting antioxidants
9. Techniques available to detect soil that inhibits destructive soybean pest
10. Current human embryonic stem cell lines contaminated UCSD/Salk team finds
11. HIV-1 spread through six transmission lines in the UK
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)...  The Allen Institute for Cell Science today announces ... portal and dynamic digital window into the human cell. ... application of deep learning to create predictive models of ... a growing suite of powerful tools. The Allen Cell ... publicly available resources created and shared by the Allen ...
(Date:4/4/2017)... April 4, 2017   EyeLock LLC , a ... the United States Patent and Trademark Office (USPTO) has ... the linking of an iris image with a face ... represents the company,s 45 th issued patent. ... very timely given the multi-modal biometric capabilities that have ...
(Date:3/30/2017)... 2017 The research team of The Hong ... fingerprint identification by adopting ground breaking 3D fingerprint minutiae recovery and ... speed and accuracy for use in identification, crime investigation, immigration control, ... ... A research team led ...
Breaking Biology News(10 mins):
(Date:5/24/2017)... and WASHINGTON, DC, USA (PRWEB) , ... May 23, 2017 , ... ... of the economy as well as an enabler of life-saving medical and other vital ... optics and photonics . They joined others in the scientific community today in responding ...
(Date:5/23/2017)... ... ... A recent survey conducted by the Weed Science Society of America (WSSA) ... categories of broadleaf crops, fruits and vegetables, while common lambsquarters ranks as the weed ... in the 2016 survey, the second conducted by WSSA. A 2015 baseline survey ...
(Date:5/23/2017)... ... May 22, 2017 , ... A new Technology ... Diego, California, this August will feature high-level speakers on quantum devices, graphene electronic ... Optics and Photonics, the largest multidisciplinary optical sciences meeting in North America, will ...
(Date:5/23/2017)... ... 2017 , ... Bacterial biofilms, surface adherent communities of bacteria that are encased ... food poisoning and catheter infections to gum disease and the rejection of medical implants. ... dollars per year, there is currently a paucity of means for preventing their formation ...
Breaking Biology Technology: