Navigation Links
Finding a way to extend tomato shelf-life
Date:2/16/2011

This release is available in Spanish.

Tomatoes spend so much time on shelves and in refrigerators that an estimated 20 percent are lost to spoilage, according to the U.S. Department of Agriculture (USDA). But scientists with USDA's Agricultural Research Service (ARS) are working with colleagues at Purdue University to extend the shelf life of tomatoes. The research also may lead to tomatoes that taste better and are more nutritious.

ARS is USDA's principal intramural scientific research agency, and the research results support the USDA priority of promoting international food security.

Autar Mattoo, a plant physiologist with the agency's Sustainable Agricultural Systems Laboratory in Beltsville, Md., joined with Avtar Handa, a professor of horticulture at Purdue, and Savithri Nambeesan, a graduate student working with Handa, to focus on manipulating a class of nitrogen-based organic compounds known as "polyamines" that act as signals and play a role in the plant's growth, flowering, fruit development, ripening, and other functions. Polyamines also have been linked to the production of lycopene and other nutrients that lower the risks of certain cancers and other diseases.

The researchers wanted to see if they could increase levels of polyamines in tomatoes, and what the effects would be of any increases. They introduced a polyamine-producing yeast gene, known as spermidine synthase, into tomato plants to increase the production of a higher polyamine spermidine that is believed to modulate the plant ripening process.

The results, published in The Plant Journal, showed that introducing the gene not only increased spermidine levels and vegetative growth, but extended the tomato's post-harvest shelf life. Shriveling was delayed by up to three weeks, and there was a slower rate of decay caused by diseases. The tomatoes also had higher levels of lycopene. The study also shows for the first time that spermidine has its own effects independent of other polyamines, extending shelf life and increasing growth.

The use of molecular genetics to enhance tomatoes has faced resistance from the horticulture industry and food-processing companies. But scientists have used the approach to develop improved varieties of corn, soybeans, and cotton.


'/>"/>

Contact: Dennis O'Brien
dennis.obrien@ars.usda.gov
301-504-1624
United States Department of Agriculture - Research, Education and Economics
Source:Eurekalert

Related biology news :

1. Saint Louis University findings: Dont pitch stockpiled avian flu vaccine
2. New findings in Indias Bt cotton controversy: Good for the field, bad for the farm?
3. New findings provide cost, benefit data for Florida citrus industry
4. Findings on pollution damage to human airways could yield new therapies
5. 23andMe presents top 10 most interesting genetic findings of 2010
6. Finding new ways to tackle environmental diseases
7. Findings suggest new cause, possible treatment for multiple sclerosis
8. Biomedical and health professionals converge in D.C. to absorb new findings in science of informatics
9. Listeria clever at finding its way into bloodstream, causing sickness
10. Unexpected findings of lead exposure may lead to treating blindness
11. Gynecologist disputes findings
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/17/2016)... ABI Research, the leader in transformative ... market will reach more than $30 billion by ... Consumer electronics, particularly smartphones, continue to boost the ... reach two billion shipments by 2021 at a ... Research Analyst at ABI Research. "Surveillance is also ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ) - ... ( http://www.apimages.com ) - Germany . The ... refugee identity cards. DERMALOG will be unveiling this device, and a ... next week.   --> Germany . ... new refugee identity cards. DERMALOG will be unveiling this device, and ...
(Date:3/9/2016)... Germany , March 9, 2016 ... country,s government identified that more than 23,000 public service ... or had been receiving their salary unlawfully.    ... African country,s government identified that more than 23,000 public ... name or had been receiving their salary unlawfully.    ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... Elekta is pleased to announce ... industry-leading treatment planning software, is available for clinical release. ... version 5.11 provides significant performance speed enhancements over ... to four times faster than in previous versions of ... standard Monte Carlo algorithm, users ...
(Date:4/28/2016)... ... April 28, 2016 , ... Next week on May ... its first-in-class technologies for tissue stem cell counting and expansion to gene-editing scientists ... Reprogramming & CRISPR-based Genome Engineering in Burlington, Massachusetts. , The attention of most ...
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... of cannabis testing technology at the Spring 2016 Marijuana Business Conference and Expo. ... pesticides, residual solvents, heavy metals, and more. Expo attendees can stop by booth ...
(Date:4/27/2016)... and RESEARCH TRIANGLE PARK, N.C. , ... UTHR ) announced today that Martine Rothblatt ... Therapeutics will provide an overview and update on the ... Annual Health Care Conference. The presentation will ... a.m. Eastern Time, and can be accessed via a ...
Breaking Biology Technology: