Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wild tomato species focus of antioxidant study

10.10.2014

Results can help breeders improve health-related traits in cultivated tomatoes

Tomatoes are known to be rich in antioxidants such as vitamin C, lycopene, β-carotene, and phenolics. Antioxidants, substances capable of delaying or inhibiting oxidation processes caused by free radicals, are of interest to consumers for their health-related contributions, and to plant breeders for their ability to provide plants with natural resistance to biotic and abiotic stresses.


Scientists looked to wild tomato varieties such as Solanum peruvianum to inform breeding practices that increase valuable antioxidants.

Credit: Photo courtesy of Sami Doğanlar.

While tomato domestication and breeding programs have typically focused on traits such as fruit weight, color, shape, and disease resistance, scientists are now looking at ways to develop tomato cultivars that boast higher antioxidant traits.

Plant breeders know that the best source for improvement of a crop plant is often its wild species. Wild species retain allelic (trait) diversity, which is lost during domestication and breeding. To date, wild tomato species have been widely used for improvement of tomato disease resistance, but have not been extensively explored for health-related traits.

Scientists from the Department of Molecular Biology and Genetics at Izmir Institute of Technology in Turkey published a unique study in HortScience that compared antioxidant traits for wild tomatoes with those of cultivated varieties. Their results, they say, can be used to design a breeding program with the purpose of improving antioxidant characteristics in elite tomato lines.

A research team led by Professor Sami Doğanlar analyzed three different interspecific populations of Solanum peruvianum, Solanum habrochaites, and Solanam pimpinellifolium for antioxidant and agronomic traits. They tested each population for total water-soluble antioxidant activity, phenolic content, fruit weight, fruit shape, fruit color, and vitamin C content.

"Our analyses showed that the Solanum habrochaites population provided the best starting material for improvement of water-soluble antioxidant activity and phenolics content with 20% and 15% of the population, respectively, significantly exceeding the parental values for these traits," the scientists wrote.

The Solanum habrochaites population also contained individuals that had nearly 2-fold more water-soluble antioxidant activity and phenolic content than cultivated tomato. The Solanum peruvianum population was determined to be best for improvement of vitamin C content, with 3-fold variation for the trait and individuals, which had twice as much vitamin C as cultivated tomato.

"Our work shows that wild tomato species harbor alleles that could be useful for improvement of antioxidant traits in cultivated tomato," Doğanlar noted. "In fact, some of the backcross progeny from the populations used in this study could be used for breeding of these traits."

###

The complete study and abstract are available on the ASHS HortScience electronic journal web site: http://hortsci.ashspublications.org/content/49/8/1003.abstract

Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education, and application. More information at ashs.org.

Michael W. Neff | Eurek Alert!

More articles from Agricultural and Forestry Science:

nachricht Climate change, population growth may lead to open ocean aquaculture
05.10.2017 | Oregon State University

nachricht New machine evaluates soybean at harvest for quality
04.10.2017 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Salmonella as a tumour medication

HZI researchers developed a bacterial strain that can be used in cancer therapy

Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

3rd Symposium on Driving Simulation

23.10.2017 | Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

 
Latest News

Microfluidics probe 'cholesterol' of the oil industry

23.10.2017 | Life Sciences

Gamma rays will reach beyond the limits of light

23.10.2017 | Physics and Astronomy

The end of pneumonia? New vaccine offers hope

23.10.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>