" "
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Iron Lady Tomatoes Resist Three Fungal Diseases

Published: Monday, March 18, 2013
Last Updated: Monday, March 18, 2013
Bookmark and Share
Ready to plant: 'Iron Lady' tomato punches out blights.

If the name fits, grow it: "Iron Lady" is the first tomato to resist three major fungal diseases - early blight, late blight and Septoria leaf spot - plaguing New York's growers for years.

For farmers, this new tomato dramatically reduces the need for expensive fungicide.

Iron Lady is available to both producers and home gardeners for the upcoming growing season.

Favoring the Northeast's moist, cool conditions, one or more of these diseases occurs yearly, prompting Martha Mutschler-Chu, Cornell professor of plant breeding and genetics, to create tomatoes that resist late blight and early blight.

However, since those plants could still be defoliated by Septoria leaf spot, Mutscher-Chu worked with research associate Stella Zitter and plant pathologist Tom Zitter to create Septoria resistance.

Experimental hybrids using these "triple blight resistant" tomatoes were successfully grown in trials in North Carolina, West Virginia, Virginia and New York, in a project supported by the Northeast Regional Integrated Pest Management Center.

"We have demonstrated that we have tomato hybrids with good medium fruit that will stand up to these diseases," Mutschler-Chu said. "In order to reduce the need for fungicides, you need to genetically control all three diseases."

Iron Lady, the cross of a "triple resistant" Cornell line and a late blight/early blight line from North Carolina State University, is the first of these hybrids to become commercially available, via High Mowing Organic Seeds.

In addition to the strongest possible resistance to late blight - provided by the combination of two genes, Ph2 and Ph3 - tolerance to early blight and resistance to Septoria leaf spot, the plant also has resistances to verticillium and fusarium wilts, common to most modern tomato varieties.

Early blight tolerance is not as strong as resistance, so the need for fungicides may not be completely eliminated.

But Mutschler-Chu teamed up with professor Tom Zitter to identify a complementary fungicide strategy with the lowest possible environmental impact.

This led to a potential reduction of sprays from weekly application to once or twice a season. That information is available to growers via Cornell's Vegetable MD website.

"Tolerance alone is not enough, spray alone is not enough, but together there is good synergy," Mutschler-Chu said.

Iron Lady is suitable for organic production, and was tested by organic farmers as part of a federal Organic Agriculture Research and Extension-funded project coordinated by Cornell breeder Michael Mazourek.

He said disease-resistant tomatoes were identified as a top priority for organic growers, who currently use copper to control blight, a solution that can be just as bad for the environment as chemical fungicides.

"This represents a really valuable tool for growers," Mazourek said. "And the tomatoes are head and shoulders above those you would find shipped to the grocery store."

Mutschler-Chu said she wanted to make Iron Lady available to growers quickly because of the real and immediate need. "We have even better lines coming along," she said. "We are testing second-generation hybrids now."

While breeding the new lines, Mutschler-Chu and her team created molecular markers that can be used to detect the presence of Ph2 and Ph3 in plants.

"Use of markers cuts in half the number of generations it takes to breed," she said. "Development of a similar marker for the Septoria resistance gene is nearing completion."

Mutschler-Chu is sharing her discoveries with scientists and seed companies, so that the resistance traits can be incorporated into other varieties.

This project was supported in part by a New York Specialty Crop grant.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,900+ scientific posters on ePosters
  • More Than 4,200+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Proteins Seek, Attack, Destroy Tumor Cells in Bloodstream
Using white blood cells to ferry potent cancer-killing proteins through the bloodstream virtually eliminates metastatic prostate cancer in mice, Cornell researchers have confirmed.
Friday, January 15, 2016
Tumor-suppressing Gene Lends Insight to Cancer Treatment
Researchers have found that delicate replication process derails if a gene named PTEN has mutated or is absent.
Tuesday, July 14, 2015
Synthetic Immune Organ Produces Antibodies
Cornell engineers have created a functional, synthetic immune organ that produces antibodies and can be controlled in the lab, completely separate from a living organism.
Friday, June 12, 2015
On Planes, Savory Tomato Becomes Favored Flavor
Study shows the effect that airplane noise has on passengers' taste preferences.
Friday, May 15, 2015
$5.5M NSF Grant Aims to Improve Rice Crops with Genome Editing
Researchers to precisely target, cut, remove and replace DNA in a living cell to improve rice.
Friday, May 08, 2015
'Shield' Gives Tricky Proteins a New Identity
Solubilization of Integral Membrane Proteins with high Levels of Expression.
Saturday, April 11, 2015
DNA Safeguard May Be Key In Cancer Treatment
Cornell researchers have developed a new technique to understand the actions of key proteins required for cancer cells to proliferate.
Monday, March 09, 2015
A ‘STAR’ is Born: Engineers Devise Genetic 'On' Switch
A new “on” switch to control gene expression has been developed by Cornell scientists.
Tuesday, February 03, 2015
Bacteria Be Gone!
New technology keeps bacteria from sticking to surfaces.
Monday, January 19, 2015
On the Environmental Trail of Food Pathogens
Learning where Listeria dwells can aid the search for other food pathogens.
Tuesday, December 23, 2014
Chemists Show That ALS is a Protein Aggregation Disease
Using a technique that illuminates subtle changes in individual proteins, chemistry researchers at Cornell have uncovered new insight into the underlying causes of Amyotrophic Lateral Sclerosis (ALS).
Thursday, October 23, 2014
Genetics Used to Improve Plants for Bioenergy
An upcoming genetics investigation into the symbiotic association between soil fungi and feedstock plants for bioenergy production could lead to more efficient uptake of nutrients, which would help limit the need for expensive and polluting fertilizers.
Thursday, August 28, 2014
Computer Model Reveals Cancer's Energy Source
Findings focused on the energy-making process in cancer cells known as the Warburg Effect.
Tuesday, August 19, 2014
A New Player in Lipid Metabolism Discovered
Specially engineered mice gained no weight, and normal counterparts became obese on the same high-fat, obesity-inducing Western diet.
Monday, August 18, 2014
Ingested Nanoparticles May Damage Liver
Although nanoparticles in food, sunscreen and other everyday products have many benefits, researchers from Cornell are finding that at certain doses, the particles might cause human organ damage.
Tuesday, August 12, 2014
Scientific News
Criminal Justice Alcohol Program Linked to Decreased Mortality
Institute has announced that in the criminal justice alcohol program deaths dropped by 4.2 percent over six years.
Charting Kidney Cancer Metabolism
Changes in cell metabolism are increasingly recognized as an important way tumors develop and progress, yet these changes are hard to measure and interpret. A new tool designed by MSK scientists allows users to identify metabolic changes in kidney cancer tumors that may one day be targets for therapy.
Improving Regenerative Medicine
Lab-created stem cells may lack key characteristics, UCLA research finds.
Tick Genome Reveals Secrets of a Successful Bloodsucker
NIH has announced that decipher the genome of the blacklegged tick which could lead to new tick control methods.
"Dark Side" of the Transcriptome
New approach to quantifying gene "read-outs" reveals important variations in protein synthesis and has implications for understanding neurodegenerative diseases.
Individuals' Medical Histories Predicted by their Noncoding Genomes
Researchers have found that analyzing mutations in regions of the genome that control genes can predict medical conditions such as hypertension, narcolepsy and heart problems.
'Molecular Movie' Opens Door to New Cancer Treatments
An international team of scientists led by the University of Liverpool has produced a 'structural movie' revealing the step-by-step creation of an important naturally occurring chemical in the body that plays a role in some cancers.
New Source of Mutations in Cancer
Recently, a new mutation signature found in cancer cells was suspected to have been created by a family of enzymes found in human cells called the APOBEC3 family.
Advancing Synthetic Biology
Living systems rely on a dizzying variety of chemical reactions essential to development and survival. Most of these involve a specialized class of protein molecules — the enzymes.
Madison Researchers Begin Work on Zika Virus
Work will start with basic questions about Zika virus infection.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,900+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,200+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!