Top 5 -yesterday
- UK: Grower reduces greenhouse temperature by more than 6°C during heatwave with no cooling, fog systems
- Understanding the profitability of your greenhouse
- Agave: The new drought-tolerant California crop?
- Patromex and DIDIHU partnership invests in modern plant for value-added coconut substrates
- US: Larry Ellison is feeding Hawaii from his high-tech hydroponic farm on Lanai
Top 5 -last month
- Vertical farming technologies tool in researching and fighting diseases
- German retailer Kaufland and horti-family Reichenspurner open new greenhouse
- "Water is the new gold"
- Growing strawberries from seeds becoming increasingly popular
- Higher productivity and earliness are the story behind these pink greenhouses
ARS Ramping Up Pterostilbene in Crops:
Researchers find way to boost crop's beneficial health properties
ARS is the principal intramural scientific research agency of the U.S. Department of Agriculture. ARS molecular biologists Scott R. Baerson and Zhiqiang Pan and chemist Agnes Rimando headed the study. They and plant physiologist Franck Dayan, a coauthor, are with the ARS Natural Products Utilization Research Unit in Oxford, Miss. Another coauthor, ARS plant pathologist James Polashock, works with the agency’s Genetic Improvement of Fruits and Vegetables Lab in Beltsville, Md., but is based in Chatsworth, N.J.
There are two stilbenes—resveratrol and pterostilbene—which may possess similar purported beneficial health properties. During their work, the team showed that a previously characterized and patented gene called SbOMT3, which they had isolated from the sorghum plant, is capable of converting resveratrol to pterostilbene. They then built on that conversion activity by co-expressing SbOMT3 with a stilbene-synthase gene, AhSTS3, that had been isolated from the peanut plant.
For the proof-of-concept study, both genes were successfully incorporated into the chromosomes of two different model host plants, Arabidopsis and tobacco. The two-gene strategy generated transgenic plants that were able to produce pterostilbene, the authors reported. The study results were published in Plant Biotechnology Journal in 2012.
An ARS patent, issued in 2010, describes the ability of SbOMT3 to produce transgenic plants that express pterostilbene, and describes the two-gene strategy.
Read more about this research in the November/December 2013 issue of Agricultural Research magazine.
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