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BTD Forums  /  Journal Club and Literature Review  /  Adding Trehalose to Rice
Posted by: C_Sharp, Saturday, August 24, 2013, 2:28am
http://www.scientificamerican.com/article.cfm?id=sugar-genes-make-rice-cro
Posted by: yaeli, Saturday, August 24, 2013, 4:28am; Reply: 1
It is beneficial for the E. coli, it is beneficial for us, it is beneficial for rice...

This makes me recall where I come from. Usually I consider Physician and Lawyer to be the most tempting and morally dangerous occupations that exist. Geneticist is another. In my youth I became fascinated by Mendel's Laws and decided to become a geneticist. Later I mananged, for odd reasons and what looked then like coincidences (I don't believe in coincidences) to divert my development to other directions. ("Frailty, thy name is Woman"  >:( (shrug)(evil)  ??) :o  )

Maybe I did right4myself ? Who knows. (pray)(sunny)
Posted by: Lola, Saturday, August 24, 2013, 5:46am; Reply: 2
Quoted Text
Although the simple sugar is common in many bacteria and insects, few plants manufacture the molecule. Those that do, however, are classified as "resurrection" plants because of their ability to survive long periods without water and revive quickly once moisture becomes available.


this struck me from Dr D s talk to NDs in NY
fascinating!

don t we all need a bit of resurrection from time to time!  ;D
Posted by: Goldie, Saturday, August 24, 2013, 1:13pm; Reply: 3
no wonder TC works to revlice us too.. 8)
Posted by: RedLilac, Saturday, August 24, 2013, 1:28pm; Reply: 4
How do we know if the rice we purchase in the store is the Indica variety?
Posted by: C_Sharp, Saturday, August 24, 2013, 2:43pm; Reply: 5
Quoted from RedLilac
How do we know if the rice we purchase in the store is the Indica variety?


If you are buying a variety of long grain rice (for instance basmati) it probably an Indica rice.

As the name implies it is from the Indian subcontinent and is the primary rice grown there. This is in contrast to japonica rice which are short grain rice varieties that originated from Japan and tend to be the common rice there.

Posted by: Lloyd, Saturday, August 24, 2013, 2:48pm; Reply: 6
No one complaining because it is a GMO?   ;)

Quoted Text
scientists have successfully produced a genetically modified form of rice that can survive drought, high salinity and temperature changes better than its traditional counterparts can.


Quoted Text
Despite the encouraging findings, trehalose-containing rice will not be planted outside a laboratory for at least a few years. "We still have a lot to learn about trehalose in important crop plants," Garg notes. But if the plants are judged safe and large-scale production is feasible, the modified rice could help to feed the world's burgeoning population. Says study co-author Ray J. Wu, "Anything we can do to help crop plants cope with environmental stresses will also raise the quality and quantity of food for those who need it most."
Posted by: Averno, Saturday, August 24, 2013, 3:05pm; Reply: 7
Quoted from Lloyd
No one complaining because it is a GMO?   ;)



My first thought upon reading the article. Imagine... genetic modification for good, not evil  ;D

And aren't we "genetically modifying" ourselves  via our recommended supplements?

"Change Your Genetic Destiny" is more than just a catchy title.

Posted by: Lloyd, Saturday, August 24, 2013, 3:42pm; Reply: 8
Quoted from Averno


And aren't we "genetically modifying" ourselves  via our recommended supplements?



Modifying genetic expression via epigenetic function happens. Period.

Diet and supplements are an attempt to modify in a helpful manner.

The difference with a GMO is that the gene is modified, rather than it's expression (although that is also possible).


Posted by: yaeli, Saturday, August 24, 2013, 3:48pm; Reply: 9
Quoted from Lloyd
No one complaining because it is a GMO?   ;)
Do they engineer the actual rice crops? The article is from 2002 - did they at any stage apply this in actual agriculture?

Posted by: yaeli, Saturday, August 24, 2013, 4:09pm; Reply: 10
Quoted from Lloyd
Modifying genetic expression via epigenetic function happens. Period.

Diet and supplements are an attempt to modify in a helpful manner.

The difference with a GMO is that the gene is modified, rather than it's expression (although that is also possible).
All this we do under Dr. D's "umbrella".

For all other genetically engineered foods we need to establish a GMO Koshering Bureau (GKB).

Posted by: C_Sharp, Saturday, August 24, 2013, 4:10pm; Reply: 11
Quoted from yaeli
Do they engineer the actual rice crops?

[quote]Outside of China public opposition has prevented many of the attempts at commercial production of genetically modified rice.

Other countries that have developed GM rice varieties include:  United States, China, Japan, Korea, Philippines, Switzerland, Mexico, Australia, Italy (Not all for increased trehalose, but increased trehalose is common since it help with drought resistance)

[quote]The article is from 2002 - did they at any stage apply this in actual agriculture?



Here are some more recent articles, if you prefer (I selected Scientific American since it has a good reputation):

http://scholar.google.com/scholar?as_ylo=2013&q=trehalose+transgenic+rice&hl=en&as_sdt=0,15&as_vis=1
Posted by: yaeli, Saturday, August 24, 2013, 4:14pm; Reply: 12
At a glance it seems that they do actually grow it.
Posted by: Lloyd, Saturday, August 24, 2013, 4:15pm; Reply: 13
Quoted from yaeli
Do they engineer the actual rice crops? The article is from 2002 - did they at any stage apply this in actual agriculture?



Can't find a reference to non-lab condition crops (keep in mind a lab may be an isolated rice paddy).

http://www.ncbi.nlm.nih.gov/pubmed/12586876
http://www.pnas.org/content/99/25/15898.short
http://www.sciencedirect.com/science/article/pii/S1360138503001596

Just a few abstracts found with a google search.

http://www.news.cornell.edu/stories/2002/11/sugar-gene-helps-rice-tolerate-drought-salt-cold

Quoted Text
In their experiment, the Cornell biologists used two different E. coli genes that are fused together and are responsible for trehalose synthesis in bacteria. (Previous attempts in other laboratories had used only one type of trehalose gene and had been less successful because the resulting transgenic plants showed so-called pleiotrophic effects, including stunted growth, and had little tolerance for stresses.)

The Cornell biologists also learned how to add custom-designed "promoter" sequences to the fused genes, to allow precise "when-and-where" control over gene expression. Depending on the need, the trehalose genes can be turned on in the transgenic plants when stresses occur -- the onset of colder temperatures, for example. Or the gene sequence can be regulated to make trehalose in particular parts of the plant -- such as the leaf but not the edible grains.

So far the transgenic rice plants with the trehalose-enhancement gene sequences have been tested through five generations -- from seed-producing plants to seedlings and more seed-producing plants, again and again -- and the desirable, stress-tolerance characteristics have held true. Compared with non-engineered rice plants that lack the trehalose-enhancement gene sequences, the transgenic rice plants are much more robust under a variety and combination of environmental stresses.


Posted by: yaeli, Saturday, August 24, 2013, 4:29pm; Reply: 14
:-/ They haven't touched Amaranth yet.

Or teff (I saw non-organic teff flour on the shelf...). Have to enter an Ethiopian restaurant and taste some injera.
Posted by: Averno, Saturday, August 24, 2013, 5:10pm; Reply: 15
Quoted from Lloyd


Modifying genetic expression via epigenetic function happens. Period.

Diet and supplements are an attempt to modify in a helpful manner.

The difference with a GMO is that the gene is modified, rather than it's expression (although that is also possible).




Good explanation/clarification.

Posted by: Amazone I., Sunday, August 25, 2013, 12:27pm; Reply: 16
some lecker preservatives are always fine for every*body*  ;)(evil)(evil)(funny) :X
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