Rice genome unravelled at last

[Knight-Dragon]

:yummy:

http://news.bbc.co.uk/2/hi/science/nature/4138342.stm

Scientists have unscrambled the genetic code of rice, a development that could help end hunger around the world, Nature magazine reports this week.
The blueprint will speed up the hunt for genes that improve productivity and guard against disease and pests.

In order to avoid shortages, rice yields must increase by 30% over the next 20 years, researchers say.

Scientists from 10 countries cooperated to work out how the 400 million "letters" of rice DNA are arranged.

"Rice is a critically important crop, and this finished sequence represents a major milestone," said Robin Buell of The Institute for Genetic Research (TIGR). "We know the scientific community can use these data to develop new varieties of rice that deliver increased yields and grow in harsher conditions."

The research will also help scientists understand other vital food crops. Rice is genetically similar to maize, wheat, barley, rye, sorghum and sugarcane. So understanding the genomes of these plants is now a small step away.

"Rice is the Rosetta Stone for crop genomes," said Dr Buell. "We can use the rice genome as a base for genomic studies of cereals."

According to the United Nations, rice currently provides 20% of the world's dietary energy supply, while wheat supplies 19% and maize 5%.

Although rice represents 30% of global cereal production today, and production levels have doubled over the past 30 years, much more of the cereal will be needed in the future.

Current consumption trends suggest that about 4.6 billion people will be reliant on rice by the 2025. In addition, global warming may mean that rice is required to be more robust in the face of droughts.

Japan led the International Rice Genome Sequencing Project, which included teams from the US, the UK, China, India, Thailand, Brazil and France.

The rice variety sequenced was the temperate subspecies Oryza sativa subspecies japonica, which is cultivated mainly in Japan, Korea, and the US.

Disease control

It took seven years to complete the work and the results are already accelerating discovery. Scientists have used the sequence to identify genes that control fundamental processes, such as flowering.

Rice's similarity to barley has also helped researchers identify genes responsible for resistance to barley powdery mildew and stem rust, two major crop diseases.

"Now that we know where all the genes are, we try to associate them with certain traits," said Rod Wing of the University of Arizona. "The accurate, map-based sequence has already led to the identification of genes that confer important traits such as yield and demand for light during growth."

The researchers compared rice to the only other fully sequenced plant genome, Arabidposis thaliana, or thale cress, a weed that is commonly used in laboratories.

They found that while 90% of thale cress proteins also occur in rice, only 71% of rice proteins also occur in thale cress. This suggests rice has many genes specific to itself, or cereals.

"By sequencing rice we sequenced all the other cereals to a certain extent," said Professor Wing.

"Many of the shared genes are in similar positions on the respective chromosomes, so when we assign a function to a given gene in rice, it is very likely that the corresponding gene in another cereal has the same or a similar function."

 

[Colonel]

Remember the horrible things the scientist could do, like poision the crop, and kill a few billion people :j/k:

 

[steviejay]

does this mean they'll be able to alter it? iirc I once done a paper on Genetic Modified Food and rice is quite lacking in Vitimin A. does that mean that Vitimin A could be added to suppliment people's diets?

or more importantly, will people let scientists mess with it less someone do, as Colonel say, poison the crop and wipe out a few billion humans

 

[Azadre]

I honestly do not believe they can poison the rice crop by genetics. It probably is not a genetic switch for the rice genome.

 

[blackheart]

I eat rice everyday.. so this is good news for me (I hope)!

 

[Japanrocks12]

Considering how long the rice genome took to be unravelled, I cannot fathom how long it will take to unravel the corn genome

 

[Colonel]

I honestly do not believe they can poison the rice crop by genetics. It probably is not a genetic switch for the rice genome.

Ah I see we have a disbeliever. Watch the Simpsons more and find out what genetics can do, remember the potato that ate the carrots.

 

[SmartJock2112]

I remember the simpsons

 

[ligertiger]

For a moment, I thought it was Condoleeza's genome........

 

[muppet]

That would not have taken 7 years.

 

[Babbler]

Yum, Mutant Uncle Ben's rice!

 

[Giio]

Could they insert artificial soy sauce flavouring into the rice? I always spill the soy sauce on my shirts

 

[Abaddon]

I honestly do not believe they can poison the rice crop by genetics. It probably is not a genetic switch for the rice genome.

You dont have to swap genes, you can add them.
Basically they could take the DNA from a bacteria that causes say.. malaria. Insert that DNA successfully into a rice cell and it will grow to produce malaria in every single one of its cells. Its seeds will then germinate and also contain the disease.


Can be done.. and needs to be done really.. far to many people crapping up the planet

 

[Marla_Singer]

Rice genome unravelled at last

Condie Rice's genome has been unravelled ? So we've finally found out whether she was human or a machine ?


...


What's the result ?