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| | |-+  Scientists boost C3 plant productivity by 40%!
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Author Topic: Scientists boost C3 plant productivity by 40%!  (Read 225 times)
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CrabCake
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« on: January 09, 2019, 09:08:46 am »

https://www.sciencenews.org/article/new-way-genetically-tweak-photosynthesis-boosts-plant-growth

This is a pretty big move. One of the factors that slows the rate of photosynthesis is the processes reliance on the enzyme Rubisco, which is supposed to effectively "start" the light-independent parts of photosynthesis by (in effect) taking carbon dioxide and gluing it to other organic chemicals, a process that ultimately creates glucose.

Unfortunately Rubisco is a very old protein that mainly evolved with "mass production" in mind rather than "efficiency". This means it often screws up, trying to take oxygen from its surroundings, effectively creating extra steps as the toxic by product glycolate is created and has to be dealt with in a very convoluted process that I can't remotely remember the details of (I'm no longer an undergrad so I'm not going to bother looking it up). This (a process called photorespiration) seriously decreases the overall efficiency of the process, and means C3 plants (that aren't adapted to have workarounds) don't flourish very well at all in hotter climates. And as C3 plants include among other things, rice, wheat, oat, barley, legumes,  fruit trees, spinach, potato, soy, sugar beet and cotton, this seriously limits agricultural productivity for humanity as a whole especially in the tropics.


This is one of the better uses of GM technology tbh. What they're doing is introducing more efficient tools to deal with the aforementioned glycolate, ultimately simplifying the process, while supressing the inefficient metabolic pathway.
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FWIW, CrabCake hates China. I think they said something like their dream was for robots to devastate China.

dead0man
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« Reply #1 on: January 09, 2019, 09:22:10 am »

I posted this several days ago, huge news.  Maybe we'd care if Trump Tweeted about it?  Or perhaps if the scientists involved thought AOC's dancing was "a bit too much". Smiley
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"Peace for Israel means security, and we must stand with all our might to protect its right to exist, its territorial integrity. I see Israel as one of the great outposts of democracy in the world, and a marvelous example of what can be done, how desert land can be transformed into an oasis of brotherhood and democracy. Peace for Israel means security and that security must be a reality." MLK Jr
Frodo
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« Reply #2 on: January 09, 2019, 10:18:19 am »

Genetically modified foods are the hallmark of the next Green Revolution. 
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