Political Wrinkles  

Go Back   Political Wrinkles > General Discussion > Science, Inventions & Space
Register FAQDonate PW Store PW Trivia Members List Calendar Search Today's Posts Mark Forums Read

Science, Inventions & Space Discuss Scientists Fix a Crucial Photosynthesis 'Glitch', Boosting Crop Growth by 40% at the General Discussion; https://www.sciencealert.com/researc...hesis-shortcut cool Scientists have fixed a natural flaw in photosynthesis, and as a result have boosted plant productivity by an ...

Reply
 
Share LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 01-04-2019, 09:50 PM
saltwn's Avatar
PW Enlightenment
 
Join Date: Oct 2007
Location: Esto perpetua
Posts: 81,279
Thanks: 55,422
Thanked 26,263 Times in 18,790 Posts
Send a message via AIM to saltwn Send a message via MSN to saltwn Send a message via Yahoo to saltwn
Default Scientists Fix a Crucial Photosynthesis 'Glitch', Boosting Crop Growth by 40%

https://www.sciencealert.com/researc...hesis-shortcut

cool

Quote:
Scientists have fixed a natural flaw in photosynthesis, and as a result have boosted plant productivity by an incredible 40 percent compared to wild relatives.

Photosynthesis is the chemical reaction that lets plants turn sunlight and carbon dioxide into food, and this new hack could result in enough calories to help feed another 200 million people on our planet, from the same volume of crops.

Quote:
As of now, the fix has only been applied to tobacco plants, so we're a long way off using this to boost our food supply. But it's an incredibly promising first step.

So what is this 'glitch' that needed fixing? It's a little-known step in photosynthesis known as photorespiration.

"We could feed up to 200 million additional people with the calories lost to photorespiration in the Midwestern US each year," says principal investigator Donald Ort from the University of Illinois Carl R. Woese Institute for Genomic Biology.

"Reclaiming even a portion of these calories across the world would go a long way to meeting the 21st century's rapidly expanding food demands."
read more if you're interested: Science Alert
__________________
@StephenKing
Sometimes I feel like screaming, "Everybody knows that Trump is as crooked as a broken nose and as dumb as a fencepost. Just quit sh*tting around and get him the f*ck out of there."
Reply With Quote
  #2 (permalink)  
Old 01-05-2019, 05:39 PM
mr wonder's Avatar
PW Enlightenment
 
Join Date: Mar 2011
Location: Virginia
Gender: Male
Posts: 12,230
Thanks: 10,575
Thanked 6,639 Times in 4,511 Posts
Default Re: Scientists Fix a Crucial Photosynthesis 'Glitch', Boosting Crop Growth by 40%

hmmm, interesting... they "fixed it"? riiight

__________________
Hope is the dream of the waking man.
Aristotle

For there is hope of a tree, if it be cut down, that it will sprout again, and that the tender branch thereof will not cease.
Job 14:6-8
Reply With Quote
  #3 (permalink)  
Old 01-05-2019, 06:11 PM
saltwn's Avatar
PW Enlightenment
 
Join Date: Oct 2007
Location: Esto perpetua
Posts: 81,279
Thanks: 55,422
Thanked 26,263 Times in 18,790 Posts
Send a message via AIM to saltwn Send a message via MSN to saltwn Send a message via Yahoo to saltwn
Default Re: Scientists Fix a Crucial Photosynthesis 'Glitch', Boosting Crop Growth by 40%

a key step involving the enzyme ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO), which wedges a carbon dioxide onto the compound ribulose-1,5-bisphosphate (RuBP).

Roughly 20 percent of the time, RuBisCO mistakes oxygen for the all-important carbon dioxide molecule.(Fun fact: RuBisCO is widely regarded as the most abundant protein on the planet)

Not only is this a wasted opportunity, the result of this glitch reaction is glycolate and ammonia two toxic compounds that need to be swiftly dealt with before they cause too much damage.

Fortunately plants have evolved a way to rid themselves of this poison, called photorespiration. They don't mind spending a portion of their energy on this vital recycling process if it helps them survive.

But when it comes to growing them as a food source, we certainly do.

"It costs the plant precious energy and resources that it could have invested in photosynthesis to produce more growth and yield," says lead author and molecular biologist Paul South with the US Department of Agriculture Agricultural Research Service.


Rice, wheat, and soybeans all suffer from this need to clear out toxic buildup. Not only do they happen to be three of the four crops our world's population relies on for most our calories, we can expect their yield to drop in the future thanks to global warming.

"RuBisCO has even more trouble picking out carbon dioxide from oxygen as it gets hotter, causing more photorespiration," says co-author Amanda Cavanagh from the University of Illinois.

There have been numerous efforts over the years to find ways to force crop plants into avoiding the need to detox.

Many have involved finding the most efficient photorespiration approaches taken by other organisms, including various algae and bacteria.

This latest effort is called Realizing Increased Photosynthetic Efficiency (RIPE), and its approach was to select genes from elsewhere and test them out.

A handful came from the bacterium E. coli's glycolate oxidation pathway. A second version used a gene for catalase also from E. coli, and some for a glycolate oxidase and malate synthase from plants.

Subject number three used a plant malate synthase gene and a green algal gene for glycolate dehydrogenase.


These were used in conjunction with other genetic tweaks to find the most energy efficient pathway among 17 different constructs.

The third photorespiration pathway was the one that stood out from the rest in final results, with metabolic activity surging more than 40 percent compared with controls. This gained energy translates into bigger yields.
__________________
@StephenKing
Sometimes I feel like screaming, "Everybody knows that Trump is as crooked as a broken nose and as dumb as a fencepost. Just quit sh*tting around and get him the f*ck out of there."
Reply With Quote
  #4 (permalink)  
Old 01-06-2019, 08:06 AM
Conservative Sage
 
Join Date: Mar 2010
Location: Scottsdale, AZ
Posts: 17,751
Thanks: 11,095
Thanked 11,738 Times in 6,977 Posts
Send a message via ICQ to AZRWinger
Default Re: Scientists Fix a Crucial Photosynthesis 'Glitch', Boosting Crop Growth by 40%

Sounds like the crops would be Frankenfood, the dreaded GMO'S. I'd be concerned about some unknown side effect of fixing this supposed problem. It would seem like the much ballyhooed process of evolution would have fixed this already if it was a defect in the process.
__________________
What is a 30 something year old single man with a rock in one hand and a Honduran flag in the other?

An asylum seeker.
Reply With Quote
The Following 3 Users Say Thank You to AZRWinger For This Useful Post:
Reply

Tags
40%, boosting, crop, crucial, fix, glitch, growth, photosynthesis, scientists

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 10:59 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

Content Relevant URLs by vBSEO 3.2.0