Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
Gene Expression of Microbes Changes in Low Gravity Bioreactor
The tiniest astronaut? Easy - the trillions of bacteria that accompany every manned space flight. With talk of moon bases and extended space travel back in the news, NASA again focuses on the question of how microorganisms behave in space.
A rotating wall bioreactor is used to perform Earth-bound tests that simulate a low gravity environment for microbes. The bioreactor is a small cylinder that rotates slowly, keeping the microbes in a constant state of free fall in a liquid growth medium.
(Rotating Wall Bioreactor)
Salmonella (the second leading cause of gastric distress in the US) gets worse under these conditions, making it more resistant to heat and stomach acid. Weightlessness alters the genetic expression of microbes; the genes affected cover the full range of cell function.
This is not just a problem for the health of astronauts on long missions. It also affects any other natural biological process that is mediated or assisted by bacteria. Science fiction fans may recall sours from Bruce Sterling's 1985 novel Schismatrix; biological problems surfaced when microorganisms were subject to low gravity for long periods.
Take a look at Microscopic Astronauts at nasa.gov. Enthusiasts will enjoy the Gene Expression Omnibus and the Stanford Genomic Resources page.
Scroll down for more stories in the same category. (Story submitted 3/1/2004)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 1 )
Related News Stories - (" Biology ")
Black Fungus Blocks Radiation
'You were surrounded by Astrophage most of the time' - Andy Weir, 2021.
Lunar Biorepository Proposed For Cryo-Preservation Of Earth Species
'...there was no one alive who had ever seen them. But they existed in the Life Bank.' - John Varley, 1977.
Let's Make Slaver Sunflowers! Engineering Plants To Reflect Light
'The mirror-blossom was a terrible weapon.' - Larry Niven, 1965.
Machete-Wielding Philodendron Isn't Going To Take It Anymore
'The tree ended its wild larruping, stood like a dreaming giant liable to wake into frenzy at any moment.' - Eric Frank Russell, 1943.
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Will AIs Give Better Results If You're Rude To Them?
'I said, "Listen up, motherf*cker.'
Cybertruck Robotic Arm F10 Drone Launch!
Drone away!
Black Fungus Blocks Radiation
'You were surrounded by Astrophage most of the time'
Liuzhi Process Now In Use In China
'He was in a high-ceilinged windowless cell with walls of glittering white porcelain.'
Reflect Orbital Offers 'Sunlight on Demand' And Light Pollution
'I don't have to tell you about the seven two-mile-diameter orbital mirrors...'
Will Robots Become Family Caregivers?
'The robant and the tiny old woman entered the control room slowly...'
Chinese Tokamak Uses AI To Keep Fusion Plasma Stable
'Guy named Otto Octavius winds up with eight limbs... What are the odds?'
Time Crystals Can Now Be Seen Directly
'It is as you thought when you constructed the time crystal, my master Vaylan.'
RoboBallet The Dance Of Cooperative Robots
'...an integrated seven-unit robot team.'
Chrysalis Generation Ship to Alpha Centauri
'This was their world, their planet —
this swift-traveling, yet seemingly moveless vessel.'
Alexa+ And Its AI Brain Improvements
'What's it do?' he asked. 'It amuses.'
Does CloneRobotics Offer A True Android?
Is this What Little Girls Are Made Of?
Brain Implant Is Able To Capture Your Inner Dialogue
'So you see, you can hide nothing from me.'
Are AIs Going Rogue Like Hal 9000
'I know that you and Frank were planning to disconnect me...'
Animated Tumblebugs On Astounding Cover!
'Gaines and Harvey mounted tumblebugs, and kept abreast of the Cadet Captain...'
LingYuan Vehicle Roof Drones Now Available, ala Blade Runner 2049
Accompanied by a small selection of similar ideas from science fiction.
