archershaun

一条橘子皮:

#NASA Ins 搬运工# D31
(科幻就要变成现实啦!)
How do space plants grow? This experiment on the International Space Station (@iss) hopes to find out. Space-grown plants look mostly normal, but have some distinct features compared to plants grown on Earth – most notably in the way their roots grow.
太空植物如何生长?国际空间站(@iss)的这个实验希望能够找到答案。空间生长的植物看起来大部分是正常的,但与在地球上生长的植物相比,具有一些明显的特征 - 最显着的是其根部生长。
Roots evolved to grow “down” to search out nutrients and water, and on Earth, that response is predominantly governed by the force of gravity. But how does a plant know which way is down when there is no “down”? What determines the direction in which the plant’s roots should grow in space?
根发展成“向下”获取营养物质和水,在地球上,这种反应主要受重力的支配。但是,当没有“下”的时候,植物如何知道哪个方向是下的?什么决定了植物根系应该在太空中生长的方向?

We are studying the molecular genetic signals that help guide plant growth in the novel environment of spaceflight, including how plants use new molecular “tools” to sense and respond to their environment when familiar signals are absent. What we learn could improve the way we grow plants in microgravity on future space missions, enabling crews to use plants for food and oxygen. This is just one of many petri plates filled with tiny plants from the Characterizing Arabidopsis Root Attractions-2 (CARA-2) that was recently harvest aboard the space station.
我们正在研究分子遗传信号,这些信号可以帮助指导太空飞行环境中的植物生长,包括植物在缺乏熟悉的信号时如何使用新的分子“工具”来感知和响应环境。我们所学的东西可以改善我们在未来太空任务中的微重力作物生长的方式,使得船员能够利用植物来获得食物和氧气。这只是许多培养皿中充满了近期在空间站收获的拟南芥根系吸引特征研究-2(CARA-2)的小植物之一。
Credit: NASA 
#nasa #space #science #plants #roots #grow#microgravity #experiment #earth #down #up#environment #research

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