Guten Tag~

We are Sand Fixers Alliance

is what human life and civilization depend on
We have 12 million hectare of arable land degraded every year,which leads to the lost of 24 billion tons of FERTILE soil.
Even more
Only 10% of them are improving

In order to solve the above problems, people discover a magical system-biological soil crust

It has and can effectively prevent soil water and wind erosion ,promotes the evolution of desert vegetation.

The main products of these microorganisms are effective cementing agents for soil particles

These microorganisms involved in crusting are mainly

Our main research ideas are divided into the following three stages.

First stage

Increase the production of extracellular polysaccharides

Second stage

build a suicide switch

Third stage

build cyanobacteria and Bacillus subtilis Co-cultivation system

By consulting the literature, we have found two key enzymes

for the production of extracellular polysaccharides.

When increasing the expression of the two enzymes, the production of extracellular polysaccharides can be increased by two times.

In terms of suicide switch, we chose the to control the expression of the suicide gene

we also identified the cyanobacterium

which can survive in the desert and is a desert soil structure.


provide carbon and nitrogen sources

wind to accelerates soil crust;

Bacillus subtilis

produce extracellular polysaccharides;

increase the available phosphorus and nitrogen content in the soil.

Experimental Design

Modeling part

HP part

What will happen


We hope that in the future, our Sand Fixers Alliance will help people fix sand to defeat desertification by accelerating the process of natural evolution. We also propose a bold idea as to whether this symbiotic system of fighting drought and harsh conditions could also be used to aid human alien migration programs. Of course, these are just assumptions, giving our project a good vision.