Severe insect infestation:
Overmedication:
1.Endanger the safety of cultivated land: China, which accounts for 9% of the world's arable land, uses 50-60% of the world's pesticides, leading to the deterioration of soil properties on arable land (FAO)
At the same time, there are still some remote areas in China with relatively backward medical conditions, and people often cannot be found and treated in time when they get sick. Intestinal bleeding, if not examined and treated in time, will often lead to serious problems. Massive intestinal bleeding can be directly judged by self-perception and by changes in the color of the stool. But if it is a trace of bleeding, we cannot make a timely judgment and perception. Therefore, we are working on the design of a portable intestinal micro-bleeding detector this year , so that intestinal problems can be early detection and early prevention.
3.Difficult to resist insect infestations: The infestation of pests threatens food security, the application of pesticides and insects causes environmental pollution, and the application of pesticides causes agricultural disasters The methods which exist now 1.environmental pollution Chemical control methods - avermectin, etc Advantages: Convenient, economical, efficient and fast Drawbacks:Pests are prone to develop resistance and are not environmentally friendly 2.Scale is limited
Physical control method - lighting lamps to trap moths Advantages: Environmentally friendly Drawbacks: The cost is too high, and the insecticidal effect is unstable to cope with large-scale pest problems 3.Pest resistance Advantages: Environmentally friendly Drawbacks: Insects are susceptible to antimicrobial resistance, and Bt protein levels are reduced by environmental factors. 4.conclusion: Pests have become biologically resistant to existing control methods, and new technologies need to be found urgently The use of RNAi technology to control insects is of great innovative significance.
The dialogue between the seedling and the tree
We want to participate in scientific research, find new ways to achieve stable agricultural production and increase production, and seek directions for promoting farmers' continuous income increase. But because we were just a young undergraduate, we didn't know where to start, so we thought of our academic supervisor, Professor Yang Zhifan, who used RNAi to inhibit the important functional genes of brown planthoppers to improve rice insect resistance as an example
Limited scale: Physical control law - lighting to lure moths
Advantages: Environmentally friendly
Disadvantages: High cost, unstable insecticidal effect, and inability to cope with large-scale pest problems
Pest resistance
Traditional biological control methods such as Bt
Advantages: Environmentally friendly
Disadvantages: Insects are prone to developing drug resistance, and Bt protein levels can be reduced due to environmental factors
Dialogue between Little Seedlings and Big Trees: We want to participate in scientific research, find new methods to achieve stable and increased agricultural production, and find directions to promote sustained income growth for farmers. It is suggested that students should go to the laboratory as early as possible and as much as possible when conditions permit. No matter how detailed the knowledge in the books is, it is better to go to the scene for a look. If you have the idea of engaging in scientific research work, entering the laboratory early to receive education will also be of great help to your future development. They guided and organized our research path, telling us that we should go to the laboratories of teachers Zhang Jiang and Li Shengchun to learn RNAi modern biological control technology, which gave us the confidence to form an undergraduate IGEM team