? ?? ?? ?？ As the natural enemy of the mites, there is no eye to prey mites-Hugua blunt Sui mite, how to perceive the outside world and prey on? What genes control its growth and development process? These "unresolved" scientific questions in the biological world now have answers.
? ?? ?? ?？ Recently, zhang yanxuan and his team, a well-known biotechnical expert of "treating mites with mites" and researcher of plant protection institute of fujian academy of agricultural sciences and his team, first analyzed the genome and development-related transcriptome of guava's blunt Sui mites, providing scientific basis for deepening the study of mites predation and industrial expansion. Related results are published in the international authoritative academic journal Genomics.
? ?? ?? ?？ According to Zhang Yanxuan, to obtain enough and enough homogeneous genomic DNA, team members spent six years patiently picking up 40000 eggs for detection. It was found that there were no mature ocular organs and no photosensitive rhodopsin in drosophila, but there were some regulatory genes involved in the development of ocular organs in the genome, and there were some light conduction genes, so it could sense light although it did not have vision.
? ?? ?? ?？ "Further studies have found that the main way to perceive the external environment is chemical perception, through taste to perceive food targeting, predation, because of the lack of vision of the blunt Sui mites of courgettes. Zhang Yanxuan said 24 taste receptors,65 ion receptor genes, and no olfactory receptors, odor-binding proteins, and chemical-aware proteins were identified in the papaya blunt Sui mite genome.
? ?? ?? ?？ The mites are small in size, but their resistance to stress is strong, their reproduction speed is fast, and their research is difficult. China is one of the most mite-affected countries in the world, and about 40% of pesticides are used to treat mites every year. After long-term exploration, the team invented the biological control technology of "treating mites with mites ". Zhang Yanxuan said that papaya blunt Sui mite is the first natural enemy commodity to go to the market in China, ending the history of our country's predator mite cannot be produced in a factory. The study's analysis of mite genomes and developmental transcriptomes provides resources for further study of their developmental, reproductive, and adaptive environmental mechanisms. (Correspondent Xie Kaifei Lin Xiong Ojie)