???????作为害螨的天敌,没有眼睛的捕食螨——胡瓜钝绥螨,如何感知外界并捕食?其生长发育过程受哪些基因控制?这些在生物界“悬而未决”的科学问题,如今有了答案。

? ?? ?? ?? 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.

???????近日,国内知名的“以螨治螨”生物技术专家、福建省农科院植保所研究员张艳璇及其团队,首次解析了胡瓜钝绥螨的基因组和发育相关的转录组,为深化捕食螨研究和产业拓展提供科学依据。相关成果发表在国际权威学术期刊《基因组学》上。

? ?? ?? ?? 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.

???????据张艳璇介绍,为获得足够量和足够匀质的基因组DNA,团队成员花费6年时间,耐心挑取40000粒卵检测。经研究发现,胡瓜钝绥螨没有发育成熟的眼器官,基因组中无果蝇中的光敏性视紫红质,但其基因组中存在一些参与眼器官发育的调控基因,并存在一些光传导基因,因此它虽然没有视觉,但可以感知光。

? ?? ?? ?? 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.

???????“进一步研究发现,由于胡瓜钝绥螨的视觉缺失,其感知外界环境的主要途径是化学感知,通过味觉来感知食物靶向、捕食。”张艳璇说,在胡瓜钝绥螨基因组中,鉴定到24个味觉受体、65个离子受体基因,且没有果蝇的嗅觉受体、气味结合蛋白和化学感知蛋白。

? ?? ?? ?? "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.

???????螨类害虫身形微小,但其抗逆性强、繁殖速度快、研究难度大。我国是世界上受螨害侵袭最严重的国家之一,每年约40%的农药都用于治螨。该团队经长期探索,发明了“以螨治螨”生物防治技术。张艳璇表示,胡瓜钝绥螨是我国第一个走向市场的天敌商品,结束了我国捕食螨不能工厂化生产的历史。该研究对螨类基因组和发育转录组的分析,为其发育、繁殖和适应环境机制的进一步研究提供了资源。(记者谢开飞通讯员林雄欧捷)

? ?? ?? ?? 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)


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