Gupta Ayushi, Sinha Deepak Kumar, Nair Suresh
Plant-Insect Interaction Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi 110067, India.
iScience. 2022 Jun 7;25(7):104550. doi: 10.1016/j.isci.2022.104550. eCollection 2022 Jul 15.
The brown planthopper (BPH) is a monophagous sap-sucking pest of rice that causes immense yield loss. The rapid build-up of pesticide resistance combined with the ability of BPH populations to quickly overcome host plant resistance has rendered conventional control strategies ineffective. One of the likely ways in which BPH adapts to novel environments is by undergoing rapid shifts in its microbiome composition. To elucidate the rapid adaptation to novel environments and the contributions of toward insect survival, we performed -specific gut-microbiome profiling of BPH populations. Results revealed the differential occurrence of species in BPH populations with changing climates and geographical locations. Further, the observed variation in species composition and abundance correlated with BPH survivability. Collectively, this study, while adding to our current understanding of symbiont-mediated insect adaptation, also demonstrated a complex interplay between insect physiology and microbiome dynamics, which likely confers BPH its rapid adaptive capacity.
褐飞虱是一种单食性的水稻吸汁害虫，会造成巨大的产量损失。农药抗性的迅速增强，加上褐飞虱种群能够迅速克服宿主植物抗性，使得传统的防治策略失效。褐飞虱适应新环境的一种可能方式是其微生物群落组成迅速发生变化。为了阐明对新环境的快速适应以及微生物群落对昆虫生存的贡献，我们对褐飞虱种群进行了特定的肠道微生物群落分析。结果显示，随着气候和地理位置的变化，褐飞虱种群中不同物种的出现情况存在差异。此外，观察到的物种组成和丰度变化与褐飞虱的生存能力相关。总体而言，这项研究在增进我们目前对共生体介导的昆虫适应的理解的同时，也证明了昆虫生理学与微生物群落动态之间的复杂相互作用，这可能赋予了褐飞虱快速的适应能力。
