Naveed Waleed Afzal, Liu Qian, Lu Congcong, Huang Xiaolei
Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Insects. 2024 Mar 12;15(3):187. doi: 10.3390/insects15030187.
The health and diversity of plant-feeding insects are strictly linked to their host plants and mutualistic symbionts. However, the study of bacterial symbionts within different insects on the same plant lineage is very limited. This study aimed to investigate the bacterial diversity in insect samples that exclusively feed on , representing three insect orders, Hemiptera, Lepidoptera, and Blattodea, each exhibiting distinct dietary preferences. The bacterial community was predominantly composed of , , , , and . The study found significant variations in symbiotic organisms among three insect orders: hemipterans had , lepidopterans had , and blattodean had . Furthermore, the dietary preferences of these insects played a pivotal role in shaping the symbiotic relationship of insects. are prevalent in sap feeders, dominate in stem feeders, and are abundant in leaf feeders. Seasonal influences also affect bacterial symbionts in , with present exclusively in winter. We also observed that the bacterial composition varies across all samples, but their core functions appear to be consistent. This highlights the complex relationship between host phylogeny and diet, with phylogeny being the primary driver, shaping adaptations to specialized diets.
植食性昆虫的健康和多样性与它们的寄主植物及共生菌密切相关。然而，关于同一植物谱系上不同昆虫体内细菌共生体的研究非常有限。本研究旨在调查仅以 为食的昆虫样本中的细菌多样性，这些昆虫样本代表半翅目、鳞翅目和蜚蠊目三个昆虫纲，每个纲都有独特的食性偏好。细菌群落主要由 、 、 、 和 组成。研究发现三个昆虫纲的共生生物存在显著差异：半翅目昆虫有 ，鳞翅目昆虫有 ，蜚蠊目昆虫有 。此外，这些昆虫的食性偏好在塑造昆虫的共生关系中起关键作用。 在树液取食者中普遍存在， 在茎干取食者中占主导， 在叶片取食者中大量存在。季节影响也会影响 中的细菌共生体， 仅在冬季出现。我们还观察到所有样本中的细菌组成各不相同，但它们的核心功能似乎是一致的。这突出了寄主系统发育与食性之间的复杂关系，其中系统发育是主要驱动因素，塑造了对特定食性的适应性。
