Wu Kai, Li Shirong, Wang Jing, Ni Yuyang, Huang Wuren, Liu Qiuning, Ling Erjun
College of Life Sciences, Shangrao Normal University, Shangrao, China.
Key Laboratory of Insect Developmental and Evolutionary Biology, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China.
Front Physiol. 2020 Mar 5;11:191. doi: 10.3389/fphys.2020.00191. eCollection 2020.
Insects produce many peptide hormones that play important roles in regulating growth, development, immunity, homeostasis, stress, and other processes to maintain normal life. As part of the digestive system, the insect midgut is also affected by hormones secreted from the prothoracic gland, corpus allatum, and various neuronal cells; these hormones regulate the secretion and activity of insects' digestive enzymes and change their feeding behaviors. In addition, the insect midgut produces certain hormones when it recognizes various components or pathogenic bacteria in ingested foods; concurrently, the hormones regulate other tissues and organs. In addition, intestinal symbiotic bacteria can produce hormones that influence insect signaling pathways to promote host growth and development; this interaction is the result of long-term evolution. In this review, the types, functions, and mechanisms of hormones working on the insect midgut, as well as hormones produced therein, are reviewed for future reference in biological pest control.
昆虫会产生许多肽类激素，这些激素在调节生长、发育、免疫、体内平衡、应激及其他过程以维持正常生命活动中发挥着重要作用。作为消化系统的一部分，昆虫中肠也会受到前胸腺、咽侧体及各种神经细胞分泌的激素的影响；这些激素调节昆虫消化酶的分泌和活性，并改变它们的取食行为。此外，昆虫中肠在识别摄入食物中的各种成分或病原菌时会产生某些激素；同时，这些激素会调节其他组织和器官。另外，肠道共生细菌能够产生影响昆虫信号通路以促进宿主生长发育的激素；这种相互作用是长期进化的结果。在本综述中，对作用于昆虫中肠的激素的类型、功能和作用机制以及中肠产生的激素进行了综述，以供生物防治害虫时参考。
