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Juvenile hormone induces reproduction via mir-1175-3p in the red imported fire ant, Solenopsis invicta

Insect Science 2024年第2期31卷 371-386页

作者： Jie Chen Ziying Guan Yunjie Ma Qingxing Shi Ting Chen Muhammad Irfan WarisLihua Lyu Lihua Lyu Yongyue Lu Guojun Qi Institute of plant protection Guangdong Academy of Agricultural SciencesKey Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of High Technology for Plant ProtectionGuangzhouChina Department of Entomology College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina

Juvenile hormone(JH)acts in the regulation of caste differentiation between queens and workers(i.e.,with or without reproductive capacity)during vitellin synthesis and oogenesis in social ***,the regulatory mechanisms have not yet been ***,we identified a highly expressed microRNA(mirNA),mir-1175-3p,in the red imported fire ant,Solenopsis *** found that mir-1175-3p is prominently present in the fat bodies and ovaries of ***,mir-1175-3p interacts with its target gene,broad-complex core(Br-C),in the fat *** utilizing mir-1175-3p agomir,we successfully suppressed the expression of the Br-C protein in queens,resulting in reduced vitellogenin expression,fewer eggs,and poorly developed ***,decreasing mir-1175-3p levels led to the increased expression of Br-C and vitellogenin in workers,triggering the“re-development”of the ***,when queens were fed with JH,the expression of mir-1175-3p decreased,whereas the expression of vitellogenin-2 and vitellogenin-3 ***,the suppression of fertility in queens caused by treatment with agomir mir-1175-3p was completely rescued by the increased vitellogenin expression induced by being fed with *** results suggest the critical role of mir-1175-3p in JH-regulated reproduction,shedding light on the molecular mechanism underlying mirNA-mediated fecundity in social insects and providing a novel strategy for managing ***.

关键词： juvenile hormone mir-1175-3p red imported fire ant reproduction social insects vitellogenin

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