首页|The role of cAMP-dependent protein kinase A in the formation of long-term memory in Bactrocera dorsalis
The role of cAMP-dependent protein kinase A in the formation of long-term memory in Bactrocera dorsalis
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The role of cAMP-dependent protein kinase A in the formation of long-term memory in Bactrocera dorsalis
The cAMP-dependent protein kinase A (PKA) signaling pathway has long been considered critical for long-term memory (LTM) formation.Previous studies have mostly focused on the role of PKA signaling in LTM induction by multiple spaced conditioning with less attention to LTM induction by a single conditioning.Here,we conducted behavioral-pharmacology,enzyme immunoassay and RNA interference experiments to study the role of the PKA signaling pathway in LTM formation in the agricultural pest Bactrocera dorsalis,which has a strong memory capacity allowing it to form a two-day memory even from a single conditioning trial.We found that either blocking or activating PKA prior to conditioning pretreatment affected multiple spaced LTM,and conversely,they did not affect LTM formed by single conditioning.This was further confirmed by enzyme-linked immunosorbent assay (ELISA) and silencing of the protein kinase regulatory subunit 2 and catalytic subunit 1.Taken together,these results suggest that activating PKA during memory acquisition helps to induce the LTM formed by multiple spaced conditioning but not by a single conditioning.Our findings challenge the conserved role of PKA signaling in LTM,which provides a basis for the greater diversity of molecular mechanisms underlying LTM formation across species,as well as possible functional and evolutionary implications.
Bactrocera dorsalisLTMmultiple spacedPKAsingle
Jinxin Yu、Yanmin Hui、Jiayi He、Yinghao Yu、Zhengbing Wang、Siquan Ling、Wei Wang、Xinnian Zeng、Jiali Liu
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National Key Laboratory of Green Pesticides/Guangdong Engineering Research Center for Insect Behavior Regulation/College of Plant Protection,South China Agricultural University,Guangzhou 510642,China
College of Life Science and Agronomy,Zhoukou Normal University,Zhoukou 466001,China
Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou 510520,China
Bactrocera dorsalis LTM multiple spaced PKA single
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