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The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers

The neuronal basis of complex social behavior is still poorly understood. In honeybees, reproductive investment decisions are made at the colony-level. Queens develop from female-destined larvae that receive alloparental care from nurse bees in the form of ad-libitum royal jelly (RJ) secretions. Typ...

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Autores principales: Zhang, Xufeng, Hu, Han, Han, Bin, Wei, Qiaohong, Meng, Lifeng, Wu, Fan, Fang, Yu, Feng, Mao, Ma, Chuan, Rueppell, Olav, Li, Jianke
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Society for Biochemistry and Molecular Biology 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8014994/
https://www.ncbi.nlm.nih.gov/pubmed/32669299
http://dx.doi.org/10.1074/mcp.RA120.002123
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author Zhang, Xufeng
Hu, Han
Han, Bin
Wei, Qiaohong
Meng, Lifeng
Wu, Fan
Fang, Yu
Feng, Mao
Ma, Chuan
Rueppell, Olav
Li, Jianke
author_facet Zhang, Xufeng
Hu, Han
Han, Bin
Wei, Qiaohong
Meng, Lifeng
Wu, Fan
Fang, Yu
Feng, Mao
Ma, Chuan
Rueppell, Olav
Li, Jianke
author_sort Zhang, Xufeng
collection PubMed
description The neuronal basis of complex social behavior is still poorly understood. In honeybees, reproductive investment decisions are made at the colony-level. Queens develop from female-destined larvae that receive alloparental care from nurse bees in the form of ad-libitum royal jelly (RJ) secretions. Typically, the number of raised new queens is limited but genetic breeding of “royal jelly bees” (RJBs) for enhanced RJ production over decades has led to a dramatic increase of reproductive investment in queens. Here, we compare RJBs to unselected Italian bees (ITBs) to investigate how their cognitive processing of larval signals in the mushroom bodies (MBs) and antennal lobes (ALs) may contribute to their behavioral differences. A cross-fostering experiment confirms that the RJB syndrome is mainly due to a shift in nurse bee alloparental care behavior. Using olfactory conditioning of the proboscis extension reflex, we show that the RJB nurses spontaneously respond more often to larval odors compared with ITB nurses but their subsequent learning occurs at similar rates. These phenotypic findings are corroborated by our demonstration that the proteome of the brain, particularly of the ALs differs between RJBs and ITBs. Notably, in the ALs of RJB newly emerged bees and nurses compared with ITBs, processes of energy and nutrient metabolism, signal transduction are up-regulated, priming the ALs for receiving and processing the brood signals from the antennae. Moreover, highly abundant major royal jelly proteins and hexamerins in RJBs compared with ITBs during early life when the nervous system still develops suggest crucial new neurobiological roles for these well-characterized proteins. Altogether, our findings reveal that RJBs have evolved a strong olfactory response to larvae, enabled by numerous neurophysiological adaptations that increase the nurse bees' alloparental care behavior.
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spelling pubmed-80149942021-04-12 The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers Zhang, Xufeng Hu, Han Han, Bin Wei, Qiaohong Meng, Lifeng Wu, Fan Fang, Yu Feng, Mao Ma, Chuan Rueppell, Olav Li, Jianke Mol Cell Proteomics Research The neuronal basis of complex social behavior is still poorly understood. In honeybees, reproductive investment decisions are made at the colony-level. Queens develop from female-destined larvae that receive alloparental care from nurse bees in the form of ad-libitum royal jelly (RJ) secretions. Typically, the number of raised new queens is limited but genetic breeding of “royal jelly bees” (RJBs) for enhanced RJ production over decades has led to a dramatic increase of reproductive investment in queens. Here, we compare RJBs to unselected Italian bees (ITBs) to investigate how their cognitive processing of larval signals in the mushroom bodies (MBs) and antennal lobes (ALs) may contribute to their behavioral differences. A cross-fostering experiment confirms that the RJB syndrome is mainly due to a shift in nurse bee alloparental care behavior. Using olfactory conditioning of the proboscis extension reflex, we show that the RJB nurses spontaneously respond more often to larval odors compared with ITB nurses but their subsequent learning occurs at similar rates. These phenotypic findings are corroborated by our demonstration that the proteome of the brain, particularly of the ALs differs between RJBs and ITBs. Notably, in the ALs of RJB newly emerged bees and nurses compared with ITBs, processes of energy and nutrient metabolism, signal transduction are up-regulated, priming the ALs for receiving and processing the brood signals from the antennae. Moreover, highly abundant major royal jelly proteins and hexamerins in RJBs compared with ITBs during early life when the nervous system still develops suggest crucial new neurobiological roles for these well-characterized proteins. Altogether, our findings reveal that RJBs have evolved a strong olfactory response to larvae, enabled by numerous neurophysiological adaptations that increase the nurse bees' alloparental care behavior. American Society for Biochemistry and Molecular Biology 2020-11-25 /pmc/articles/PMC8014994/ /pubmed/32669299 http://dx.doi.org/10.1074/mcp.RA120.002123 Text en © 2020 © 2020 Zhang et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Research
Zhang, Xufeng
Hu, Han
Han, Bin
Wei, Qiaohong
Meng, Lifeng
Wu, Fan
Fang, Yu
Feng, Mao
Ma, Chuan
Rueppell, Olav
Li, Jianke
The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers
title The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers
title_full The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers
title_fullStr The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers
title_full_unstemmed The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers
title_short The Neuroproteomic Basis of Enhanced Perception and Processing of Brood Signals That Trigger Increased Reproductive Investment in Honeybee (Apis mellifera) Workers
title_sort neuroproteomic basis of enhanced perception and processing of brood signals that trigger increased reproductive investment in honeybee (apis mellifera) workers
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8014994/
https://www.ncbi.nlm.nih.gov/pubmed/32669299
http://dx.doi.org/10.1074/mcp.RA120.002123
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