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Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila

SIMPLE SUMMARY: The increase of hot days with temperatures over 37 °C in southern China due to global warming has led to summer collapse of the alligator weed flea beetle, an introduced biological agent for the invasive alligator weed. To promote understanding of the beetle’s adaption/tolerance to h...

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Autores principales: Jia, Dong, Ji, Zhouyu, Yuan, Xiaofang, Zhang, Bin, Liu, Yanhong, Hu, Jun, Wang, Yuanxin, Li, Xianchun, Ma, Ruiyan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7570112/
https://www.ncbi.nlm.nih.gov/pubmed/32823776
http://dx.doi.org/10.3390/insects11080531
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author Jia, Dong
Ji, Zhouyu
Yuan, Xiaofang
Zhang, Bin
Liu, Yanhong
Hu, Jun
Wang, Yuanxin
Li, Xianchun
Ma, Ruiyan
author_facet Jia, Dong
Ji, Zhouyu
Yuan, Xiaofang
Zhang, Bin
Liu, Yanhong
Hu, Jun
Wang, Yuanxin
Li, Xianchun
Ma, Ruiyan
author_sort Jia, Dong
collection PubMed
description SIMPLE SUMMARY: The increase of hot days with temperatures over 37 °C in southern China due to global warming has led to summer collapse of the alligator weed flea beetle, an introduced biological agent for the invasive alligator weed. To promote understanding of the beetle’s adaption/tolerance to hot temperatures, we obtained TRPA1, Painless, and Pyrexia, three thermosensitive transient receptor potential channel genes from the beetle, and analyzed their expression patterns across different developmental stages and hot temperatures. Their constitutive expressions were dramatically different from each other and stage-specific. As temperature increased, their expressions in eggs elevated to their peak levels at 30 or 37.5 °C, and then fell back to their preferred temperature levels at temperatures > their peak temperatures. These results imply that (1) they may have different and stage-specific roles in perceiving high temperatures/chemicals and mediating the corresponding responses; and (2) their expressions may be decoupled from their activation. These findings lay a foundation for further understanding of the summer collapse of the beetle. ABSTRACT: Global warming has gradually reduced the control efficacy of Agasicles hygrophila against the invasive weed Alternanthera philoxeroides. To better understand the summer collapse of A. hygrophila populations, we cloned the cDNA sequences of the high temperature-sensing TRPA1, Painless, and Pyrexia from A. hygrophila, and analyzed their temporal expressions and the impacts of high temperatures on their expression in eggs, the most vulnerable stage of A. hygrophila to hot temperatures. All the three genes obtained had the signature domains of TRPA channels and were constitutively expressed in eggs, larvae (L1, L2, L3), pupae, and adults, but AhPainless had the highest expression, followed by AhPyrexia, and AhTRPA1. The lowest and highest expression stages were adult and pupae for AhTRPA1, egg and L3 for AhPainless, and pupae/adult and L2 for AhPyrexia. The expressions of AhTRPA1, AhPainless, and AhPyrexia remained low at the preferred temperature range of 25–28 °C, elevated to their peak levels at 37.5, 30, and 30 °C, respectively, then fell to their 25–28 °C levels (AhTRPA1, AhPainless) or a lower level (AhPyrexia) at one or more temperatures >30 or 37.5 °C. These results suggest that their temperature-sensing roles and importance may be different, stage-specific, and their expression may be decoupled from their activation.
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spelling pubmed-75701122020-10-28 Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila Jia, Dong Ji, Zhouyu Yuan, Xiaofang Zhang, Bin Liu, Yanhong Hu, Jun Wang, Yuanxin Li, Xianchun Ma, Ruiyan Insects Article SIMPLE SUMMARY: The increase of hot days with temperatures over 37 °C in southern China due to global warming has led to summer collapse of the alligator weed flea beetle, an introduced biological agent for the invasive alligator weed. To promote understanding of the beetle’s adaption/tolerance to hot temperatures, we obtained TRPA1, Painless, and Pyrexia, three thermosensitive transient receptor potential channel genes from the beetle, and analyzed their expression patterns across different developmental stages and hot temperatures. Their constitutive expressions were dramatically different from each other and stage-specific. As temperature increased, their expressions in eggs elevated to their peak levels at 30 or 37.5 °C, and then fell back to their preferred temperature levels at temperatures > their peak temperatures. These results imply that (1) they may have different and stage-specific roles in perceiving high temperatures/chemicals and mediating the corresponding responses; and (2) their expressions may be decoupled from their activation. These findings lay a foundation for further understanding of the summer collapse of the beetle. ABSTRACT: Global warming has gradually reduced the control efficacy of Agasicles hygrophila against the invasive weed Alternanthera philoxeroides. To better understand the summer collapse of A. hygrophila populations, we cloned the cDNA sequences of the high temperature-sensing TRPA1, Painless, and Pyrexia from A. hygrophila, and analyzed their temporal expressions and the impacts of high temperatures on their expression in eggs, the most vulnerable stage of A. hygrophila to hot temperatures. All the three genes obtained had the signature domains of TRPA channels and were constitutively expressed in eggs, larvae (L1, L2, L3), pupae, and adults, but AhPainless had the highest expression, followed by AhPyrexia, and AhTRPA1. The lowest and highest expression stages were adult and pupae for AhTRPA1, egg and L3 for AhPainless, and pupae/adult and L2 for AhPyrexia. The expressions of AhTRPA1, AhPainless, and AhPyrexia remained low at the preferred temperature range of 25–28 °C, elevated to their peak levels at 37.5, 30, and 30 °C, respectively, then fell to their 25–28 °C levels (AhTRPA1, AhPainless) or a lower level (AhPyrexia) at one or more temperatures >30 or 37.5 °C. These results suggest that their temperature-sensing roles and importance may be different, stage-specific, and their expression may be decoupled from their activation. MDPI 2020-08-13 /pmc/articles/PMC7570112/ /pubmed/32823776 http://dx.doi.org/10.3390/insects11080531 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jia, Dong
Ji, Zhouyu
Yuan, Xiaofang
Zhang, Bin
Liu, Yanhong
Hu, Jun
Wang, Yuanxin
Li, Xianchun
Ma, Ruiyan
Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila
title Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila
title_full Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila
title_fullStr Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila
title_full_unstemmed Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila
title_short Molecular Cloning and Expression Profiles of Thermosensitive TRP Genes in Agasicles hygrophila
title_sort molecular cloning and expression profiles of thermosensitive trp genes in agasicles hygrophila
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7570112/
https://www.ncbi.nlm.nih.gov/pubmed/32823776
http://dx.doi.org/10.3390/insects11080531
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