Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms

Abstract The bivoltine strain of the domestic silkworm, Bombyx mori, has two generations per year. It shows a facultative diapause phenotype determined by environmental conditions, including photoperiod and temperature, and nutrient conditions during embryonic and larval development of the mother. H...

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Autores principales:	Takeshi Yokoyama, Shigeru Saito, Misato Shimoda, Masakazu Kobayashi, Yoko Takasu, Hideki Sezutsu, Yoshiomi Kato, Makoto Tominaga, Akira Mizoguchi, Kunihiro Shiomi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d61d33c5a0534531aacecc95e9577350
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spelling	oai:doaj.org-article:d61d33c5a0534531aacecc95e95773502021-12-02T14:30:39ZComparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms10.1038/s41598-021-87590-42045-2322https://doaj.org/article/d61d33c5a0534531aacecc95e95773502021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87590-4https://doaj.org/toc/2045-2322Abstract The bivoltine strain of the domestic silkworm, Bombyx mori, has two generations per year. It shows a facultative diapause phenotype determined by environmental conditions, including photoperiod and temperature, and nutrient conditions during embryonic and larval development of the mother. However, it remains unclear how the environmental signals received during development are selectively utilized as cues to determine alternative diapause phenotypes. We performed a comparative analysis between the Kosetsu strain of B. mori and a Japanese population of the wild mulberry silkworm B. mandarina concerning the hierarchical molecular mechanisms in diapause induction. Our results showed that for the Kosetsu, temperature signals during the mother’s embryonic development predominantly affected diapause determination through the thermosensitive transient receptor potential ankyrin 1 (TRPA1) and diapause hormone (DH) signaling pathways. However, embryonic diapause in B. mandarina was photoperiod-dependent, although the DH signaling pathway and thermal sensitivity of TRPA1 were conserved within both species. Based on these findings, we hypothesize that TRPA1-activated signals are strongly linked to the signaling pathway participating in diapause induction in Kosetsu to selectively utilize the temperature information as the cue because temperature-dependent induction was replaced by photoperiodic induction in the TRPA1 knockout mutant.Takeshi YokoyamaShigeru SaitoMisato ShimodaMasakazu KobayashiYoko TakasuHideki SezutsuYoshiomi KatoMakoto TominagaAkira MizoguchiKunihiro ShiomiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takeshi Yokoyama Shigeru Saito Misato Shimoda Masakazu Kobayashi Yoko Takasu Hideki Sezutsu Yoshiomi Kato Makoto Tominaga Akira Mizoguchi Kunihiro Shiomi Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
description	Abstract The bivoltine strain of the domestic silkworm, Bombyx mori, has two generations per year. It shows a facultative diapause phenotype determined by environmental conditions, including photoperiod and temperature, and nutrient conditions during embryonic and larval development of the mother. However, it remains unclear how the environmental signals received during development are selectively utilized as cues to determine alternative diapause phenotypes. We performed a comparative analysis between the Kosetsu strain of B. mori and a Japanese population of the wild mulberry silkworm B. mandarina concerning the hierarchical molecular mechanisms in diapause induction. Our results showed that for the Kosetsu, temperature signals during the mother’s embryonic development predominantly affected diapause determination through the thermosensitive transient receptor potential ankyrin 1 (TRPA1) and diapause hormone (DH) signaling pathways. However, embryonic diapause in B. mandarina was photoperiod-dependent, although the DH signaling pathway and thermal sensitivity of TRPA1 were conserved within both species. Based on these findings, we hypothesize that TRPA1-activated signals are strongly linked to the signaling pathway participating in diapause induction in Kosetsu to selectively utilize the temperature information as the cue because temperature-dependent induction was replaced by photoperiodic induction in the TRPA1 knockout mutant.
format	article
author	Takeshi Yokoyama Shigeru Saito Misato Shimoda Masakazu Kobayashi Yoko Takasu Hideki Sezutsu Yoshiomi Kato Makoto Tominaga Akira Mizoguchi Kunihiro Shiomi
author_facet	Takeshi Yokoyama Shigeru Saito Misato Shimoda Masakazu Kobayashi Yoko Takasu Hideki Sezutsu Yoshiomi Kato Makoto Tominaga Akira Mizoguchi Kunihiro Shiomi
author_sort	Takeshi Yokoyama
title	Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
title_short	Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
title_full	Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
title_fullStr	Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
title_full_unstemmed	Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
title_sort	comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d61d33c5a0534531aacecc95e9577350
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Comparisons in temperature and photoperiodic-dependent diapause induction between domestic and wild mulberry silkworms

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