Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling

Abstract Mesocotyl elongation is an important trait influencing seedling emergence and establishment in rice direct-seeding cultivation and is immediately inhibited after light exposure. Detailed researches on the molecular basis and biological processes underlying light repression of mesocotyl grow...

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Autores principales:	Fangjun Feng, Hanwei Mei, Peiqing Fan, Yanan Li, Xiaoyan Xu, Haibin Wei, Ming Yan, Lijun Luo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3dce36514b1e4e4089b372bd965043ca
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spelling	oai:doaj.org-article:3dce36514b1e4e4089b372bd965043ca2021-12-02T15:05:04ZDynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling10.1038/s41598-017-12326-22045-2322https://doaj.org/article/3dce36514b1e4e4089b372bd965043ca2017-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-12326-2https://doaj.org/toc/2045-2322Abstract Mesocotyl elongation is an important trait influencing seedling emergence and establishment in rice direct-seeding cultivation and is immediately inhibited after light exposure. Detailed researches on the molecular basis and biological processes underlying light repression of mesocotyl growth could probably provide useful information for key factors controlling this trait. Here we monitored the transcriptome and endogenous phytohormone changes specifically in the elongating mesocotyl in response to light exposure with a time-course. It was revealed that 974 transcripts were significantly differentially expressed (FDR < 0.05, \|log2 (L/D) \| ≥2) after light exposure. Most of the differential expression genes associated with the responses to hormone. Metabolic pathway analysis using the KEGG system suggested plant hormone signal transduction, α-linolenic acid metabolism and diterpenoid biosynthesis were critical processes of mesocotyl growth inhibited by light. Consistent with DEGs, the endogenous IAA, tZ and GA3 content was significantly reduced while JA level was dramatically increased, which indicated that light inhibited rice mesocotyl growth through decreasing IAA, tZ and GA3 content and/or increasing JA level. The present results enriched our knowledge about the genes and phytohormones regulating mesocotyl elongation in rice, which may help improve future studies on associated genes and develop new varieties tolerance to deep sowing.Fangjun FengHanwei MeiPeiqing FanYanan LiXiaoyan XuHaibin WeiMing YanLijun LuoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fangjun Feng Hanwei Mei Peiqing Fan Yanan Li Xiaoyan Xu Haibin Wei Ming Yan Lijun Luo Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
description	Abstract Mesocotyl elongation is an important trait influencing seedling emergence and establishment in rice direct-seeding cultivation and is immediately inhibited after light exposure. Detailed researches on the molecular basis and biological processes underlying light repression of mesocotyl growth could probably provide useful information for key factors controlling this trait. Here we monitored the transcriptome and endogenous phytohormone changes specifically in the elongating mesocotyl in response to light exposure with a time-course. It was revealed that 974 transcripts were significantly differentially expressed (FDR < 0.05, \|log2 (L/D) \| ≥2) after light exposure. Most of the differential expression genes associated with the responses to hormone. Metabolic pathway analysis using the KEGG system suggested plant hormone signal transduction, α-linolenic acid metabolism and diterpenoid biosynthesis were critical processes of mesocotyl growth inhibited by light. Consistent with DEGs, the endogenous IAA, tZ and GA3 content was significantly reduced while JA level was dramatically increased, which indicated that light inhibited rice mesocotyl growth through decreasing IAA, tZ and GA3 content and/or increasing JA level. The present results enriched our knowledge about the genes and phytohormones regulating mesocotyl elongation in rice, which may help improve future studies on associated genes and develop new varieties tolerance to deep sowing.
format	article
author	Fangjun Feng Hanwei Mei Peiqing Fan Yanan Li Xiaoyan Xu Haibin Wei Ming Yan Lijun Luo
author_facet	Fangjun Feng Hanwei Mei Peiqing Fan Yanan Li Xiaoyan Xu Haibin Wei Ming Yan Lijun Luo
author_sort	Fangjun Feng
title	Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
title_short	Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
title_full	Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
title_fullStr	Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
title_full_unstemmed	Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
title_sort	dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3dce36514b1e4e4089b372bd965043ca
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Dynamic transcriptome and phytohormone profiling along the time of light exposure in the mesocotyl of rice seedling

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