Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice

Abstract Flag leaves (FL) and second leaves (SL) in rice show differential aging patterns during monocarpic senescence. Coordination of aging programs between FL and SL is important for grain yield and quality. However, the molecular bases for differential aging programs between FL and SL have not b...

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Autores principales:	Shinyoung Lee, Hyobin Jeong, Sichul Lee, Jinwon Lee, Sun-Ji Kim, Ji-Won Park, Hye Ryun Woo, Pyung Ok Lim, Gynheung An, Hong Gil Nam, Daehee Hwang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6fa2c9aeb9344316b88e933137f42198
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spelling	oai:doaj.org-article:6fa2c9aeb9344316b88e933137f421982021-12-02T16:06:21ZMolecular bases for differential aging programs between flag and second leaves during grain-filling in rice10.1038/s41598-017-07035-92045-2322https://doaj.org/article/6fa2c9aeb9344316b88e933137f421982017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07035-9https://doaj.org/toc/2045-2322Abstract Flag leaves (FL) and second leaves (SL) in rice show differential aging patterns during monocarpic senescence. Coordination of aging programs between FL and SL is important for grain yield and quality. However, the molecular bases for differential aging programs between FL and SL have not been systematically explored in rice. Here, we performed mRNA-sequencing of FL and SL at six time points during grain-filling and identified four molecular bases for differential aging programs between FL and SL: phenylpropanoid biosynthesis, photosynthesis, amino acid (AA) transport, and hormone response. Of them, photosynthesis (carbon assimilation) and AA transport (nitrogen remobilization) predominantly occurred in FL and SL, respectively, during grain-filling. Unlike other molecular bases, AA transport showed consistent differential expression patterns between FL and SL in independent samples. Moreover, long-distance AA transporters showed invariant differential expression patterns between FL and SL after panicle removal, which was consistent to invariant differential nitrogen contents between FL and SL after panicle removal. Therefore, our results suggest that the supplies of carbon and nitrogen to seeds is functionally segregated between FL and SL and that long-distance AA transport is an invariant core program for high nitrogen remobilization in SL.Shinyoung LeeHyobin JeongSichul LeeJinwon LeeSun-Ji KimJi-Won ParkHye Ryun WooPyung Ok LimGynheung AnHong Gil NamDaehee HwangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-16 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shinyoung Lee Hyobin Jeong Sichul Lee Jinwon Lee Sun-Ji Kim Ji-Won Park Hye Ryun Woo Pyung Ok Lim Gynheung An Hong Gil Nam Daehee Hwang Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
description	Abstract Flag leaves (FL) and second leaves (SL) in rice show differential aging patterns during monocarpic senescence. Coordination of aging programs between FL and SL is important for grain yield and quality. However, the molecular bases for differential aging programs between FL and SL have not been systematically explored in rice. Here, we performed mRNA-sequencing of FL and SL at six time points during grain-filling and identified four molecular bases for differential aging programs between FL and SL: phenylpropanoid biosynthesis, photosynthesis, amino acid (AA) transport, and hormone response. Of them, photosynthesis (carbon assimilation) and AA transport (nitrogen remobilization) predominantly occurred in FL and SL, respectively, during grain-filling. Unlike other molecular bases, AA transport showed consistent differential expression patterns between FL and SL in independent samples. Moreover, long-distance AA transporters showed invariant differential expression patterns between FL and SL after panicle removal, which was consistent to invariant differential nitrogen contents between FL and SL after panicle removal. Therefore, our results suggest that the supplies of carbon and nitrogen to seeds is functionally segregated between FL and SL and that long-distance AA transport is an invariant core program for high nitrogen remobilization in SL.
format	article
author	Shinyoung Lee Hyobin Jeong Sichul Lee Jinwon Lee Sun-Ji Kim Ji-Won Park Hye Ryun Woo Pyung Ok Lim Gynheung An Hong Gil Nam Daehee Hwang
author_facet	Shinyoung Lee Hyobin Jeong Sichul Lee Jinwon Lee Sun-Ji Kim Ji-Won Park Hye Ryun Woo Pyung Ok Lim Gynheung An Hong Gil Nam Daehee Hwang
author_sort	Shinyoung Lee
title	Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
title_short	Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
title_full	Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
title_fullStr	Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
title_full_unstemmed	Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
title_sort	molecular bases for differential aging programs between flag and second leaves during grain-filling in rice
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6fa2c9aeb9344316b88e933137f42198
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Molecular bases for differential aging programs between flag and second leaves during grain-filling in rice

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