Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes

ABSTRACT The N absorption and assimilation is critical for the rice (Oryza sativa L.) yield increase when overdose N was applied in rice production. Three different rice genotypes, 'Quanliangyou 1' (Q1), 'Quanliangyou 681' (Q681) and 'Huanghuazhan' (HHZ), were selected...

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Auteurs principaux:	Wang,Jun, Lu,Yi-peng, Wang,Jie, Xu,Rui-xin, Li,Jun, Hu,Wei, Xiong,Ya-jun, Zhang,Yun-bo, Wang,Xiao-yan, Tian,Xiao-hai
Langue:	English
Publié:	Instituto de Investigaciones Agropecuarias, INIA 2018
Sujets:	Grain quality growth promotion nitrogen input nitrogen partitioning Oryza sativa rice
Accès en ligne:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200152
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spelling	oai:scielo:S0718-583920180002001522018-08-16Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypesWang,JunLu,Yi-pengWang,JieXu,Rui-xinLi,JunHu,WeiXiong,Ya-junZhang,Yun-boWang,Xiao-yanTian,Xiao-hai Grain quality growth promotion nitrogen input nitrogen partitioning Oryza sativa rice ABSTRACT The N absorption and assimilation is critical for the rice (Oryza sativa L.) yield increase when overdose N was applied in rice production. Three different rice genotypes, 'Quanliangyou 1' (Q1), 'Quanliangyou 681' (Q681) and 'Huanghuazhan' (HHZ), were selected to investígate the effects of elevated N input on the N partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis. Under increasing N inputs (0, 120, 180, 250 kg ha-1), N content in leaf, culm, seed and root were increased significantly. The increased N was preferentially deposited in leaf and culm. Tiller number, panicle number and length were also proved to be significantly promoted, but plant height and 1000-grain weight were nonsignificantly affected under elevated N input. Under high N input, seed protein content was elevated, while fatty acid and amylose content remained unchanged in comparison to low N input, but amylopectin content decreased. For the key genes in N assimilation, glutamine synthetase (OsGS1;1) could be induced by increasing N input (0 to 180 kg ha-1) but higher N input (250 kg ha-1) inhibit its expression, which showed similar response pattern with the glutamine synthetase activity. Although different rice genotypes showed similar response pattern to elevated N input, each genotype varied a lot in certain phenotypic indexes. And the response pattern of all these phenotypic characteristics to elevated N input was independent of rice genotype. These findings suggest that elevated N input could promote rice growth, reallocate N content in different tissues, and have negative impact on grain quality. This study provided physiological and molecular foundation for rice breeding and cultivation under high N input.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.2 20182018-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200152en10.4067/S0718-58392018000200152
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Grain quality growth promotion nitrogen input nitrogen partitioning Oryza sativa rice
spellingShingle	Grain quality growth promotion nitrogen input nitrogen partitioning Oryza sativa rice Wang,Jun Lu,Yi-peng Wang,Jie Xu,Rui-xin Li,Jun Hu,Wei Xiong,Ya-jun Zhang,Yun-bo Wang,Xiao-yan Tian,Xiao-hai Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
description	ABSTRACT The N absorption and assimilation is critical for the rice (Oryza sativa L.) yield increase when overdose N was applied in rice production. Three different rice genotypes, 'Quanliangyou 1' (Q1), 'Quanliangyou 681' (Q681) and 'Huanghuazhan' (HHZ), were selected to investígate the effects of elevated N input on the N partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis. Under increasing N inputs (0, 120, 180, 250 kg ha-1), N content in leaf, culm, seed and root were increased significantly. The increased N was preferentially deposited in leaf and culm. Tiller number, panicle number and length were also proved to be significantly promoted, but plant height and 1000-grain weight were nonsignificantly affected under elevated N input. Under high N input, seed protein content was elevated, while fatty acid and amylose content remained unchanged in comparison to low N input, but amylopectin content decreased. For the key genes in N assimilation, glutamine synthetase (OsGS1;1) could be induced by increasing N input (0 to 180 kg ha-1) but higher N input (250 kg ha-1) inhibit its expression, which showed similar response pattern with the glutamine synthetase activity. Although different rice genotypes showed similar response pattern to elevated N input, each genotype varied a lot in certain phenotypic indexes. And the response pattern of all these phenotypic characteristics to elevated N input was independent of rice genotype. These findings suggest that elevated N input could promote rice growth, reallocate N content in different tissues, and have negative impact on grain quality. This study provided physiological and molecular foundation for rice breeding and cultivation under high N input.
author	Wang,Jun Lu,Yi-peng Wang,Jie Xu,Rui-xin Li,Jun Hu,Wei Xiong,Ya-jun Zhang,Yun-bo Wang,Xiao-yan Tian,Xiao-hai
author_facet	Wang,Jun Lu,Yi-peng Wang,Jie Xu,Rui-xin Li,Jun Hu,Wei Xiong,Ya-jun Zhang,Yun-bo Wang,Xiao-yan Tian,Xiao-hai
author_sort	Wang,Jun
title	Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
title_short	Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
title_full	Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
title_fullStr	Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
title_full_unstemmed	Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
title_sort	effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200152
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Effects of elevated nitrogen application on nitrogen partitioning, plant growth, grain quality and key genes involved in glutamate biosynthesis among three rice genotypes

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