Abstract
As one of the essential macroelements, nitrogen (N) plays an important role in plant growth and development. In order to know the effect of different N levels on the rice plant growth and carbon-nitrogen metabolism, we analyzed the rice growth phenotype, leaf SPAD value, photosynthesis, carbon-nitrogen metabolic status and gene expression profile under four different N levels (0×N, 0.1×N, 1×N and 5×N). The plant height and dry weight increased with increasing N levels, whereas an opposite trend was observed for the root length, which decreased with increasing N levels. The leaf SPAD value, stem nitrate concentration, soluble proteins, photosynthetic rate, stomatal conductance and total nitrogen concentration increased with increasing N levels, whereas an opposite trend was observed for soluble carbohydrates and carbon/nitrogen ratio which decreased with increasing N levels. Metabolite profile analysis revealed that the low N treatment caused visible decreases in the concentrations of total sugars and organic acids in the leaves, while caused visible increases in the concentrations of total sugars, organic acids and free amino acids in the roots. Gene expression analysis showed that the transcriptional levels of 5 genes (GS1;3, NADH-GOGAT1, NADH-GOGAT2, PEPC4 and PEPC7) altered significantly under four different N levels.
References
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© 2016
Articles in the same Issue
- An overview of phytochrome: An important light switch and photo-sensory antenna for regulation of vital functioning of plants
- A novel GH13 subfamily of α-amylases with a pair of tryptophans in the helix α3 of the catalytic TIM-barrel, the LPDlx signature in the conserved sequence region V and a conserved aromatic motif at the C-terminus
- Biogenic synthesis of silver nanoparticles using cell-free extract of Bacillus safensis LAU 13: antimicrobial, free radical scavenging and larvicidal activities
- Understanding taxonomic position of local endemic Agropyron deweyi (Poaceae) using morphological characters and sequences of nuclear and chloroplast DNA regions
- Genetic status of the putative hybrid swarms of mountain dwarf pine and Scots pine in contact zones of their distribution in Slovakia
- Species delimitation and population structure in three Onosma (Boraginaceae) species
- Glycinebetaine priming improves salt tolerance of wheat
- The effect of nitrogen level on rice growth, carbon-nitrogen metabolism and gene expression
- High efficiency Agrobacterium-mediated transformation of Pinellia ternata using petiole explants from submerged cultures
- Cryopreservation of Serbian autochthonous Prunus spp. by droplet-vitrification
- Response of green hydra (Hydra viridissima) to variability and directional changes in food availability
- Data on some members of the family Tylenchidae (Nematoda: Tylenchina) from Iran
- New and firstly recorded oribatid mites from Turkey
- Reproductive parameters of four species of water mites (Acari: Hydrachnidia)
- A new species of the genus Aeolothrips (Thysanoptera: Aeolothripidae) from Iran
- Skull variability of mice and voles inhabiting the territory of a great cormorant colony
- High glucose-associated osmolality promotes adipocytogenic differentiation of primary rat osteoblasts in a protein kinase A and phosphatidylinositol 3-kinase/Akt-dependent manner
- Direct influence of rooibos-derived compound on rabbit ovarian functions and their response to gonadotropins
- Corrective notice to the European mudminnow (Umbra krameri Walbaum, 1792) record from the Black Sea
Articles in the same Issue
- An overview of phytochrome: An important light switch and photo-sensory antenna for regulation of vital functioning of plants
- A novel GH13 subfamily of α-amylases with a pair of tryptophans in the helix α3 of the catalytic TIM-barrel, the LPDlx signature in the conserved sequence region V and a conserved aromatic motif at the C-terminus
- Biogenic synthesis of silver nanoparticles using cell-free extract of Bacillus safensis LAU 13: antimicrobial, free radical scavenging and larvicidal activities
- Understanding taxonomic position of local endemic Agropyron deweyi (Poaceae) using morphological characters and sequences of nuclear and chloroplast DNA regions
- Genetic status of the putative hybrid swarms of mountain dwarf pine and Scots pine in contact zones of their distribution in Slovakia
- Species delimitation and population structure in three Onosma (Boraginaceae) species
- Glycinebetaine priming improves salt tolerance of wheat
- The effect of nitrogen level on rice growth, carbon-nitrogen metabolism and gene expression
- High efficiency Agrobacterium-mediated transformation of Pinellia ternata using petiole explants from submerged cultures
- Cryopreservation of Serbian autochthonous Prunus spp. by droplet-vitrification
- Response of green hydra (Hydra viridissima) to variability and directional changes in food availability
- Data on some members of the family Tylenchidae (Nematoda: Tylenchina) from Iran
- New and firstly recorded oribatid mites from Turkey
- Reproductive parameters of four species of water mites (Acari: Hydrachnidia)
- A new species of the genus Aeolothrips (Thysanoptera: Aeolothripidae) from Iran
- Skull variability of mice and voles inhabiting the territory of a great cormorant colony
- High glucose-associated osmolality promotes adipocytogenic differentiation of primary rat osteoblasts in a protein kinase A and phosphatidylinositol 3-kinase/Akt-dependent manner
- Direct influence of rooibos-derived compound on rabbit ovarian functions and their response to gonadotropins
- Corrective notice to the European mudminnow (Umbra krameri Walbaum, 1792) record from the Black Sea