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16 results for “shoot nitrogen”
Percent carbon and nitrogen of leaves from shoots harvested at three levels in the canopy from 19 plots dominated by S. pulchra and B. nana shrubs near LTER Shrub plots at Toolik Field Station, AK the summer of 2012.
The percent carbon and nitrogen from leaves of shoots harvested from 1m x 1m point frame plots the summer of 2012 at Toolik Lake, Alaska. were measured on a ThermoScientific 2000. For each point frame plot, six shoots were harvested from upper, middle, and low sections of the canopy. The photosynthetic capacity of each shoot was analyzed with a LiCor 6400 infra-red gas analyzer by being run through a light response and A/Ci curve. The area of the shoot as viewed from the stop of the LiCor opaque, confer chamber ("silhouette area") as well as the area of each shoot organ type was measured. These data are published separately, though methods are described below.
Shoot height and average carbon:nitrogen ratio for Spartina alterniflora in intertidal marshes on Hog Island, Parramore Island, Quinby inlet, and Phillips Creek of the Virginia Coast Reserve 1988-1989
Shoot height and average carbon:nitrogen ratio for Spartina alterniflora in intertidal marshes on Hog Island (Cattleshed Creek and Hodges Narrows), Parramore Island (Cresent Island: South Parramore), Quinby Inlet (Chimney Pole Marsh), and Phillips Creek (Phillips Creek) of the Virginia Coast Reserve 1988-1989.
Continuous remobilization from belowground provides more than half of all carbon and nitrogen in regrowing shoots after grassland defoliation
<p><span>Remobilization of carbon (C) and nitrogen (N) from roots and crowns to regrowing shoots is an important strategy for grassland plants to tolerate herbivory. While this remobilization is thought to terminate once plants have the capacity to photosynthesize again and to take up N from the soil, this has rarely been quantified.</span></p> <p><span>Here we investigated the remobilization of C and N to regrowing shoots of a perennial grassland under two defoliation frequencies (every 15 and 30 days) and two N fertilization levels (0 and 2.8 g m<sup>-2</sup>) by growing intact plant-soil cores for 60 days in a growth chamber. We measured the C remobilization from roots and crowns to regrowing shoots using a novel continuous <sup>13</sup>C labelling method, and quantified the N remobilization to regrowing shoots and plant N uptake from soil with a <sup>15</sup>N tracer method.</span></p> <p><span>Regrowing shoots relied strongly on belowground C reserves, where up to 52% of C in regrowing shoots came from belowground during the first 30 days after defoliation. Belowground C was still remobilized when plant shoots had fully regrown and retained full capacity to photosynthesize. Plants relied more on C remobilization with shorter times between defoliation events at the expense of root biomass, particularly without N fertilization. Large amounts of C remobilization were accompanied by large amounts of N remobilization (up to 89% of total shoot N) that were positively related, suggesting a coupled C and N transfer from roots and crowns to shoots.</span></p> <p><strong><em><span>Synthesis</span></em></strong><span>. The unexpectedly high dependency on C and N remobilization occurred continuously after defoliation and did not terminate once plants were fully regrown. Our results indicate that remobilization of C and N from belowground has profound effects on long-term productivity and C sequestration that needs to be considered for managing similar grasslands worldwide.</span></p>
Continuous remobilization from belowground provides more than half of all carbon and nitrogen in regrowing shoots after grassland defoliation
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Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments
GEO Series GSE240738. Arabidopsis thaliana. 7 samples. Type: Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing.
Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments [ChIP-seq]
GEO Series GSE240737. Arabidopsis thaliana. 2 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
miRNAs regulated systemically by nitrogen availability in shoots and roots of Medicago truncatula
GEO Series GSE247405. Medicago truncatula. 24 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Gene expression profile of rice shoot in response to nitrogen deficiency condition
GEO Series GSE73772. Oryza sativa Japonica Group; Oryza sativa. 6 samples. Type: Expression profiling by array.
Shoot-to-root mobile CEPD-like 2 integrates shoot nitrogen status to systemically regulate nitrate uptake in Arabidopsis
GEO Series GSE140834. Arabidopsis thaliana. 6 samples. Type: Expression profiling by high throughput sequencing.
Fine scale time-series RNA-Seq of shoot and root responses to Nitrogen supply
GEO Series GSE97500. Arabidopsis thaliana. 114 samples. Type: Expression profiling by high throughput sequencing.
Integration of shoot-derived polypeptide signals by root TGA transcription factors is essential for survival under fluctuating nitrogen environments [RNA-seq]
GEO Series GSE240736. Arabidopsis thaliana. 5 samples. Type: Expression profiling by high throughput sequencing.
Gene expression profile of rice shoot and root in response to nitrogen deficiency treatment under phosphorus deficiency condition.
GEO Series GSE73775. Oryza sativa Japonica Group; Oryza sativa. 12 samples. Type: Expression profiling by array.
NGS analysis of small RNAs under nitrogen excess stress in shoot and root of 2 week old barley plants
GEO Series GSE145799. Hordeum vulgare. 12 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Differential expression of genes in shoot samples of rice seedlings with contrasting response under low nitrogen
GEO Series GSE162302. Oryza sativa. 8 samples. Type: Expression profiling by array.
Shoot-to-root mobile polypeptides involved in systemic regulation of nitrogen acquisition
GEO Series GSE94161. Arabidopsis thaliana. 3 samples. Type: Expression profiling by array.
Genome-wide transcriptome changes under nitrogen (N), water (W) and N+W stress in root and shoot tissues of contrasting rice genotypes, IR 64 and Nagina 22 at seedling stage
GEO Series GSE147158. Oryza sativa. 16 samples. Type: Expression profiling by high throughput sequencing.
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