Integrated Control of Nitrate Uptake by Crop Growth Rate and Soil Nitrate Availability under Field Conditions

Devienne-Barret, Florence

doi:10.1006/anbo.2000.1264

Cited by 114 publications

(65 citation statements)

References 51 publications

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“…As shown by Svoboda et al (2000) wheat's demand for nitrogen was not fully saturated in N1 as proved by nitrogen dilution curves (Devienne-Barret et al 2000, Gastal and Lemaire 2002, Jeuffroy et al 2002. It probably stimulated the uptake from subsoil.…”

Section: The Apparent Uptake Of N From Soil Profilementioning

confidence: 88%

“…In field experiments performed in comparable environments authors also reported that the available N in the zone down to about one meter could be extracted by winter wheat crop and 90 cm is a standard depth of sampling for N min spring supply (Burns 1980, Cabelguenne and Debaeke 1998, Devienne-Barret et al 2000, Olfs et al 2005. On deep soils mineral nitrogen in the zone under 120-150 cm or even deeper is indicated as accessible for winter wheat roots (Burns 1980, Addiscott and Darby 1991, Lucas et al 2000.…”

Section: The Apparent Uptake Of N From Soil Profilementioning

confidence: 97%

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Uptake of mineral nitrogen from subsoil by winter wheat

Haberle¹,

Svoboda²,

Krejčová³

2006

Plant Soil Environ.

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The apparent uptake of mineral nitrogen (N min ) from top-and subsoil layers during the growth of winter wheat (Triticum aestivum L.) was studied in Prague-Ruzyne on clay loam Chernozem soil in years 1996 and three treatments, unfertilized (N0), fertilized with 100 kg (N1) and 200 kg (N2) nitrogen per hectare were observed in years 1996-2000 and 2001-2003, respectively. The apparent uptake of nitrogen from soil layers was calculated from the changes of N min content between sampling terms. Most of available mineral N in the soil down to 90 cm was almost fully depleted between tillering and anthesis in treatment N0. The uptake from subsoil layers was delayed and it continued during the period of grain filling in fertilized treatments.

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Section: The Apparent Uptake Of N From Soil Profilementioning

confidence: 88%

Section: The Apparent Uptake Of N From Soil Profilementioning

confidence: 97%

Uptake of mineral nitrogen from subsoil by winter wheat

Haberle¹,

Svoboda²,

Krejčová³

2006

Plant Soil Environ.

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“…In contrast, for hypernodulating mutants, low SNU values were associated to NNI values above 1. It was postulated as a general rule that in situations where access to N substrate is not limiting, N uptake by the plant is determined by N demand, as determined by plant growth rate ( Devienne-Barret et al 2000). As such, in hypernodulating mutants, the high levels of NNI indicate that the low N 2 fixing activity of hypernodulating mutant tended to saturate the host plant sink capacity.…”

Section: 2mentioning

confidence: 99%

Pea nodule gradients explain N nutrition and limited symbiotic fixation in hypernodulating mutants

Voisin

Prudent

Duc

et al. 2015

Agron. Sustain. Dev.

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Legumes fix atmospheric nitrogen by symbiosis with soil bacteria in root nodules. Legume yields are limited by the low capacity of N 2 fixation. Hypernodulating mutants have been selected decades ago to try to increase nodule number. However, literature data show that N fixation of hypernodulating mutants was not increased compared to parental lines. Here, we study the functional basis of limited N fixation associated to hypernodulation. We grew two wild type genotypes and nine hypernodulating mutants of pea in hydroponics in three greenhouse experiments. We measured the following traits related to N nutrition during the vegetative period: nodule number, plant N uptake, nodule-specific activity, and plant and nodule concentrations. Genetic and environmental variations induced nodule gradients. These gradients were used to set quantitative relationships between N nutrition traits and nodule number. We compared the relationships obtained for hypernodulating and for wild types. N nutrition traits were analysed together with C nutrition traits, through correlation networks. Our results show that higher nodule number of hypernodulating mutants is correlated with lower levels of nodule activity, from −25 to −60 %, by comparison to the wild type. Higher nodule number of hypernodulating mutants is also correlated with lower total N uptake by symbiotic fixation, from −0 to −60 %, by comparison to the wild type. Findings demonstrate that N nutrition is not a factor limiting growth in hypernodulating mutants, as shown by N nutrition index higher than 1, indicating N nutrition in excess. The correlations suggest that limited N 2 fixation in hypernodulating mutants arises from restricted shoot growth, which limits the plant capacity to accumulate N. Furthermore, symbiotic efficiency decreased with increasing nodule number, down to a minimal value for hypernodulating mutants. Thus, to overcome the trade-off between N benefits from N 2 fixation and carbon nodulation costs, the hypernodulation trait should be associated with high shoot growth capacity in breeding programs.

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“…As maize and other cereal crop species mature, N demand increases along with the metabolic needs of the growing plant influenced by environmental factors [7,9,37,56]. The results presented here indicate that the modern maize hybrid tested has a developmental threshold for applied N, such that during early development (V3), N supply at the field site exceeded the demand for N-requiring macromolecules (e.g., protein) resulting in saturation of assimilatory free Gln, even at low N application (Table 1; Figure 1A).…”

Section: Glnlux Glutamine Becomes a Reliable Indicator Of N Applicatimentioning

confidence: 99%

“…Although GlnLux glutamine was demonstrated in this study to reflect N status at various points in the growing season, integration with other measures/models [34][35][36][37][38][39][40][41][42] is required to generate an estimation of N requirement, and prescribe a mid-season application rate. The results of this study displayed consistent correlation of GlnLux glutamine with end-season yield, but in the future it may be interesting to test the leaf lamina instead of the midrib.…”

Section: Potential Of Leaf Gln and Glnlux As Tools For Field Researchmentioning

confidence: 99%

Mid-Season Leaf Glutamine Predicts End-Season Maize Grain Yield and Nitrogen Content in Response to Nitrogen Fertilization under Field Conditions

et al. 2017

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Abstract:After uptake in cereal crops, nitrogen (N) is rapidly assimilated into glutamine (Gln) and other amino acids for transport to sinks. Therefore Gln has potential as an improved indicator of soil N availability compared to plant N demand. Gln has primarily been assayed to understand basic plant physiology, rather than to measure plant/soil-N under field conditions. It was hypothesized that leaf Gln at early-to-mid season could report the N application rate and predict end-season grain yield in field-grown maize. A three-year maize field experiment was conducted with N application rates ranging from 30 to 218 kg ha −1 . Relative leaf Gln was assayed from leaf disk tissue using a whole-cell biosensor for Gln (GlnLux) at the V3-V14 growth stages. SPAD (Soil Plant Analysis Development) and NDVI (Normalized Difference Vegetation Index) measurements were also performed. When sampled at V6 or later, GlnLux glutamine output consistently correlated with the N application rate, end-season yield, and grain N content. Yield correlation outperformed GreenSeeker TM NDVI, and was equivalent to SPAD chlorophyll, indicating the potential for yield prediction. Additionally, depleting soil N via overplanting increased GlnLux resolution to the earlier V5 stage. The results of the study are discussed in the context of luxury N consumption, leaf N remobilization, senescence, and grain fill. The potential and challenges of leaf Gln and GlnLux for the study of crop N physiology, and future N management are also discussed.

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Integrated Control of Nitrate Uptake by Crop Growth Rate and Soil Nitrate Availability under Field Conditions

Cited by 114 publications

References 51 publications

Uptake of mineral nitrogen from subsoil by winter wheat

Uptake of mineral nitrogen from subsoil by winter wheat

Pea nodule gradients explain N nutrition and limited symbiotic fixation in hypernodulating mutants

Mid-Season Leaf Glutamine Predicts End-Season Maize Grain Yield and Nitrogen Content in Response to Nitrogen Fertilization under Field Conditions

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