Effect of nitrogen supply on growth and internal nitrogen cycling within deciduous trees

Millard, P.

doi:10.1051/forest:198905art0147

Cited by 8 publications

(8 citation statements)

References 2 publications

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“…This pattern of N concentration variation is in line with the report that temperate forests are characterized by seasonal variations of N concentration (Cerasoli et al, 2004; Nahm et al, 2006). Therefore, in analogy with Millard (1989) and Fotelli et al (2002), we suggest that also in our beech forest stands the decrease in N could be associated to utilization of the N reserve in order to support newly developing tissues and the increase with restoration of the N-depleted reserves.…”

Section: Resultssupporting

confidence: 86%

Fine-root carbon and nitrogen concentration of European beech (Fagus sylvatica L.) in Italy Prealps: possible implications of coppice conversion to high forest

Terzaghi¹,

Montagnoli²,

Iorio³

et al. 2013

Front. Plant Sci.

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Fine-root systems represent a very sensitive plant compartment to environmental changes. Gaining further knowledge about their dynamics would improve soil carbon input understanding. This paper investigates C and N concentrations in fine roots in relation to different stand characteristics resulting from conversion of coppiced forests to high forests. In order to evaluate possible interferences due to different vegetative stages of vegetation, fine-root sampling was repeated six times in each stand during the same 2008 growing season. Fine-root sampling was conducted within three different soil depths (0–10; 10–20; and 20–30 cm). Fine-root traits were measured by means of WinRHIZO software which enable us to separate them into three different diameter classes (0–0.5, 0.5–1.0 and 1.0–2.0 mm). The data collected indicate that N concentration was higher in converted stands than in the coppiced stand whereas C concentration was higher in the coppiced stand than in converted stands. Consequently the fine-root C:N ratio was significantly higher in coppiced than in converted stands and showed an inverse relationship with fine-root turnover rate, confirming a significant change of fine-root status after the conversion of a coppice to high forest.

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Section: Resultssupporting

confidence: 86%

Fine-root carbon and nitrogen concentration of European beech (Fagus sylvatica L.) in Italy Prealps: possible implications of coppice conversion to high forest

Terzaghi¹,

Montagnoli²,

Iorio³

et al. 2013

Front. Plant Sci.

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“…growth have considered horticultural species (Hill-Spring leaf growtb is, therefore, dependent largely Cottingham & Lloyd-Jones, 1975 ;Weinbaum, Klein upon the N supplied to the tree the previous year, & Muraoka, 1987;Millard & Neilsen, 1989). There because remobilization of N for leaf growth is are few quantitative data on the role of internal unaffected by the current N supply in a range of cycling of N for spring leaf growth in deciduous species (Millard & Neilsen, 1989;Millard & forest and woodland species. Thomson, 1989;Millard & Proe, 1990).…”

Section: Introductionmentioning

confidence: 99%

“…Neilsen, 1989). In addition to the withdrawal of N Tbe few studies that bave assessed the contribution from moribund leaves, root uptake of N can also be that remobilization of stored N makes to spring used to augment winter stores (Millard, 1989). growth have considered horticultural species (HillSpring leaf growtb is, therefore, dependent largely Cottingham & Lloyd-Jones, 1975 ; Weinbaum, Klein upon the N supplied to the tree the previous year, & Muraoka, 1987;Millard & Neilsen, 1989).…”

Section: Introductionmentioning

confidence: 99%

“…Ryan & Bormann, 1982; The seasonal internal cycling of nitrogen (N) in Staff, 1982;Vitousek, 1982;Ostman & Weaver, deciduous trees consists of tbe withdrawal of N from 1982; Flanagan & Van Cleve, 1983;Pereira et al, senescing leaves and storage as protein or amino 1988). Howe\er, for tree growth the main imacids during winter in perennial woody tissues, and portance of internal cycling is provision of N for leaf remobilization the following spring for leaf (and growth in tbe spring, before photosynthesis can root) growth (Titus & Kang, 1982;Millard & provide carbon skeletons for amino acid synthesis. Neilsen, 1989).…”

Section: Introductionmentioning

confidence: 99%

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Leaf demography and the seasonal internal cycling of nitrogen in sycamore (Acer pseudoplatanus L.) seedlings in relation to nitrogen supply

Millard¹,

Proe²

1991

New Phytologist

Self Cite

152

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SUMMARYThe dynamics of tbe seasonal internal cycling of nitrogen (N) in Acer psexidoplatonus were studied in relation to N supply and leaf demography. Trees were grown in sand culture, and throughout 1988, supplied with either 1-0 mol N m"' (Low N) or 6-0 mol N m •' (High N), labelled with '-"'N to 5-0 atom %, in order to precondition their growth and capacity for N storage over the winter period. In 1989, the initial spring growth of leaves was independent of the current N supply at either 1-0 or 6-0 mol N n-i '', and depended only upon the N supplied in 1988. A net loss of '-''N from perennial tissues and recovery of '^N in the growing leaves confirmed that the current N supply had no eflect on the remobilization of N from winter stores in the roots and stem. After 22 May 1989, remobilization of stored N for leaf growtb bad ceased and leaf den-iography was influenced by the current N supply. Plants preconditioned to 6-0 mol N m'^ in 1988, but receiving only 1-0 mol N m"" in 1989, were unable to sustain previous leaf growth after 22 May and there was a decrease in leaf mass and area due to leaf abscission. In contrast, trees preconditioned with 1-0 mol N m~^ in 1988, hut receiving 6-0 mol N m"'' in 1989 greatly increased tbeir leaf growth after 22 May. This was a consequence ofthe stimulation by N uptake of growth of n-iany small leaves on axillary shoots at the base of the canopy. Although leaf number increased, mean area per leaf decreased.The trees were inefficient at withdrawing N from senescing leaves in botb years, allowing most of the N to fall from the tree witb tbe leaves. The spring remobilization of N, therefore, was dependent largely upon the direct uptake of N into the stem and roots, in late summer and autumn, for storage over the winter period. Tbe results are discussed in relation to leaf demography and the nitrogen use efficiency of deciduous trees.

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“…Trees N internal cycling is considered as one of the major ecology factors for tree growth and is an augment for the tree uptake of soil N (Millard, 1989). In addition, it also helps to understand numerous aspects of plant ecology, for instance, to evaluate the effect of the N storage and remobilization in different part tissues of trees in relation to current demands for growth (Schneider et al, 1996), to find out the role of N on growth stress, the relationship with N deposition in forest (Gundersen, 1991;Gundersen et al, 1998) and the relationship with dynamics of carbon recourse in trees (Villar-Salvador et al, 2015;Han and Kabeya, 2017).…”

Section: Discussionmentioning

confidence: 99%

Association of Spectroscopically Determined Leaf Nutrition Related Traits and Breeding Selection in Sassafras Tzumu

Liu

Tan

et al. 2020

Preprint

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Background: The nutrition related to traits is an influential role in tree growth, tree production and nutrient cycling. Therefore, the influence of genetic parameters on leaf nutrition traits ought to take account of optimal tree breeding selection. However, the measurement methods are seriously affected by the progress of breeding selection program. In this study, we tested the ability of spectroscopy to quantify the specific leaf nutrition traits including Anthocyanins (ANTH), flavonoids (FLAV) and Nitrogen balance index (NBI), and estimated the genetic variation of these leaf traits based on the spectroscopic predicted data. Live fresh leaves of Sassafras tzumu were selected for spectral collection, after which concentrations of ANTH, FLAV and NBI were analyzed by standard analytical methods. Partial least squares regression (PLSR), five spectra pre-processing methods, and four variable selection algorisms were conducted for the optimal prediction model selection. Each trait model was simulated 200 times for error estimation.Results: The stander normal variation (SNV) to the ANTH model and 1st derivatives to the FLAV and NBI models, combined with significant Multivariate Correlation (sMC) algorithm variable selection are finally regarded as the best performance model. The ANTH model produced the highest accuracy of prediction with a mean R2 of 0.72 and mean RMSE of 0.10 %, followed by FLAV and NBI model (mean R2 =0.58, mean RMSE = 0.11 % and mean R2 =0.44, mean RMSE = 0.04 %). High heritability was found of ANTH FLAV and NBI with h2 of 0.78, 0.58 and 0.61 respectively. It shows that it is benefitting and possible of breeding selection for the improvement of leaf nutrition traits.Conclusions: Spectroscopy can successfully characterize the leaf nutrition traits in living tree leaves and the ability to simultaneous multiple plant traits provides a promising and high-throughput tool for the quick analysis of large size samples and serves for genetic breeding program.

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Effect of nitrogen supply on growth and internal nitrogen cycling within deciduous trees

Cited by 8 publications

References 2 publications

Fine-root carbon and nitrogen concentration of European beech (Fagus sylvatica L.) in Italy Prealps: possible implications of coppice conversion to high forest

Fine-root carbon and nitrogen concentration of European beech (Fagus sylvatica L.) in Italy Prealps: possible implications of coppice conversion to high forest

Leaf demography and the seasonal internal cycling of nitrogen in sycamore (Acer pseudoplatanus L.) seedlings in relation to nitrogen supply

Association of Spectroscopically Determined Leaf Nutrition Related Traits and Breeding Selection in Sassafras Tzumu

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