Natural abundance of 15N and 13C in nodulated legumes and other plants in the cerrado and neighbouring regions of Brazil

@article{Sprent2004NaturalAO,
  title={Natural abundance of 15N and 13C in nodulated legumes and other plants in the cerrado and neighbouring regions of Brazil},
  author={Janet Irene Sprent and Irene E. Geoghegan and P. W. Whitty and Euan K James},
  journal={Oecologia},
  year={2004},
  volume={105},
  pages={440-446}
}
Leaves from over 1000 Brazilian native plants growing in the cerrado and neighbouring regions were sampled for C and N content. Half of these were analysed for 15N and further samples for 13C and ash content. Nodulated legumes from all three sub-families were included, together with two types of reference plant, non-nodulated legumes and non-legumes. Particular emphasis was placed on the large caesalpinioid genus Chamaecrista which is here for the first time reported to fix nitrogen in its… Expand
Nodulation and nitrogen fixation by Mimosa spp. in the Cerrado and Caatinga biomes of Brazil.
TLDR
It is concluded that nodulation in Mimosa is a generic character, and that the preferred symbionts of Brazilian species are Burkholderia, in the first study to demonstrate N(2) fixation by beta-rhizobial symbioses in the field. Expand
Nitrogen fixation in legumes and actinorhizal plants in natural ecosystems: values obtained using 15N natural abundance
TLDR
Measurement of 15N natural abundance has given greater understanding of where legume and actinorhizal plant N2 fixation is important in natural ecosystems, and the average value for %Ndfa was substantially greater for actin ORHizal plants than for legumes. Expand
Biological nitrogen fixation in tree legumes of the Brazilian semi-arid caatinga.
TLDR
The BNF of tree legumes was estimated in four areas of the Brazilian dry forest (caatinga), analyzing potentially fixing species (target species) and non fixingspecies (reference species), using the 15N natural abundance methodology. Expand
Why is Abundance of Herbaceous Legumes Low in African Savanna? A Test with Two Model Species
TLDR
The main reason for the low abundance of C. mimosoides is not low P availability as such, but a greater ability of H. dissoluta to compete for soil N and P, and a much higher N-use efficiency, which could explain why herbaceous legumes are generally sparse in African savannas. Expand
15N natural abundance of non-fixing woody species in the Brazilian dry forest (caatinga)
TLDR
Foliar δ15N values constitute ideal reference plants in estimations of legume N2 fixation and N losses from ecosystems and could result from higher losses of 15N depleted gases or lower losses of enriched 15N material. Expand
Field assessment of symbiotic N2 fixation in wild and cultivated Cyclopia species in the South African fynbos by 15N natural abundance.
TLDR
The low variability in Cyclopia delta(15)N values within sites suggests that genetic variability is not a major factor influencing N(2) fixation rates in cultivated Cyclopia, and that more benefit may be gained from soil amelioration and the selection of improved rhizobial strains. Expand
Nitrogen nutrition, carbon accumulation and δ13C of Cyclopia and Aspalathus species in different settings of the Cape fynbos, South Africa
TLDR
Assessment of the effect of plant age, plant species, toposequence, planting material and farmer practice on nitrogen (N) nutrition and water-use efficiency of two Cyclopia and Aspalathus species in the Cape fynbos found symbiotic N nutrition andWater- use efficiency of Cyclopian and AsPalathus were related. Expand
N2-fixation in tropical american savannas evaluated by the natural abundance of 15N in plant tissues and soil organic matter
TLDR
1 5 N- and ureid abundance allowed identification of plants with associative N2-fixation and helped identify plants with Associative N 2 -fixation. Expand
Rhizobia symbiosis of seven leguminous species growing along Xindian riverbank of Northern Taiwan
TLDR
Results of stable isotope analyses revealed that the seven leguminous species had similar and consistently negative δ^(15)N values in leaves, whereas the values were positive in the nodules and significantly higher in the indeterminate nodules than those in the determinate ones. Expand
15N NATURAL ABUNDANCE IN WOODY PLANTS AND SOILS OF CENTRAL BRAZILIAN SAVANNAS (CERRADO)
TLDR
Foliar δ15N values did demonstrate the large range found in some other N-limited ecosystems, varying from −5‰ to +7.9‰, but several factors contributed to this variability, including the presence of N-fixing legumes, associations with mycorrhizal fungi, δ 15N variability of soil organic matter with depth, fire events, and the seasonality of N -immobilization and mineralization processes in cerrado soils. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 45 REFERENCES
Natural abundance of 15N in tropical plants with emphasis on tree legumes
TLDR
The δ 15N values of Panicum maximum and leguminous trees, except Leucaena leucocephala, were similar to those of non-N2-fixing trees, suggesting that the contribution of fixed N in these plants is negligible, and it is confirmed that these species are non-nodulating legumes. Expand
15 N natural abundance as a possible marker of the ectomycorrhizal habit of trees in mixed African woodlands.
TLDR
Data from Tanzanian miombo woodland showed a significant difference in 15 N abundance between ectomycorrhizal and vesicular-arbuscular (VA) mycorrhIZal reference species, which casts doubt upon arbitrary selection of reference species and raises the possibility of using 15N abundance as a marker of the ectomyCorrhizAL habit. Expand
Nutrition, moisture and rhizobial strain influence isotopic fractionation during N2, fixation in pasture legumes
TLDR
Although these effects were small, they indicate reduced precision in estimates of isotopic fractionation, and therefore of N 2 fixation using natural 15 N abundance using natural15 N abundance. Expand
Estimates of nitrogen fixation by trees on an aridity gradient in Namibia
TLDR
N2 fixation was associated with reduced intrinsic water use efficiency and higher δ15N-values of Mimosaeae are associated with lower carbon isotope ratios (δ13C value), while the opposite trends were found in non-Mimosaceae, in which N-concentration increased with δ 15N, but δ12C was unaffected. Expand
Aluminium accumulation by some cerrado native species of central Brazil
TLDR
In spite of the low pH and the low base saturation of the soil the aluminium-accumulating species seem to have an efficient mechanism for absorbing all cations from the soil. Expand
Morphological and agronomic attributes of Cassia rotundifolia Pers., C. pilosa L., and C. trichopoda Benth., potential forage legumes for northern Australia
TLDR
This paper reports variation in phenology, morphology, feeding value and environmental adaptation of 18 accessions of Cassia rotundifolia and one each of C. pilosa and C. trichopoda at a number of sites in Queensland and the Northern Territory. Expand
ECTOMYCORRHIZAL ASSOCIATIONS OF AUSTRALIAN INDIGENOUS PLANTS
TLDR
Besides species of Eucalyptus, Leptospermum, Casuarina and Pomaderris, many other Australian native plants may form ectomycorrhizal associations, which range from large forest trees to small non-woody herbs. Expand
NEW NODULATING LEGUME TREES FROM SOUTH‐EAST BRAZIL
TLDR
An extensive search for active (acetylene reducing) nitrogen-fixing root nodules was made amongst Brazilian forest legumes, finding seven new nodulated species, including two new nodulating genera, in the Caesalpinioideae and 30 new-species in the Papilionoideae. Expand
Molecular separation of genera in Cassiinae (Leguminosae), and analysis of variation in the nodulating species of Chamaecrista
TLDR
Analysis of a small sample of five Chamaecrista species from Brazil with eight primers gave separation consistent with known variations in nodule structure, which was lower than between populations from different geographic regions, between species and genera. Expand
The evolutionary significance of the legume genus Chamaecrista, as determined by nodule structure.
TLDR
Nodules of the genus Chamaecrista appeared to be at an evolutionary crossroads between the primitive and more advanced forms. Expand
...
1
2
3
4
5
...