|
|
|
|
| LEADER |
01000caa a22002652 4500 |
| 001 |
NLM118509543 |
| 003 |
DE-627 |
| 005 |
20231227123059.0 |
| 007 |
tu |
| 008 |
231222s2002 xx ||||| 00| ||eng c |
| 028 |
5 |
2 |
|a pubmed24n1221.xml
|
| 035 |
|
|
|a (DE-627)NLM118509543
|
| 035 |
|
|
|a (NLM)11971922
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Wanek, Wolfgang
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Difference in delta(15)N signatures between nodulated roots and shoots of soybean is indicative of the contribution of symbiotic N(2) fixation to plant N
|
| 264 |
|
1 |
|c 2002
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
|
| 338 |
|
|
|a Band
|b nc
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 22.07.2002
|
| 500 |
|
|
|a Date Revised 13.12.2023
|
| 500 |
|
|
|a published: Print
|
| 500 |
|
|
|a Citation Status MEDLINE
|
| 520 |
|
|
|a Symbiotic N(2) fixation has a variable effect on the (15)N abundance of different parts of legumes. Increases in fixation result in (15)N enrichment of nodules, while decreases, in combination with an increased uptake of mineral N, result in (15)N depletion of the root system. The difference between soybean shoot and below-ground delta(15)N (Deltadelta(15)N=delta(15)N(shoot)-delta(15)N(belowground)) was assessed in hydroponic culture over a range of rates of supply of mineral N. The fractional contribution of N(2) fixation to N uptake (%Ndfa) was determined using the natural abundance (NA) technique with ryegrass as a reference plant. Deltadelta(15)N and %Ndfa were highly correlated, and the relationship was tested using the same soybean cultivar grown in pots in N-rich soil. Estimates of %Ndfa derived from the NA method and from the Deltadelta(15)N approach yielded near-identical values. A literature survey showed similar relationships between %Ndfa and Deltadelta(15)N with different growth stages of soybeans grown under glasshouse and field conditions, different cowpea (Vigna unguiculata) cultivars in the field, and tagasaste (Chamaecytisus proliferus) in hydroponic culture. Possible confounding and species-specific (either plant or Rhizobium spp.) influences are discussed. The difference in delta(15)N signatures between nodulated roots and shoots is confirmed as a robust means of quantifying %Ndfa: it is independent of reference plants and offers the possibility of estimating %Ndfa in soils where the isotope composition of mineral N closely matches that of atmospheric N(2)
|
| 650 |
|
4 |
|a Comparative Study
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
7 |
|a Nitrates
|2 NLM
|
| 650 |
|
7 |
|a Nitrogen Isotopes
|2 NLM
|
| 650 |
|
7 |
|a Potassium Compounds
|2 NLM
|
| 650 |
|
7 |
|a Soil
|2 NLM
|
| 650 |
|
7 |
|a Nitrogen
|2 NLM
|
| 650 |
|
7 |
|a N762921K75
|2 NLM
|
| 650 |
|
7 |
|a potassium nitrate
|2 NLM
|
| 650 |
|
7 |
|a RU45X2JN0Z
|2 NLM
|
| 700 |
1 |
|
|a Arndt, Stefan K
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 53(2002), 371 vom: 15. Mai, Seite 1109-18
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
|
| 773 |
1 |
8 |
|g volume:53
|g year:2002
|g number:371
|g day:15
|g month:05
|g pages:1109-18
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 53
|j 2002
|e 371
|b 15
|c 05
|h 1109-18
|