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Titolo:
Natural abundance of N-15 in actinorhizal plants and nodules
Autore:
Tjepkema, JD; Schwintzer, CR; Burris, RH; Johnson, GV; Silvester, WB;
Indirizzi:
Univ Maine, Dept Biol Sci, Orono, ME 04469 USA Univ Maine Orono ME USA 04469 v Maine, Dept Biol Sci, Orono, ME 04469 USA Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 , Dept Biochem, Madison, WI 53706 USA Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA Univ New Mexico Albuquerque NM USA 87131 Biol, Albuquerque, NM 87131 USA Univ Waikato, Dept Biol Sci, Hamilton, New Zealand Univ Waikato HamiltonNew Zealand Dept Biol Sci, Hamilton, New Zealand
Titolo Testata:
PLANT AND SOIL
fascicolo: 1-2, volume: 219, anno: 2000,
pagine: 285 - 289
SICI:
0032-079X(2000)219:1-2<285:NAONIA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYAMINES; ENRICHMENT; SYSTEMS; LEGUMES;
Keywords:
actinorhizal plants; Frankia; N-15 natural abundance; nitrogen fixation; Parasponia;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Tjepkema, JD Univ Maine, Dept Biol Sci, Orono, ME 04469 USA Univ Maine Orono ME USA 04469 Biol Sci, Orono, ME 04469 USA
Citazione:
J.D. Tjepkema et al., "Natural abundance of N-15 in actinorhizal plants and nodules", PLANT SOIL, 219(1-2), 2000, pp. 285-289

Abstract

Substantial enrichment of some plant parts in N-15 relative to the rest ofthe plant is unusual, but is found in the nitrogen-fixing nodules of many legumes. A range of actinorhizal plants was surveyed to determine whether the nodules of any of them are also substantially enriched in N-15. The nonlegume Parasponia, nodulated by a rhizobium, was also included. Four of the actinorhizal genera and Parasponia were grown in N-free culture, and three actinorhizal genera were collected from the field. Nodules of Parasponia, Casuarina and Alnus were N-15 enriched relative to other plant parts, but only Parasponia approached the degree of enrichment found in some legume nodules. The nodules of Datisca, Myrica, Elaeagnus, Shepherdia, and Coriaria were depleted in N-15. Thus many actinorhizal nodules are depleted in N-15 compared to other plant parts and enrichment is modest when it does occur. Whole plant N-15 content (delta(15)N) in four actinorhizal plants and Parasponia showed a relatively narrow range of -1.41 to -1.90. Hence regardless ofthe degree of nodule enrichment or depletion, whole plant N-15 content appears to vary little in plants grown in N-free culture.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 20:50:44