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Natural 15N abundance of NH4+, amide N, and total N in various fractions of nodules of peas, soybeans and lupins



Natural 15N abundance of NH4+, amide N, and total N in various fractions of nodules of peas, soybeans and lupins



Australian Journal of Plant Physiology 16(4): 305-313



Root nodules of certain N2-fixing legumes are substantially enriched in 15N compared with non-nodular tissues. This enrichment usually resides largely within bacteroids. Isotope discrimination associated with export of ammonia(um) from the bacteroid would result in 15N enrichment of NH4+ within bacteroids. Bacteroid protein synthesis from this pool of 15N enriched NH4+ would then account for enrichment of the bacteroids.

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Accession: 001891996

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