Alpine plants show species-level differences in the uptake of organic and inorganic nitrogen

@article{citeulike:1300635, abstract = {As an estimate of species-level differences in the capacity to take up different forms of N, we measured plant uptake of 15N-NH4+, 15N-NO3- and 15N, [1]-13C glycine within a set of herbaceous species collected from three alpine community types. Plants grown from cuttings in the greenhouse showed similar growth responses to the three forms of N but varied in the capacity to take up NH4+, NO3- and glycine. Glycine uptake ranged from approximately 42\% to greater than 100\% of NH4+ uptake; however, four out of nine species showed significantly greater uptake of either NH4+ or NO3- than of glycine. Relative concentrations of exchangeable N at the sites of plant collection did not correspond with patterns of N uptake among species; instead, species from the same community varied widely in the capacity to take up NH4+, NO3-, and glycine, suggesting the potential for differentiation among species in resource (N) use.}, author = {Miller, A. E. and Bowman, W. D. }, citeulike-article-id = {1300635}, keywords = {13c, 15n, 2007-64, alpine, amino-acids}, month = {March}, pages = {283--292}, posted-at = {2007-05-16 19:21:42}, priority = {2}, title = {Alpine plants show species-level differences in the uptake of organic and inorganic nitrogen}, url = {http://www.ingentaconnect.com/content/klu/plso/2003/00000250/00000002/05101119} }

TY - JOUR ID - citeulike:1300635 L3 - citeulike-article-id:1300635 TI - Alpine plants show species-level differences in the uptake of organic and inorganic nitrogen SP - 283 EP - 292 N2 - As an estimate of species-level differences in the capacity to take up different forms of N, we measured plant uptake of 15N-NH4+, 15N-NO3- and 15N, [1]-13C glycine within a set of herbaceous species collected from three alpine community types. Plants grown from cuttings in the greenhouse showed similar growth responses to the three forms of N but varied in the capacity to take up NH4+, NO3- and glycine. Glycine uptake ranged from approximately 42% to greater than 100% of NH4+ uptake; however, four out of nine species showed significantly greater uptake of either NH4+ or NO3- than of glycine. Relative concentrations of exchangeable N at the sites of plant collection did not correspond with patterns of N uptake among species; instead, species from the same community varied widely in the capacity to take up NH4+, NO3-, and glycine, suggesting the potential for differentiation among species in resource (N) use. KW - 13c KW - 15n KW - 2007-64 KW - alpine KW - amino-acids AU - Miller, AE AU - Bowman, WD UR - http://www.ingentaconnect.com/content/klu/plso/2003/00000250/00000002/05101119 ER -