@article {KNZ00983,
	title = {Nitrogen enrichment causes minimal changes in arbuscular mycorrhizal colonization but shifts community composition - evidence from rDNA data},
	journal = {Biology and Fertility of Soils},
	volume = {41},
	year = {2005},
	pages = {217 -224},
	abstract = {Intracellular arbuscular mycorrhizal (AM) colonization was compared between nitrogen (NH4NO3) fertilized (10 g N m-2) and nonfertilized tallgrass prairie plots. In the microscopic analyses of host roots, only intracellular coils showed an increasing trend as a result of N fertilization, whereas intracellular colonization by arbuscules, hyphae, or vesicles did not differ between the N treatments. Clone libraries established from pooled PCR products of AM fungi contained exclusively species of Glomus; no other genera were detected indicating that Glomus spp. dominated the host roots. Comparisons between observed and random topologies indicated that cloned sequence placement covaried with N treatment: unique clades within Glomus originated exclusively from N-fertilized or nonfertilized treatments. We conclude that the communities of dominant and most commonly occurring AM fungi changed in response to N amendment, although the root colonization showed minimal or no response.},
	keywords = {LTER-KNZ, Arbuscular mycorrhiza, Nitrogen deposition, Ribosomal DNA, tallgrass prairie},
	doi = {10.1007/s00374-005-0845-8},
	author = {A. Jumpponen and Trowbridge, J. and Mandyam, K.G. and Johnson, L.C.}
}
