High nitrogen fertilization and stem leaning have overlapping effects on wood formation in poplar but invoke largely distinct molecular pathways. by Pitre, F, Lafarguette, F, Boyle, B, Pavy, N, Caron, S, Dallaire, N, Poulin, P, Ouellet, M, Morency, M, Wiebe, N, Ly Lim, E, Urbain, A, Mouille, G, Cooke, J, Mackay, J