Urediospores of rust fungi are ice nucleation active at > -10°C and harbor ice nucleation active bacteria - Morris, C. E; Sands, D. C; Glaux, C; Samsatly, J; Asaad, S; Moukahel, A. R; Gonçalves, Fábio Luiz Teixeira; Bigg, E. K (Atmospheric Chemistry and Physics, 2013)