[1] Univ Sao Paulo Esalq, Dept Fitopatol & Nematol, Ave Padua Dias 11, BR-13418900 Piracicaba, Brazil
[2] Univ Brasilia, Dept Biol Mol, Brasilia, Brazil
[3] UNESP, Fac Ciencias Agron, Botucatu, SP, Brazil
[4] Univ Fed Piaui, Dept Fitotecnia, Teresina, PI, Brazil