TY - JOUR T1 - The effects of trace elements, cations, and environmental conditions on protocatechuate 3,4-dioxygenase activity JO - Scientia Agricola A1 - Silva, Andréa Scaramal da A1 - Jacques, Rodrigo Josemar Seminoti A1 - Andreazza, Robson A1 - Bento, Fátima Menezes A1 - Camargo, Flávio Anastácio de Oliveira SN - 0103-9016 UL - 10.1590/S0103-90162013000200002 VL - 70 Y1 - 2013 PB - Brazil ER -