Enhanced Nitric Oxide Synthesis Through Nitrate Supply Improves Drought Tolerance of Sugarcane Plants oleh Maria Dolores Pissolato, Neidiquele Maria Silveira, Paula Joyce Carrenho Prataviera, Eduardo Caruso Machado, Amedea Barozzi Seabra, Milena Trevisan Pelegrino, Ladaslav Sodek, Rafael V. Ribeiro