publication venue for Further evidence from the effect of fungi on breaking Opuntia seed dormancy. 5:1229-1230. 2010-01-01 Ustilago maydis induced accumulation of putrescine in maize leaves. 4:310-312. 2009-01-01 Zmspds2 maize gene: Coding a spermine synthase?. 3:551-553. 2008-01-01