A (silencing signal) can be systemic.Logical formLearned from1 sentences. Mechanisms may underly silencing.Logical formLearned from1 sentences. Silencing may be transmitted to a scion.Logical formLearned from1 sentences. Lines may show silencing.Logical formLearned from1 sentences. Silencing may undergo triggerings.Logical formLearned from1 sentences. Triggerings of silencing may be observed.Logical formLearned from1 sentences. Silencing may undergo a transmission.Logical formLearned from1 sentences. Silencing may spread to a scion.Logical formLearned from1 sentences. Silencing may undergo an establishment.Logical formLearned from1 sentences. An establishment of silencing may take some wk.Logical formLearned from1 sentences. Silencing may spread through a graft to a scion.Logical formLearned from1 sentences. A silencing can be established.Logical formLearned from1 sentences. Silencing may undergo spreadings.Logical formLearned from1 sentences. Spreadings of silencing can be unidirectional.Logical formLearned from1 sentences. Silencing can be for genes.Logical formLearned from1 sentences.