Inoculation of soil with T. harzianum T22 increase
nucleic acids content in shoots and roots of maize plants
as well as in plants developed from seeds treated with
the metabolic solution of T. harzianum T22. In tomato
plants inoculated with Trichoderma hamatum, the
expression of stress, cell wall and RNA metabolism
related genes were upregulated demonstrating
similarities of plant responses to T. Arabidopsis thaliana
harzianum (Alfano et al., 2007). T. harzianum which
alterate the genetic systems were up-regulated proteins
were the transcription factors and nuclear proteins RNA
polymerase (Guyomarc et al., 2006).