Biochar and disease

There is not much litterature on this issue as of yet but I found this intriguing article:

Elad, Y. et al. Induction of systemic resistance in plants by biochar, a soil-applied carbon sequestering agent. Phytopathology 100, 913–921 (2010).

I confess, I haven't read it through but the pictures are nice :) I will probably come back to this issue later on since my master's thesis discusses plant disease.