Thiamin has been reported to alleviate the effects of
several environmental stresses in plants. The exogenous
application of thiamin was shown to counteract
by all biological systems. While TPP is synthesized
de novo in plants and microbes, animals and
humans must derive this cofactor through the intake
of free (unphosphorylated) thiamin (vitamin B1). Due
to the abundance of thiamin in whole grains and green the harmful effects of salinity on growth (Sayed and
Gadallah 2002) and to confer resistance to fungal,
bacterial, and viral infections in rice (Oryza sativa),
Arabidopsis (Arabidopsis thaliana), and specific vegetable
crop species (Ahn et al., 2005)