Gasoline Phytotoxicity. Gasoline also called gas or petrol, mixture of volatile, flammable liquid hydrocarbons derived from petroleum and used as fuel for internal-combustion engines. It is also used as a solvent for oils and fats.Gasoline is also called gas or gasoline, a mixture of volatile and flammable liquid hydrocarbons derived from petroleum and internal combustion engines for use. It is also used as a solvent for oils and greases. Fossil fuels remain the main source of energy and accounting for around 80% of the world's total supply. However, its exploration, recovery and use pose serious environmental problems, which are mainly associated with greenhouse gases and contamination of land and water resources. Phytoremediation is an alternative to more expensive sanitation technologies because it is a feasible, efficient and non-intrusive technology that uses natural plant processes to improve degradation and elimination of environmental contaminants. Phytotoxicity studies with native Brazilian trees on crude oil included plant growth, root length, biomass produced, tissue analysis, and so on. hairy root crops, etc. The effect of diesel-on-plant transpiration during free-flow experiment is normalized relative transpiration. S. parahyba showed a decrease in sweating in the presence of all the doses tested. Sweating was reduced by 53%, 42%, 59% and 26% to 8, 16, 33 and 66 gL-1, respectively. The effects were more severe for M. scabrella and E. contortisiliquum, with a maximum reduction of 76% and 82%, according to 16 and 66 gL-1, respectively. It was observed that the toxic reaction caused by sweating of low rates started at 48 h for M. scabrella and E. contortisiliquum, then for S. parahyba. Sweating rates were variable for S. parahyba,