Activation of the biochemical plant protection mechanisms from oil pollution and para-aminobenzoic acid
The article explores the topic of the influence of oil pollution on the biochemical plant protection systems. The tests were carried out on the species of the narrow-leaved catoptric (Typha angustifolia L.) and hoary sedge (Carex canescens L.) collected from an oil spill in Kalchinskoe field of the Tyumen region. we also used cultivated oat (Avena sativa L.) which was grown in the oil contaminated soil and watered with oil contaminated water from Kalchinskoe field. The article states that the morpho-physiological and biochemical features of the cultivated oat growing in the oil contaminated soil are negatively affected. Such negative effect was smaller in the cultivated oat watered with oil contaminated water. The narrow-leaved catoptric is the least sensitive to oil pollution and the hoary sedge is the most sensitive. Oil pollution causes development of lipid peroxygenation products such as Schiff's bases and diethenoid conjugates in the plant cells. The damaging effect is neutralized by biochemical protection systems of the plants (such as carotinoid, flavonoid and phenolic). Para-aminobenzoic acid partially eliminates the negative effect of oil. It leads to increase in the concentration of chlorophyll, carotinoid and flavonoids. Phenols are the most effective substances in the biochemical plant protection system against oxidative stress.