The Relation of Acids and Peroxides in Spray Oils to the Respiration of Sprayed Bean Leaves and the Development of Injury

Phytotoxicity of hydrocarbons

“…But while enzymatic or other oxidation occurring within the plant may be an important aspect of chronic oil injury, it is less likely that this is true of acute injury, and particularly with reference to the compounds dealt with here. Further investigations are desirable to determine to what extent permeability factors are involved in chronic toxicity, and also in the quite rapid killing by highly acidic oils (Johnson and Hoskins, 1952).…”

“…The retarding effect on respiratory activity of bean leaves by oxidized spray oils was studied by Johnson and Hoskins (1952). They found that acids and peroxides produced by laboratory oxidation at high temperature markedly increased the toxicity of highly refined spray oils containing almost entirely saturated aliphatic and naphthenic compounds.…”

The Effect of Gaseous Ozone, Hexene, and Their Reaction Products upon the Respiration of Lemon Fruit

“…It has been reported (8, lfi) that plants are affected by ozone, althou^'h no respiration studies were made. Hydrocarbons in the form of oils applied to the leaves have heen reported to change the respiration rate (5,10,14) altboujjh this change appears to be due to the acids and peroxides present in the oil (9).…”

Oil Pollution Affects the Central Metabolism of Keystone Vachellia (Acacia) Trees

“…Oil pollution was shown to reduce transpiration and photosynthetic rates and change plant metabolism [16]. It can also cause oxidative stress and alter the concentration of phenols and flavonoid compounds [17,18], compromise the synthesis of sugars [19], cause the accumulation of starch in the leaves [20], and increase the levels of free amino acids and total protein [21]. It can also reduce seeds' germination success and hinder their root development [22].…”