Biogenic Volatile Organic Compounds Emission of Brazilian Atlantic Tree Grown Under Elevated Ozone in Ambient Controlled and Field Conditions.

Croton floribundus (L.) Spreng trees were exposed to accumulated ozone (O) levels under laboratory and field conditions and monitored the foliar visible symptoms and BVOC emissions. Plants exposed to O in the laboratory presented more substantial damage and significant increase in the BVOC emissions than plants in the field.

Volatile organic compounds and nitric oxide as responses of a Brazilian tropical species to ozone: the emission profile of young and mature leaves.

The emission profile of volatile organic compounds (VOCs) and nitric oxide (NO) in young and mature leaves of Croton floribundus was assessed in plants exposed to filtered air (FA) and ozone-enriched filtered air (FA+O). After the period of exposure, leaves were enclosed in polyethylene terephthalate bags and VOCs were collected in young and mature leaves. Both young and mature leaves constitutively emitted the same VOC, but the concentrations were higher in young leaves.