Isoprene, a type of hydrocarbon, is produced naturally by certain trees and plants to help them resist insects and high temperatures.
Isoprene is naturally present in plants to help them resist insect pests and high temperatures. But when produced in overly large quantities, it can come into contact with nitrogen oxides from pollution generated by car engines and coal-fired power plants, thereby worsening air pollution. The scientists based their work on the observation that increasing atmospheric CO2 decreases the rate of isoprene production, while rising temperatures accelerate it.
Source: Energy Industry News (energyindustrynews.net)