Comparative transcriptomic profiles of Paulownia catalpifolia under different degrees of chilling stress during the seedling stage.

Background: Paulownia, an ecologically and economically valuable plant species native to China, is notable for its excellent timber quality and strong adaptability. Among them, Paulownia catalpifolia displays the ability to survive in cold climate, a trait associated with northern China. Yet, the molecular information for its cold-tolerance has not been explored.