The Identification and Expression Analysis of the Liriodendron chinense (Hemsl.) Sarg. SOD Gene Family

Superoxide dismutase (oxide dismutase) is an enzyme synthesized via the expression of SOD-related genes. It first line defense against oxygen free radicals, and it widely exists in cytoplasm, chloroplasts, mitochondria. However, SOD gene family woody plant Liriodendron chinense has not been studied. To reveal potential role genes, we systematically identified analyzed L. chinense, investigated transcriptional responses LcSOD genes to several abiotic stresses, including cold, heat, drought. A total eight were identified, namely, five Cu/Zn-SODs, two Fe-SODs, one Mn-SOD, they divided into subgroups according phylogenetic analysis, structure, conserved motifs. Cis-acting element analysis reveals various hormones stress respond as cis-acting elements promoters LcSODs. Gene shows that most response stresses at level. These results help clarifying function under provide targets for improvement tolerance endangered chinense.