Isolation and characterization of cDNA encoding cyclophilin gene from dormant bud of Camellia sinensis (L.) O. Kuntze

摘要

Environmental stresses such as drought; salinity temperature etc. significantly limit crop productivity plants (Ingram and Bartels, 1996). In most of the studies, stress-associated proteins may confer stress tolerance by activation of a large set of cyclophilin genes, which leads to accumulation of specific cellular proteins. Cyclophilins are highly conserved, ubiquitous, stress-induced proteins present in all subcellular compartments (Galat, 1999) which exert cellular protection during stress (Chouand Gasser, 1997). These proteins also mimic their responses similar to the application of abscisic acid (Kullertz et al, 1999; Chaves et al, 2003). Cyclophilins are involved in a wide variety of processes such as protein trafficking and maturation (Shieh et al, 1989; Ferreira et al, 1996), receptor complex stabilization (Leverson and Ness, 1998), apoptosis (Lin and Lechleiter, 2002), receptor signaling (Brazin et al, 2002; Yurchenko et al., 2002), RNA processing (Krzywicka et al, 2001), and spliceosomeassembly (Horowitz et al, 2002).