title: The rice thylakoid lumenal cyclophilin OsCYP20-2 confers enhanced environmental stress tolerance in tobacco and Arabidopsis.
abstract: The role that the putative thylakoid lumenal cyclophilin (CYP) CYP20-2 locates in the thylakoid, and whether CYP20-2 is an essential gene, have not yet been elucidated. Here, we show that CYP20-2 is well conserved in several photosynthetic plants and that the transcript level of the rice OsCYP20-2 gene is highly regulated under abiotic stress. We found that ectopic expression of rice OsCYP20-2 in both tobacco and Arabidopsis confers enhanced tolerance to osmotic stress and extremely high light. Based on these results, we suggest that although the exact biochemical function of OsCYP20-2 in the thylakoid lumen (TL) remains unclear, it may be involved in photosynthetic acclimation to help plants cope with environmental stress; the OsCYP20-2 gene may be a candidate for enhancing multiple abiotic stress tolerance.
authors: Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, Korea.
authors: Se-Kyong
authors: SK
authors: Kim
authors: Young Nim
authors: YN
authors: You
authors: Jong Chun
authors: JC
authors: Park
authors: Younghee
authors: Y
authors: Joung
authors: Beom-Gi
authors: BG
authors: Kim
authors: Jun Cheul
authors: JC
authors: Ahn
authors: Hye Sun
authors: HS
authors: Cho
mesh_terms: D000222:Adaptation, Physiological / Q000187:drug effects / Q000235:genetics / Q000528:radiation effects; D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000187:drug effects / Q000235:genetics / Q000502:physiology* / Q000528:radiation effects; D017124:Conserved Sequence / Q000235:genetics; D021983:Cyclophilins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D055864:Droughts; D004777:Environment; D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000528:radiation effects; D017343:Genes, Plant / Q000235:genetics; D008027:Light; D008969:Molecular Sequence Data; D009252:NADPH Dehydrogenase / Q000378:metabolism; D012275:Oryza / Q000187:drug effects / Q000378:metabolism* / Q000528:radiation effects; D010269:Paraquat / Q000494:pharmacology; D019696:Peptidylprolyl Isomerase / Q000378:metabolism; D045332:Photosystem II Protein Complex / Q000378:metabolism; D010802:Phylogeny; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D030821:Plants, Genetically Modified; D016415:Sequence Alignment; D013312:Stress, Physiological / Q000187:drug effects / Q000235:genetics / Q000528:radiation effects; D020524:Thylakoids / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism* / Q000528:radiation effects; D014026:Nicotiana / Q000187:drug effects / Q000235:genetics / Q000502:physiology* / Q000528:radiation effects
chemical_list: D045332:Photosystem II Protein Complex; D010940:Plant Proteins; D009252:NADPH Dehydrogenase; D021983:Cyclophilins; D019696:Peptidylprolyl Isomerase; D010269:Paraquat