title: A red algal cyclophilin has an effect on development and growth in Nicotiana tabacum.
abstract: In this study, an algal Cyp was introduced into plant to research the effect of the gene on growth and development. cDNA GjCyp-1 was isolated from the red alga (Griffithsia japonica), and a recombinant GjCyp-1 containing a CaMV35S promoter at the amino-terminus was constructed in Nicotiana tabacum. The altered GjCyp-1 levels in plants and the expression pattern of Cyp after hormone treatment were confirmed by RNA blotting. Transcript of GjCyp-1 was induced by plant hormones such as gibberellic acid (GA(3)), indoleacetic acid (IAA), and zeatin (ZA). Constitutive overexpression of GjCyp-1 appeared to be beneficial to seed germination. The ratio of emergence of cotyledon from seeds overexpressing GjCyp-1 was almost three times higher than that of the transgenic seeds carrying only the vector. In addition, it was found that most of the seedlings overexpressing GjCyp-1 were dwarfs with altered root systems. The ratio of leaf length and width and root length from transgenic seedlings overexpressing GjCyp-1 was almost 2 and 3.5 times lower than that of the transgenic seedlings carrying only the vector, respectively. The data in this study suggest that GjCyp-1 may affect development and growth in organisms.
authors.affiliation: Department of Bio-Food Materials, College of Medical Life Science, Silla University, Busan, Republic of Korea. choeun@silla.ac.kr
authors.forename: Eun Kyung
authors.initials: EK
authors.lastname: Cho
authors.forename: Mihyang
authors.initials: M
authors.lastname: Kim
mesh_terms: D021983:Cyclophilins / Q000502:physiology*; D030821:Plants, Genetically Modified / Q000235:genetics / Q000254:growth & development*; D000461:Rhodophyta / Q000378:metabolism*; D014026:Nicotiana / Q000235:genetics / Q000254:growth & development*
chemical_list: D021983:Cyclophilins