title: Ion beam transformation with corn DNA alters proteinase expression in rice seedling roots.
abstract: Corn DNA was introduced into dry seeds of rice (cv. 'YuJing-6') by ion beam irradiation. Proteinase activities in rice seedling roots were subsequently analyzed by renaturation electrophoresis at pH 4.5, 7.0, and 8.5. Proteinase activity was more pronounced on gels at higher pH. Irradiation of rice seedling roots caused the loss of some proteinase bands at all pH conditions although a novel 50-kDa band was found at both pH 7.0 and 8.5. No new proteinase activity was detected at pH 4.5. However, novel bands and bands showing stronger activity were observed at pH 7.0 and 8.5. The data indicate that the expression of proteinases in rice seedling roots was altered following low energy ion beam mediated transformation with corn DNA.
authors.affiliation: Department of Urinary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
authors.forename: W C
authors.initials: WC
authors.lastname: Li
authors.affiliation: Department of Urinary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
authors.forename: S D
authors.initials: SD
authors.lastname: Ji
authors.affiliation: Department of Urinary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
authors.forename: X C
authors.initials: XC
authors.lastname: Wang
authors.affiliation: Department of Urinary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
authors.forename: Z K
authors.initials: ZK
authors.lastname: Li
authors.affiliation: Department of Urinary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
authors.forename: H C
authors.initials: HC
authors.lastname: Zhang
authors.affiliation: Department of Urinary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
authors.forename: C Z
authors.initials: CZ
authors.lastname: Tian
authors.forename: Y L
authors.initials: YL
authors.lastname: Liu
authors.affiliation: Department of Hematology, Harbin Medical University Tumor Hospital, Harbin, China.
authors.forename: C X
authors.initials: CX
authors.lastname: Duan
mesh_terms: D018744:DNA, Plant / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel; D057075:Enzyme Assays; D015870:Gene Expression; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D009584:Nitrogen / Q000737:chemistry; D012275:Oryza / Q000201:enzymology / Q000235:genetics*; D010447:Peptide Hydrolases / Q000235:genetics / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D018517:Plant Roots / Q000201:enzymology / Q000235:genetics; D011840:Radiation, Nonionizing; D036226:Seedlings / Q000201:enzymology / Q000235:genetics; D012639:Seeds / Q000201:enzymology / Q000235:genetics*; D014170:Transformation, Genetic; D003313:Zea mays / Q000737:chemistry*
chemical_list: D018744:DNA, Plant; D007477:Ions; D010940:Plant Proteins; D010447:Peptide Hydrolases; D009584:Nitrogen