[Inducible expression of a promoter of the gene encoding barley beta-1, 3-glucanase isoenzyme GIII in transgenic rice].
A promoter of the gene encoding beta-1, 3-glucanase isoenzyme GIII was amplified from barley genomic DNA using PCR. The GIII gene promoter, designated P(GIII), was ligated upstream of the gus report gene and pGIII-gus fusion fragment was then cloned into a binary vector pCAMBIA1300 for Agrobacterium-mediated transformation of rice (Oryza sativa L. cv. Taipei 309). PCR analyses indicated that the fusion gene was present in all T0 transgenic plants. The integration of the gene into rice genomic DNA was further confirmed by Southern blot. Histochemical staining and spectrofluorophotometric analyses of transgenic rice leaves showed that the GUS activity was increased after treatment with SA and fungal elicitor. Northern blot analysis also showed expression of such induction. Histochemical staining of T(1) rice seeds displayed marked GUS activity after induction with SA and elicitor, while no GUS activity was detected in untreated T(1) rice seeds. The results presented here strongly suggested that P(GIII) could be pathogen-inducible promoter.
Li
Yun-Feng
YF
The Key Laboratory of Gene Engineering of the Education Ministry, Zhongshan University, Guangzhou 510275, China.
Zhu
Rui
R
Xie
Long-Xu
LX
Xu
Pei-Lin
PL
D015152:Blotting, Northern; D015139:Blotting, Southern; D018506:Gene Expression Regulation, Plant; D043326:Glucan 1,3-beta-Glucosidase / Q000235:genetics*; D005966:Glucuronidase / Q000235:genetics / Q000378:metabolism; D001467:Hordeum / Q000201:enzymology / Q000235:genetics*; D007527:Isoenzymes / Q000235:genetics; D012275:Oryza / Q000235:genetics*; D030821:Plants, Genetically Modified / Q000235:genetics*; D016133:Polymerase Chain Reaction; D011401:Promoter Regions, Genetic / Q000235:genetics*; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism
D007527:Isoenzymes; D011993:Recombinant Fusion Proteins; D005966:Glucuronidase; D043326:Glucan 1,3-beta-Glucosidase