Section 3
Chapter 2,406

In planta analysis of the Agrobacterium tumefaciens T-cyt gene promoter: identification of an upstream region essential for promoter activity in leaf, stem and root cells of transgenic tobacco

Neuteboom, S.T.; Hulleman, E.; Schilperoort, R.A.; Hoge, J.H.

Plant Molecular Biology 22(5): 923-929


ISSN/ISBN: 0167-4412
PMID: 8358039
DOI: 10.1007/bf00027379
Accession: 002405687

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The promoter region of the Agrobacterium tumefaciens T-cyt gene was fused to a beta-glucuronidase (gusA) reporter gene and introduced into tobacco plants. Detection of gusA expression in transgenic F1 progeny revealed that the T-cyt promoter is active in many, if not all, cell types in leaves, stems and roots of fully developed plants. Developmental stage-dependent promoter activity was observed in seedlings. Analysis of 5'-deleted promoter fragments showed that sequences located between positions -185 and -139 with respect to the T-cyt translational start codon are essential for T-cyt promoter activity in transfected tobacco protoplasts as well as in transformed tobacco plants.

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