期刊
ACTA PHYSIOLOGIAE PLANTARUM
卷 31, 期 2, 页码 351-358出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11738-008-0241-8
关键词
Hypericum perforatum; Hairy root-regenerants; Hypericins; Dark glands; rol genes
资金
- Slovak Research and Development Agency [APVT-20003704, VVCE-0001-07, 0321-07]
- Scientific Grant Agency of the Slovak Republic [1/2326/05, 1/0049/08]
Hairy root-regenerated clones of Hypericum perforatum L. grown in vitro similarly to those successfully adapted to ex vitro conditions showed phenotype features typical for plants transformed with Agrobacterium rhizogenes T-DNA. These included reduced apical dominance, increased branching, dwarfing and reduced fertility. Transgenic clones differed in ability to develop root system as a necessary condition for transfer to the soil. One of the profiling characters, capability of hypericin biosynthesis was altered as well. Dark glands as the sites of hypericin accumulation and/or synthesis exhibited significantly higher densities on both, leaves and petals of transgenic clones comparing to controls. In the genome of transgenic clones, rolABC genes were detected. Both clones harboured similar copy number of individual rol genes. However, copy numbers descended from rolA to rolC gene in both clones.
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