Agrobacterium-mediated transformation and assessment of factors influencing transgene expression in loblolly pine (Pinus taeda L.).

Abstract:

:This investigation reports a protocol for transfer and expression of foreign chimeric genes in loblolly pine (Pinus taeda L.). Transformation was achieved by co-cultivation of mature zygotic embryos with Agrobacterium tumefaciens strain LBA4404 which harbored a binary vector (pBI121) including genes for beta-glucuronidase (GUS) and neomycin phosphotransferase (NPTII). Factors influencing transgene expression including seed sources of loblolly pine, concentration of bacteria, and the wounding procedures of target explants were investigated. The expression of foreign gene was confirmed by the ability of mature zygotic embryos to produce calli in the presence of kanamycin, by histochemical assays of GUS activity, by PCR analysis, and by Southern blot. The successful expression of the GUS gene in different families of loblolly pine suggests that this transformation system is probably useful for the production of the genetically modified conifers.

journal_name

Cell Res

journal_title

Cell research

authors

Tang W

doi

10.1038/sj.cr.7290092

keywords:

subject

Has Abstract

pub_date

2001-09-01 00:00:00

pages

237-43

issue

3

eissn

1001-0602

issn

1748-7838

journal_volume

11

pub_type

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