Expression of green fluorescent protein and its inheritance in transgenic oat plants generated from shoot meristematic cultures.

Abstract:

:The expression of green fluorescent protein (GFP) and its inheritance were studied in transgenic oat ( Avena sativa L.) plants transformed with a synthetic green fluorescent protein gene [sgfp(S65T)] driven by a rice actin promoter. In vitro shoot meristematic cultures (SMCs) induced from shoot apices of germinating mature seeds of a commercial oat cultivar, Garry, were used as a transformation target. Proliferating SMCs were bombarded with a mixture of plasmids containing the sgfp(S65T) gene and one of three selectable marker genes, phosphinothricin acetyltransferase (bar), hygromycin phosphotransferase (hpt) and neomycin phosphotransferase (nptII). Cultures were selected with bialaphos, hygromycin B and geneticin (G418), respectively, to identify transgenic tissues. From 289 individual explants bombarded with the sgfp(S65T) gene and one of the three selectable marker genes, 23 independent transgenic events were obtained, giving a 8.0% transformation frequency. All 23 transgenic events were regenerable, and 64% produced fertile plants. Strong GFP expression driven by the rice actin promoter was observed in a variety of tissues of the T(0) plants and their progeny in 13 out of 23 independent transgenic lines. Stable GFP expression was observed in T(2) progeny from five independent GFP-expressing lines tested, and homozygous plants from two lines were obtained. Transgene silencing was observed in T(0) plants and their progeny of some transgenic lines.

journal_name

Plant Cell Rep

journal_title

Plant cell reports

authors

Cho MJ,Choi HW,Okamoto D,Zhang S,Lemaux PG

doi

10.1007/s00299-002-0542-0

keywords:

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

467-74

issue

5

eissn

0721-7714

issn

1432-203X

journal_volume

21

pub_type

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