当前位置： SCI文献检索 > JOURNAL OF EXPERIMENTAL BOTANY期刊下所有文献 > Greenhouse and field testing of transgenic wheat plants stably expressing genes for thaumatin-like protein, chitinase and glucanase against Fusarium graminearum.

Greenhouse and field testing of transgenic wheat plants stably expressing genes for thaumatin-like protein, chitinase and glucanase against Fusarium graminearum.

Abstract：

:Genes encoding pathogenesis-related (PR-) proteins isolated from a cDNA library of Fusarium graminearum-infected wheat spikes of scab-resistant cultivar 'Sumai-3' were transformed into susceptible spring wheat, 'Bobwhite' using a biolistic transformation protocol, with the goal of enhancing levels of resistance against scab. Twenty-four putative transgenic lines expressing either a single PR-protein gene or combinations thereof were regenerated. Transgene expression in a majority of these lines (20) was completely silenced in the T(1) or T(2) generations. Four transgenic wheat lines showed stable inheritance and expression of either a single transgene or transgene combinations up to four generations. One line co-expressing a chitinase and beta-1,3-glucanase gene combination, when bioassayed against scab showed a delay in the spread of the infection (type II resistance) under greenhouse conditions. This line and a second transgenic line expressing a rice thaumatin-like protein gene (tlp) which had moderate resistance to scab in previous greenhouse trials, along with susceptible and resistance checks were evaluated for resistance to scab under field conditions. None of the transgenic lines had resistance to scab in the field under conditions of strong pathogen, suggesting these plants lacked effective resistance to initial infection (type I resistance) under these conditions. As far as is known, this is the first report of field evaluation of transgenic wheat expressing genes for PR-proteins against disease resistance.

journal_name

J Exp Bot

journal_title

Journal of experimental botany

authors

Anand A,Zhou T,Trick HN,Gill BS,Bockus WW,Muthukrishnan S

doi

10.1093/jxb/erg110

keywords:

subject

Has Abstract

pub_date

2003-03-01 00:00:00

pages

1101-11

issue

384

eissn

0022-0957

issn

1460-2431

journal_volume

54

pub_type

杂志文章

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