Evaluation of the HRPN Gene for Increasing Resistance to Fire Blight in Transgenic Apple

Abdul-Kader, A.; Norelli, J.L.; Aldwinckle, Herb S.; Bauer, D.W.; Beer, Steven V.

doi:10.17660/actahortic.1999.489.40

Cited by 8 publications

(3 citation statements)

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“…These results confirmed preliminary data obtained in transgenic apple expressing this gene under the control of the inducible pro- moter Gst1 [1]. In a nonhost plant, the expression of harpin N Ea also led to normal growth in the case of potato [37], explained by a harpin N Ea expression lower than the necessary threshold for necrosis.…”

Section: Discussionsupporting

confidence: 88%

“…A similar strategy, based on the expression of the harpin N Ea from E. amylovora under the pathogen-inducible promoter gst1, was tested on nonhost plants of fire blight, and it decreased the infection of A. thaliana by the oomycete Peronospora parasitica [5] and of potato by the oomycete Phythophthora infestans [37]. Work is also in progress to study the effects of a constitutive or pathogen-inducible expression of harpin N Ea in transgenic apple [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Expression of a bacterial effector, harpin N, causes increased resistance to fire blight in Pyrus communis

Malnoy

Venisse

Chevreau³

2005

Tree Genetics & Genomes

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Expression of a bacterial effector, harpin N, causes increased resistance to fire blight in Pyrus communis

Malnoy

Venisse

Chevreau³

2005

Tree Genetics & Genomes

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“…The gene encoding for harpin N (hrpN) under the control of the promoter Pgst1, which is induced in E. amylovora challenged leaves [84,85] and under the weak constitutive promoter nos with and without a signal peptide (SP) which should direct the harpin N to the intercellular space, were introduced into the rootstock M.26 [86]. Transgenic plants expressing hrpN under the control of the nos promoter have been obtained [86] as well as a few lines under the control of Pgst1 [72]. In an overview Aldwinckle [73] reports that some lines showed an increase of resistance in the field.…”

Section: Fire Blight Resistancementioning

confidence: 99%

Recombinant DNA Technology in Apple

Gessler

Patocchi

Green Gene Technology

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This review summarizes the achievements of almost 20 years of recombinant DNA technology applied to apple, grouping the research results into the sections: developing the technology, insect resistance, fungal disease resistance, self-incompatibility, herbicide resistance, fire blight resistance, fruit ripening, allergens, rooting ability, and acceptance and risk assessment. The diseases fire blight, caused by Erwinia amylovora, and scab, caused by Venturia inaequalis, were and still are the prime targets. Shelf life improvement and rooting ability of rootstocks are also relevant research areas. The tools to create genetically modified apples of added value to producers, consumers, and the environment are now available.

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Apple

Malnoy

Korban

Boresjza-Wysocka

et al. 2008

Compendium of Transgenic Crop Plants

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The first report of transformed apple plants in 1989 raised expectations for new apple cultivars that would be better tasting, healthier, and easier to grow. Although, many different traits have now been introduced successfully into apple, no transformed cultivars have yet made it to commercial production. Most early reports on transformed apple described “proof of concept” experiments involving the development of regeneration protocols, and the choice of appropriate promoters and selectable markers. More recently, the focus has moved onto functional testing of traits of potential commercial interest. These traits can be grouped into two categories: horticultural production traits and fruit‐focused traits. Production traits of interest include bacterial, fungal and pest resistance, dwarfing, propagation, stress resistance, precocity, storage life, and self‐fertility. Examples of fruit‐focused traits include novel health properties, flavor, reduced browning, color, and reduced allergenicity. This review will consider reports of characters introduced into apple that are useful to growers and consumers, and looks toward future trends, targets, and challenges.

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Evaluation of the HRPN Gene for Increasing Resistance to Fire Blight in Transgenic Apple

Cited by 8 publications

References 0 publications

Expression of a bacterial effector, harpin N, causes increased resistance to fire blight in Pyrus communis

Expression of a bacterial effector, harpin N, causes increased resistance to fire blight in Pyrus communis

Recombinant DNA Technology in Apple

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