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Title:

Transgenic apple plants overexpressing the chalcone 3-hydroxylase gene of Cosmos sulphureus show increased levels of 3-hydroxyphloridzin and reduced susceptibility to apple scab and fire blight

Document type:
Zeitschriftenaufsatz
Author(s):
Hutabarat, Olly Sanny; Flachowsky, Henryk; Regos, Ionela; Miosic, Silvija; Kaufmann, Christine; Faramarzi, Shadab; Alam, Mohammed Zobayer; Gosch, Christian; Peil, Andreas; Richter, Klaus; Hanke, Magda-Viola; Treutter, Dieter; Stich, Karl; Halbwirth, Heidi
Abstract:
MAIN CONCLUSION Overexpression of chalcone-3-hydroxylase provokes increased accumulation of 3-hydroxyphloridzin in Malus . Decreased flavonoid concentrations but unchanged flavonoid class composition were observed. The increased 3-hydroxyphlorizin contents correlate well with reduced susceptibility to fire blight and scab. The involvement of dihydrochalcones in the apple defence mechanism against pathogens is discussed but unknown biosynthetic steps in their formation hamper studies on their ph...     »
Keywords:
Ascomycota/pathogenicity; Asteraceae/genetics; Disease Susceptibility; Erwinia amylovora/pathogenicity; Gene Expression Regulation, Plant; Malus/genetics/metabolism/microbiology; Mixed Function Oxygenases/genetics/metabolism; Phloretin/analogs {&} derivatives/metabolism; Plant Diseases/genetics/microbiology; Plant Proteins/genetics/metabolism; Plants, Genetically Modified; Polyphenols/genetics/metabolism
Journal title:
Planta
Year:
2016
Journal volume:
243
Journal issue:
5
Pages contribution:
1213--1224
Fulltext / DOI:
doi:10.1007/s00425-016-2475-9
Print-ISSN:
0032-0935
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