Application of TaqMan Real-Time PCR for Detecting 'candidatus Arsenophonus Phytopathogenicus' Infection in Sugar Beet.
PATHOGENS(2021)
Abstract
The γ-proteobacterium 'Candidatus Arsenophonus phytopathogenicus' is assigned as the major pathogen of "Syndrome des basses richesses", a sugar beet disease characterised by a reduction in the sugar content of taproots and biomass yield. Despite the economic impact of this bacteriosis, diagnostics for this important pathogen currently rely on end-point PCR detection. Herein, we introduce a TaqMan qPCR for diagnostics of the agent targeting genes encoding a heat shock protein of the Hsp20 family and mannose-6-phosphate isomerase. Quantitation with synthetic oligonucleotides as standard showed that the developed TaqMan qPCR assays enable the detection of up to 100 target copies. A comparison between the TaqMan qPCR and end-point PCR for 'Ca. A. phytopathogenicus' detection was carried out on 78 sugar beet samples from different locations in southern Germany. The newly developed assays enable the fast, reliable and sensitive detection of 'Ca. A. phytopathogenicus' in sugar beet.
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Key words
TaqMan qPCR,‘<i>Candidatus</i> Arsenophonus phytopathogenicus’,SBR,sugar beet
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