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López-Ráez, J.A., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Charnikhova, T., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Mulder, P., RIKILT, Institute of Food Safety, Bornsesteeg 45, 6708 PD Wageningen, Netherlands
Kohlen, W., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Bino, R., Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Levin, I., Institute of Plant Sciences, Volcani Center, P.O. Box 6, 50250 Bet Dagan, Israel
Bouwmeester, H., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
The consumption of natural products with potential health benefits has been continuously growing, and enhanced pigmentation is of major economic importance in fruits and vegetables. The tomato hp-2dg is an important mutant line that has been introgressed into commercial tomato cultivars marketed as lycopene rich tomatoes (LRT) because of their enhanced fruit pigmentation, attributed to higher levels of carotenoids, including lycopene. Strigolactones are signaling compounds that mediate host finding in root parasitic plants and are biosynthetically derived from carotenoids. Considering the high carotenoid content of the hp-2dg mutant we studied its susceptibility to the root parasite Orobanche. In a field experiment, the average number of Orobanche aegyptiaca plants growing on hp-2dg was surprisingly significantly reduced compared with its isogenic wild-type counterpart. In vitro assays and LC-MS/MS analysis showed that this reduction was associated with a lower production of strigolactones, which apparently renders the high-carotenoid hp-2dg mutant less susceptible to Orobanche. © 2008 American Chemical Society.
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Susceptibility of the tomato mutant high pigment-2dg (hp-2 dg) to Orobanche spp. infection
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López-Ráez, J.A., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Charnikhova, T., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Mulder, P., RIKILT, Institute of Food Safety, Bornsesteeg 45, 6708 PD Wageningen, Netherlands
Kohlen, W., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Bino, R., Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Levin, I., Institute of Plant Sciences, Volcani Center, P.O. Box 6, 50250 Bet Dagan, Israel
Bouwmeester, H., Plant Research International, P.O. Box 16, 6700 AA Wageningen, Netherlands, Laboratory for Plant Physiology, Wageningen University, Arboretumlaan 4, 6703 BD Wageningen, Netherlands
Susceptibility of the tomato mutant high pigment-2dg (hp-2 dg) to Orobanche spp. infection
The consumption of natural products with potential health benefits has been continuously growing, and enhanced pigmentation is of major economic importance in fruits and vegetables. The tomato hp-2dg is an important mutant line that has been introgressed into commercial tomato cultivars marketed as lycopene rich tomatoes (LRT) because of their enhanced fruit pigmentation, attributed to higher levels of carotenoids, including lycopene. Strigolactones are signaling compounds that mediate host finding in root parasitic plants and are biosynthetically derived from carotenoids. Considering the high carotenoid content of the hp-2dg mutant we studied its susceptibility to the root parasite Orobanche. In a field experiment, the average number of Orobanche aegyptiaca plants growing on hp-2dg was surprisingly significantly reduced compared with its isogenic wild-type counterpart. In vitro assays and LC-MS/MS analysis showed that this reduction was associated with a lower production of strigolactones, which apparently renders the high-carotenoid hp-2dg mutant less susceptible to Orobanche. © 2008 American Chemical Society.
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