Abstract
The cercosporin Major Facilitator Superfamily (MFS) transporter, CFP, under the control of the CaMV 35S promoter, was introduced into the Xanthi cultivar of tobacco by Agrobacterium-mediated transformation. CFP+ transgenic plants were physically indistinguishable from non-transgenic Xanthi and progressed normally through growth to seed set. Accumulation of CFP in the leaf membrane fraction of CFP+ transgenic plants was associated with decreased cercosporin phytotoxicity. Frog-eye leaf lesions on CFP+ transgenic plants infected with Cercospora nicotianae conidia were smaller but were similar in number to those on non-transgenic plants. We conclude that transgenic expression of CFP may have relevance for a disease control strategy in Cercospora-plant pathosystems where cercosporin is implicated in pathogen virulence.
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Abbreviations
- ABC:
-
adenosine triphosphate binding cassette transporter
- CaMV:
-
35S cauliflower mosaic virus 35S promoter
- CFP:
-
cercosporin facilitator protein
- FAD:
-
flavin adenine dinucleotide
- GUS:
-
β-glucuronidase gene
- MF:
-
major facilitator
- MFS:
-
major facilitator superfamily
- NT:
-
non transgenic plant
- PCR:
-
polymerase chain reaction
- PDX:
-
pyridoxine
- PR:
-
pathogenicity related
- R 0 :
-
original plant transformants
- R 1 :
-
first generation plants resulting from selfing
- T11, T17, T24, T25:
-
CFP R1 transgenic plants 11, 17, 24, 25
- UV:
-
ultraviolet
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Upchurch, R.G., Rose, M.S., Eweida, M. et al. Expression of the Cercosporin Transporter, CFP, in Tobacco reduces Frog-eye Lesion Size. Biotechnol Lett 27, 1543–1550 (2005). https://doi.org/10.1007/s10529-005-1780-3
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DOI: https://doi.org/10.1007/s10529-005-1780-3