Abstract
To facilitate molecular studies of symbiotic nitrogen fixation a procedure for rapid production of transgenic root nodules was established on the legumeLotus corniculatus (Bird'sfoot trefoil). Regeneration of transgenic plants is not required as transgenic nodules are formed onAgrobacterium rhizogenes incited roots inoculated withRhizobium. Easy identification of transformed roots is possible using a set ofA. rhizogenes acceptor strains carrying assayable marker genes such as chloramphenicol acetyltransferase (CAT), β-glucuronidase (GUS), or luciferase (LUC) under control of the cauliflower mosaic virus (CaMV) 35S promoter. Counterselection ofA. rhizogenes after infection of plants was improved using an auxotrophy marker.
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Abbreviations
- CAT:
-
chloramphenicol acetyltransferase
- GUS:
-
β-glucuronidase
- LUC:
-
luciferase
- Ri:
-
root inducing
- TL:
-
left T-DNA
- CaMV:
-
Cauliflower Mosaic Virus
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Hansen, J., Jørgensen, JE., Stougaard, J. et al. Hairy roots — a short cut to transgenic root nodules. Plant Cell Reports 8, 12–15 (1989). https://doi.org/10.1007/BF00735768
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DOI: https://doi.org/10.1007/BF00735768