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Djordjevic MA, Schofield PR, Ridge RW, et al. Rhizobium nodulation genes involved in root hair curling (Hac) are functionally conserved. Plant Mol Biol. 1985;4(2):147-60doi: 10.1007/BF02418762.
Djordjevic, M. A., Schofield, P. R., Ridge, R. W., Morrison, N. A., Bassam, B. J., Plazinski, J., Watson, J. M., & Rolfe, B. G. (1985). Rhizobium nodulation genes involved in root hair curling (Hac) are functionally conserved. Plant molecular biology, 4(2), 147-60. https://doi.org/10.1007/BF02418762
Djordjevic, M A, et al. "Rhizobium nodulation genes involved in root hair curling (Hac) are functionally conserved." Plant molecular biology vol. 4,2 (1985): 147-60. doi: https://doi.org/10.1007/BF02418762
Djordjevic MA, Schofield PR, Ridge RW, Morrison NA, Bassam BJ, Plazinski J, Watson JM, Rolfe BG. Rhizobium nodulation genes involved in root hair curling (Hac) are functionally conserved. Plant Mol Biol. 1985 Mar;4(2):147-60. doi: 10.1007/BF02418762. PMID: 24310752.
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Plant Mol Biol. 1985 Mar;4(2):147-60. doi: 10.1007/BF02418762.

Rhizobium nodulation genes involved in root hair curling (Hac) are functionally conserved.

Plant molecular biology

M A Djordjevic, P R Schofield, R W Ridge, N A Morrison, B J Bassam, J Plazinski, J M Watson, B G Rolfe

Affiliations

  1. Department of Genetics, Research School of Biological Sciences, Australian National University, P.O. Box 475, 2601, Canberra City, Australia.

PMID: 24310752 DOI: 10.1007/BF02418762

Abstract

Five specific transposon-induced nodulation defective (Nod(-)) mutants from different fast-growing species ofRhizobium were used as the recipients for the transfer of each of several endogenous Sym(biosis) plasmids or for recombinant plasmids that encode early nodulation and host-specificity functions. The Nod(-) mutants were derived fromR. trifolii, R. meliloti and from a broad-host-rangeRhizobium strain which is able to nodulate both cowpea (tropical) legumes and the non-legumeParasponia. These mutants had several common features (a), they were Nod(-) on all their known plant hosts, (b), they could not induce root hair curling (Hac(-)) and (c), the mutations were all located on the endogenous Sym-plasmid of the respective strain. Transfer to these mutants of Sym plasmids (or recombinant plasmids) encoding heterologous information for clover nodulation (pBR1AN, pRt032, pRt038), for pea nodulation (pJB5JI, pRL1JI::Tn1831), for lucerne nodulation (pRmSL26), or for the nodulation of both tropical legumes and non-legumes (pNM4AN), was able to restore root hair curling capacity and in most cases, nodulation capacity of the original plant host(s). This demonstrated a functional conservation of at least some genes involved in root hair curling. Positive hybridization between Nod DNA sequences fromR. trifolii and from a broad-host-rangeRhizobium strain (ANU240) was obtained to other fast-growingRhizobium strains. These results indicate that at least some of the early nodulation functions are common in a broad spectrum ofRhizobium strains.

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