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By Jeverson Frazzon, Johan Spee, Jason Christiansen, Dennis R. Dean (auth.), Andrzej Legocki, Hermann Bothe, Alfred Pühler (eds.)

Biological nitrogen fixation (BNF) - the conversion of molecular nitrogen into ammonia - is among the most crucial reactions in ecology and agriculture. it truly is played solely by means of microbes (prokaryotes) that reside in symbiosis with crops. This ebook summarizes the most recent examine in this response, the partaking microbes and the genetics of the way their correct genes will be transferred into the crops. within the mild of a extra sustainable and not more ecologically destructive agriculture, this is often turning into an more and more urgent issue.

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P. Ratet. D. Crespi. M Schultze. and A. Kondorosi. 1996. Nod factors and cytokinins induce similar cortical cell division. amyloplast deposition and MsENOD12A expression patttems in alfalfa roots. Plantl. 10:91-105. Cooper. B. R. Long. 1994. Morphogenetic rescue of Rhizobium meliloti nodulation mutants by" trans-zeatin secretion. Plant Cell. 6:215-225. Dehio. C. I. deBruijn. 1992. The early nodulin gene SrENOD2 from Sesbania rostrata is inducible by cytokinin. PlantJ. 2:117-128. Henson. E. T.

Et al. 1994. Mol. Plant-Microbe Int. 7: 364-369. , et al. 1994. J. Bactellol. 176: 620-633. Stacey, G. 1995. Microbiol. Lett. 127: 1-9. , et al. 1995 .. Plant Physiol. 108: 1587-1595. M,l,2, Y. Fang I , P. van Rhijn I , S. GaliIP, O. Shaul3, N. Atzmon3, S. Wininger3, Y. Eshead3, Y. Li1, V. To1, and Y. Kapulnik3 1 Department of Molecular, Cell and Developmental Biology and 2 Molecular Biology Institute, Univt"ZSity of California, Los Angeles, CA USA 90095-1006 3 Institute ofField and Garden Crops ARO, The Volcani Center, Bet Dagan 50-250, Israel Keywords.

Some isolates nodulate Acacia and some isolates nodulate Sesbania, which is also nodulated by Sinorhizobium saheli. It was found that the introduction of the nodD 1 gene of R. sp. , 1996). This revealed that a number of S. saheli isolates that nodulate Sesbania have a particular NF profile, similar to the A. caulinodans NF profile, with no detectable sulfated nod-dependent compounds. S. teranga isolates nodulating Sesbania have the same TLC profile. In contrast, S. teranga strains nodulating Acacia had a different TLC profIle showing the production of sulfated compounds.

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