caa a22 4500 477111386 CHVBK 20180405111610.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00009331 doi (NATIONALLICENCE)springer-10.1007/BF00009331 Exopolysaccharide-deficient mutants of Astragali rhizobia are symbiotically effective on Astragalus sinicus , an indeterminate nodulating host [Elektronische Daten] [Hancai Chen, Bei-Guo Long, Hong-Yu Song] Five exopolysaccharide-deficient mutants were isolated after rhizobial strain 107 was subjected to transposon Tn5 mutagenesis. The amount of EPS produced by the mutants was dramatically decreased to between 3% and 6% of wild-type level. All mutants carried a singel copy of Tn5. Two mutants (NA3 and NA10) were complemented by the R. meliloti exoA gene and the functionally equivalent exoD gene of Rhizobium sp. strain NGR234. Two other mutants (NA7 and NA8) were complemented by the R. meliloti exoB gene and the functionally equivalent NGR234 exoC gene. The remaining mutant (NA11) was not complemented by any exo genes of R. meliloti or Rhizobium NGR234. All mutants induced normal nitrogen-fixing nodules on Astragalus sinicus, an indeterminate nodulating host. Kluwer Academic Publishers, 1996 Astragali rhizobia nationallicence Astragalus sinicus nationallicence exopolysaccharide nationallicence symbiosis nationallicence Chen Hancai Shanghai Institute of Plant Physiology, Academia Sinica, 200032, Shanghai, China aut Long Bei-Guo Shanghai Institute of Plant Physiology, Academia Sinica, 200032, Shanghai, China aut Song Hong-Yu Shanghai Institute of Plant Physiology, Academia Sinica, 200032, Shanghai, China aut Plant and Soil Kluwer Academic Publishers 179/2(1996-02-01), 217-221 0032-079X 179:2<217 1996 179 11104 https://doi.org/10.1007/BF00009331 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00009331 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Hancai Shanghai Institute of Plant Physiology, Academia Sinica, 200032, Shanghai, China aut NATIONALLICENCE 700 1- Long Bei-Guo Shanghai Institute of Plant Physiology, Academia Sinica, 200032, Shanghai, China aut NATIONALLICENCE 700 1- Song Hong-Yu Shanghai Institute of Plant Physiology, Academia Sinica, 200032, Shanghai, China aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers 179/2(1996-02-01), 217-221 0032-079X 179:2<217 1996 179 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer