caa a22 4500 397552602 CHVBK 20180308164754.0 cr unu---uuuuu 161202e199604 xx s 000 0 eng 10.1111/j.1574-6941.1996.tb00219.x doi (NATIONALLICENCE)oxford-10.1111/j.1574-6941.1996.tb00219.x Population dynamics of a motile and a non-motile Azospirillum lipoferum strain during rice root colonization and motility variation in the rhizosphere [Elektronische Daten] [Gladys Alexandre, Colette Jacoud, Denis Faure, René Bally] Azospirillum lipoferum 4B and non-motile A. lipoferum 4T have been simultaneously isolated from rice rhizosphere at the same frequency. A. lipoferum 4T showed stable morphological and metabolic traits which are atypical for A. lipoferum species such as lack of motility, carbohydrate metabolism and laccase activity. Inoculation experiments showed that A. lipoferum 4T, but not A. lipoferum 4B, needed rice roots to stabilize in sterile soil. Both strains were able to colonize efficiently rice roots (108 cfu g−1 fresh roots) but motile form 4B remained dominant. In spite of their phenotypical differences, A. lipoferum 4B and 4T co-existed without exclusion in sterile soil (planted or not) and rice rhizosphere. Inoculation of rice roots with A. lipoferum 4B showed that rice rhizosphere enhanced the frequency of appearance of stable non-motile forms (40%). This percentage was weaker in plantlet growth medium (4%). However, these non-motile bacteria kept the same biochemical traits than the motile parental strain 4B (carbohydrates metabolism, laccase activity). © 1996 Federation of European Microbiological Societies. All rights reserved Azospirillum lipoferum nationallicence Rice nationallicence Rhizosphere nationallicence Motility nationallicence Colonization nationallicence Alexandre Gladys Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut Jacoud Colette Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut Faure Denis Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut Bally René Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut FEMS Microbiology Ecology Blackwell Publishing Ltd 19/4(1996-04), 271-278 19:4<271 1996 19 femsec https://doi.org/10.1111/j.1574-6941.1996.tb00219.x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1111/j.1574-6941.1996.tb00219.x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alexandre Gladys Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Jacoud Colette Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Faure Denis Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Bally René Laboratoire d'Ecologie Microbienne du Sol, URA C.N.R.S.-1977, Université Claude Bernard Lyon-I 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France aut NATIONALLICENCE 773 0- FEMS Microbiology Ecology Blackwell Publishing Ltd 19/4(1996-04), 271-278 19:4<271 1996 19 femsec Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford