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Titolo:
Colonization behaviour of two enterobacterial strains on cereals
Autore:
Remus, R; Ruppel, S; Jacob, HJ; Hecht-Buchholz, C; Merbach, W;
Indirizzi:
Univ Halle Wittenberg, Inst Plant Nutr & Soil Sci, D-06108 Halle, Germany Univ Halle Wittenberg Halle Germany D-06108 Sci, D-06108 Halle, Germany Humboldt Univ, Dept Plant Nutr, D-14195 Berlin, Germany Humboldt Univ Berlin Germany D-14195 Plant Nutr, D-14195 Berlin, Germany Inst Vegetable & Ornamental Crop Prod Grossbeeren, D-14979 Grossbeeren, Germany Inst Vegetable & Ornamental Crop Prod Grossbeeren Grossbeeren Germany D-14979 Ctr Agr Landscape & Land Use Res ZALF, Inst Rhizosphere Res & Plant Nutr, D-15374 Muncheberg, Germany Ctr Agr Landscape & Land Use Res ZALF Muncheberg Germany D-15374 Germany
Titolo Testata:
BIOLOGY AND FERTILITY OF SOILS
fascicolo: 5-6, volume: 30, anno: 2000,
pagine: 550 - 557
SICI:
0178-2762(200003)30:5-6<550:CBOTES>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
PANTOEA-AGGLOMERANS; LOGNORMAL-DISTRIBUTION; BACTERIAL-POPULATIONS; RHIZOSPHERE; WHEAT; FIXATION; ELISA;
Keywords:
bacteria-plant interaction; Pantoea agglomerans; Klebsiella pneumoniae; double antibody sandwich enzyme linked immunosorbent assay; population densities;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Merbach, W Univ Halle Wittenberg, Inst Plant Nutr & Soil Sci, Adam Kuckhoff Str 17B, D-06108 Halle, Germany Univ Halle Wittenberg Adam Kuckhoff Str 17B Halle Germany D-06108
Citazione:
R. Remus et al., "Colonization behaviour of two enterobacterial strains on cereals", BIOL FERT S, 30(5-6), 2000, pp. 550-557

Abstract

Two diazotrophic enterobacterial strains, Pantoea agglomerans D5/23 and Klebsiella pneumoniae CC12/12, were observed in sterile and non-sterile hydroponic and soil experiments in order to determine, by means of an immunological detection method (double antibody sandwich enzyme linked immunosorbent assay), their colonization sites, their migration within individuals of different plant species, and their ability to compete with indigenous organisms. To investigate the interaction between bacteria and plants, root and shoot samples were analysed using electron microscopy. Field experiments were performed to determine the growth-promoting abilities of the bacterial strains. In field experiments, inoculation with P. agglomerans led to an increase in the grain yield of different wheat (Triticum aestivum) cultivars. Thesame strain was also able to colonize the rhizosphere and the phyllosphereof different cereals due to its ability to migrate within the plant. Rootsand media were colonized 10-100 times more intensively than shoots, with about 10(6) cells g(-1) root and 10(4) cells g(-1) shoot, We found that P. agglomerans colonized the root and plant-growth medium of wheat to a greaterextent than those of rye (Secale cereale) and barley (Hordeum vulgare), whereas the colonization of shoots was higher in rye and barley compared to wheat. Furthermore, while cell numbers of K, pneumoniae in media and roots were 10 times higher than cell numbers of P. agglomerans, only the latter markedly increased root growth. We were able to detect significant differences in colonization numbers between treatments even if the data were not, normally or log-normally distributed or the variances were not homogenous.

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Documento generato il 24/09/20 alle ore 23:15:59