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Plant protection and rhizosphere colonization of barley by seed inoculated herbicide degrading Burkholderia (Pseudomonas) cepacia DBO1(pRO101) in 2,4-D contaminated soil

Jacobsen, C.S. (Royal Veterinary and Agricultural Univ., Copenhagen (Denmark). Dept. of Ecology and Molecular Biology)

Plant and soil, 1997-02, Vol.189 (1), p.139-144 [Periódico revisado por pares]

Dordrecht: Springer

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Título:
Plant protection and rhizosphere colonization of barley by seed inoculated herbicide degrading Burkholderia (Pseudomonas) cepacia DBO1(pRO101) in 2,4-D contaminated soil
Autor: Jacobsen, C.S. (Royal Veterinary and Agricultural Univ., Copenhagen (Denmark). Dept. of Ecology and Molecular Biology)
Assuntos: 2,4-D ; Agronomy. Soil science and plant productions ; Bacteria ; BIODEGRADACION ; BIODEGRADATION ; Biological and medical sciences ; Biotechnology ; Chemical control ; Fundamental and applied biological sciences. Psychology ; HERBICIDAS ; HERBICIDE ; HERBICIDES ; HORDEUM VULGARE ; INOCULACION ; INOCULATION ; Microbiology ; MYCORHIZE ; MYCORRHIZAE ; Parasitic plants. Weeds ; Phytopathology. Animal pests. Plant and forest protection ; PSEUDOMONAS CEPACIA ; RHIZOSPHERE ; RIZOSFERA ; Soil and water pollution ; Soil science ; Weeds
É parte de: Plant and soil, 1997-02, Vol.189 (1), p.139-144
Notas: P34
T01
1998002073
Descrição: The 2,4-dichlorophenoxyacetic acid (2,4-D) degrading bacterium, Burkholderia cepacia (formerly Pseudomonas cepacia) DBO1(pRO101) was coated on non-sterile barley (Hordeum vulgare) seeds, which were planted in two non-sterile soils amended with varying amounts of 2,4-D herbicide. In the presence of 10 or 100 mg 2,4-D per kg soil B. cepacia DBO1(pRO101) readily colonized the root at densities up to 10^sup 7^ CFU per cm root. In soil without 2,4-D the bacterium showed weak root colonization. The seeds coated with B. cepacia DBO1(pRO101) were able to germinate and grow in soils containing 10 or 100 mg kg^sup -1^ 2,4-D, while non-coated seeds either did not germinate or quickly withered after germination. The results suggest that colonization of the plant roots by the herbicide-degrading B. cepacia DBO1(pRO101) can protect the plant by degradation of the herbicide in the rhizosphere soil. The study shows that the ability to degrade certain pesticides should be considered, when searching for potential plant growth-promoting rhizobacteria. The role of root colonization by xenobiotic degrading bacteria is further discussed in relation to bioremediation of contaminated soils.[PUBLICATION ABSTRACT]
Editor: Dordrecht: Springer
Idioma: Inglês

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Plant protection and rhizosphere colonization of barley by seed inoculated herbicide degrading Burkholderia (Pseudomonas) cepacia DBO1(pRO101) in 2,4-D contaminated soil

Jacobsen, C.S. (Royal Veterinary and Agricultural Univ., Copenhagen (Denmark). Dept. of Ecology and Molecular Biology)

Dordrecht: Springer

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