105 research outputs found

    Eucalypts of Australia

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    The Ecological Effect of a Preceding Crop on Smartweed in Flax

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    Ja, men de e jo ein av oss : et dypdykk i et prosjekt om integrering av flyktninger som arbeidstakere i et sykehjem for personer med demens

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    Masteroppgave i praktisk kunnskap - Universitetet i Nordland, Bodø, 201

    Interactions of Bacillus Mojavensis and Fusarium Verticillioides With a Benzoxazolinone (Boa) and Its Transformation Product, Apo

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    En:Journal of Chemical Ecology (2007, vol. 33, n. 10, p. 1885-1897)The benzoxazolinones, specifically benzoxazolin-2(3H)-one (BOA), are important transformation products of the benzoxazinones that can serve as allelochemicals providing resistance to maize from pathogenic bacteria, fungi, and insects. However, maize pathogens such as Fusarium verticillioides are capable of detoxifying the benzoxazolinones to 2-aminophenol (AP), which is converted to the less toxic N-(2-hydroxyphenyl) malonamic acid (HPMA) and 2-acetamidophenol (HPAA). As biocontrol strategies that utilize a species of endophytic bacterium, Bacillus mojavensis, are considered efficacious as a control of this Fusarium species, the in vitro transformation and effects of BOA on growth of this bacterium was examined relative to its interaction with strains of F. verticillioides. The results showed that a red pigment was produced and accumulated only on BOA-amended media when wild type and the progeny of genetic crosses of F. verticillioides are cultured in the presence of the bacterium. The pigment was identified as 2-amino-3H-phenoxazin-3-one (APO), which is a stable product. The results indicate that the bacterium interacts with the fungus preventing the usual transformation of AP to the nontoxic HPMA, resulting in the accumulation of higher amounts of APO than when the fungus is cultured alone. APO is highly toxic to F. verticillioides and other organisms. Thus, an enhanced biocontrol is suggested by this in vitro study. =580 $aEn:Journal of Chemical Ecolog

    Introduction of Ophiobolus graminis into new polders and its decline

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    Pesky plants (revised 1969)

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    58 pages; includes photographs and drawings. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.Kommedahl, Thor; Johnson, Herbert G.. (1969). Pesky plants (revised 1969). Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/168769

    Pesky plants (revised 1972)

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    58 pages; includes photographs and drawings. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.Kommedahl, Thor; Johnson, Herbert G.. (1972). Pesky plants (revised 1972). Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/168770
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