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  • 1
    Electronic Resource
    Electronic Resource
    Reduced severity of rhizoctonia solani disease on wheat seedlings associated with the presence of the earthworm aporrectodea trapezoides (lumbricidae)
    Amsterdam : Elsevier
    Soil Biology and Biochemistry 25 (1993), S. 1477-1484 
    Details
    ISSN: 0038-0717
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0038-0717(93)90002-S
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Resistance to Gaeumannomyces graminis in wheat genotypes grown in field environments and sand culture
    Amsterdam : Elsevier
    Soil Biology and Biochemistry 26 (1994), S. 719-726 
    Details
    ISSN: 0038-0717
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0038-0717(94)90264-X
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Suppression of damping-off caused by Rhizoctonia solani, and growth promotion, in bedding plants by binucleate Rhizoctonia spp
    Amsterdam : Elsevier
    Soil Biology and Biochemistry 26 (1994), S. 263-268 
    Details
    ISSN: 0038-0717
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0038-0717(94)90166-X
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Does water and phosphorus uptake limit leaf growth of Rhizoctonia-infected wheat seedlings? (1999)
    Springer
    Plant and soil 209 (1999), S. 157-166 
    Details
    ISSN: 1573-5036
    Keywords: hydraulic conductivity ; leaf growth ; phosphorus ; Rhizoctonia ; water status ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Wheat seedlings infected with a pure inoculum of the root-rotting fungus Rhizoctonia solani were grown in pots designed to fit in pressure chambers, to allow the effects of the Rhizoctonia infection on leaf growth to be studied while maintaining the leaves at elevated water status. Wheat was grown to the third leaf stage in soil inoculated with three different levels of Rhizoctonia, and the pots were then pressurised for seven days to maintain the leaf xylem at the point of bleeding (ie. the leaves were at full turgor). The reduction in leaf expansion caused by Rhizoctonia was not overcome by pressurisation, indicating that a reduced supply of water to the leaves was not responsible for reduced leaf growth. The addition of phosphorus to pots marginally deficient in P did not increase the leaf growth of Rhizoctonia-infected plants, despite increased P uptake to the leaves. These results indicate that a reduced supply of water to the leaves and a supply of phosphorus that was bordering on deficient was not the cause of the growth reduction in seedlings with Rhizoctonia infection. The nature of this reduced growth remains uncertain but may involve growth regulators produced by the fungus, or by the plant as a result of the infection process. The mechanism of these growth reductions is of interest as it may provide a key to the development of plant resistance mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004374516088
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  • 5
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    Green and brown bridges between weeds and crops reveal novel Diaporthe species in Australia (2015)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.35 (2015) p.39
    Details
    Publication Date: 2016-01-07
    Description: Diaporthe (syn. Phomopsis) species are well-known saprobes, endophytes or pathogens on a range of plants. Several species have wide host ranges and multiple species may sometimes colonise the same host species. This study describes eight novel Diaporthe species isolated from live and/or dead tissue from the broad acre crops lupin, maize, mungbean, soybean and sunflower, and associated weed species in Queensland and New South Wales, as well as the environmental weed bitou bush (Chrysanthemoides monilifera subsp. rotundata) in eastern Australia. The new taxa are differentiated on the basis of morphology and DNA sequence analyses based on the nuclear ribosomal internal transcribed spacer region, and part of the translation elongation factor-1α and ß-tubulin genes. The possible agricultural significance of live weeds and crop residues (‘green bridges’) as well as dead weeds and crop residues (‘brown bridges’) in aiding survival of the newly described Diaporthe species is discussed.
    Keywords: alternate weed hosts ; multi-locus ; Phomopsis ; phylogeny ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 6
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    Stem cankers on sunflower (Helianthus annuus) in Australia reveal a complex of pathogenic Diaporthe (Phomopsis) species (2012)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 27 no. 1, pp. 80-89
    Details
    Publication Date: 2024-01-12
    Description: The identification of Diaporthe (anamorph Phomopsis) species associated with stem canker of sunflower (Helianthus annuus) in Australia was studied using morphology, DNA sequence analysis and pathology. Phylogenetic analysis revealed three clades that did not correspond with known taxa, and these are believed to represent novel species. Diaporthe gulyae sp. nov. is described for isolates that caused a severe stem canker, specifically pale brown to dark brown, irregularly shaped lesions centred at the stem nodes with pith deterioration and midstem lodging. This pathogenicity of D. gulyae was confirmed by satisfying Koch\xe2\x80\x99s Postulates. These symptoms are almost identical to those of sunflower stem canker caused by D. helianthi that can cause yield reductions of up to 40 % in Europe and the USA, although it has not been found in Australia. We show that there has been broad misapplication of the name D. helianthi to many isolates of Diaporthe (Phomopsis) found causing, or associated with, stem cankers on sunflower. In GenBank, a number of isolates had been identified as D. helianthi, which were accommodated in several clades by molecular phylogenetic analysis. Two less damaging species, D. kochmanii sp. nov. and D. kongii sp. nov., are also described from cankers on sunflower in Australia.
    Keywords: Diaporthe gulyae ; Diaporthe kochmanii ; Diaporthe kongii ; ITS ; phylogeny ; sunflower taxonomy ; TEF-1\xce\xb1
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 7
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    Green and brown bridges between weeds and crops reveal novel Diaporthe species in Australia (2015)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 35, pp. 39-49
    Details
    Publication Date: 2024-01-12
    Description: Diaporthe (syn. Phomopsis) species are well-known saprobes, endophytes or pathogens on a range of plants. Several species have wide host ranges and multiple species may sometimes colonise the same host species. This study describes eight novel Diaporthe species isolated from live and/or dead tissue from the broad acre crops lupin, maize, mungbean, soybean and sunflower, and associated weed species in Queensland and New South Wales, as well as the environmental weed bitou bush (Chrysanthemoides monilifera subsp. rotundata) in eastern Australia. The new taxa are differentiated on the basis of morphology and DNA sequence analyses based on the nuclear ribosomal internal transcribed spacer region, and part of the translation elongation factor-1\xce\xb1 and \xc3\x9f-tubulin genes. The possible agricultural signi\xef\xac\x81cance of live weeds and crop residues (\xe2\x80\x98green bridges\xe2\x80\x99) as well as dead weeds and crop residues (\xe2\x80\x98brown bridges\xe2\x80\x99) in aiding survival of the newly described Diaporthe species is discussed.
    Keywords: alternate weed hosts ; multi-locus ; Phomopsis ; phylogeny ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
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    PAPER (OA)
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