Flavor and odour characteristics of species of <i>Allium</i> in relation to their capacity to stimulate germination of sclerotia of <i>Sclerotium cepivorum</i>

Esler, G.; Coley‐Smith, J. R.

doi:10.1111/j.1365-3059.1983.tb01296.x

Cited by 36 publications

(13 citation statements)

References 18 publications

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“…Infection of susceptible host tissue follows host specific, myceliogenic germination of sclerotia present in the soil. Many studies have heen made on the nature of sclerotial germination and the factors that stimulate it (ESLER andCOLEY-SMITH 1983, COLEY-SMITH 1986). There are also extensive reports in the literature on the epidemiology of the disease (RYAN andKAVANAGH 1977, CROWE andHALL 1980) and methods of disease control {UTKHEDE andRAHE 1979 a, ENTWISTLE andMuNASiNGHE 1981).…”

mentioning

confidence: 99%

The Development of Infection Structures of Sderotium cepivorum on Onion

Stewart¹,

Backhouse²,

Sutherland³

et al. 1989

Journal of Phytopathology

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Growth of Sderotium cepivorum mycelium on root tissue differed from that on stem tissue. Hyphae grew along the lines of the longitudinal epidermal cell walls often producing side branches which resulted in a distinctive pattern of growth. Penetration occurred mainly between anticlinal wall junctions with occasional direct penetration through the periclinal wall. Growth on the surface of the stem resulted in the formatíon of donne shaped infection cushions, arising from repeated dichotomous branching of hyphal tips. Penetration of the stem tissue occurred solely from these structures. The results of experiments using artificial membranes and surface replicas indicated that the stimulus for attempted penetration was chemical in nature but that the nature of the infection structure produced was determined by the relative strength of the tissue under attack.

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mentioning

confidence: 99%

The Development of Infection Structures of Sderotium cepivorum on Onion

Stewart¹,

Backhouse²,

Sutherland³

et al. 1989

Journal of Phytopathology

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“…Firstly, for plant infection to occur, the sclerotia held in check by soil fungistasis have to receive a stimulus from specific factors released as exudates by the roots of onions (Esler and Coley-Smith, 1983). When this occurs, sclerotia germinate and produce hyphae, which may grow 1-2 cm through the soil to infect the roots of onions; plant-to-plant spread of infection may occur in densely sown or closely spaced crops.…”

Section: (B) Epidemiologymentioning

confidence: 99%

Onion diseases

Maude¹

1998

The Epidemiology of Plant Diseases

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“…S. gladioli and 5. minor were produced in pure cultures in mixtures of maizemeal with sand (Coley- Smith & Javed. 1970) or of maizemeal with perlite (Esler & Coley-Smith. 1983).…”

Section: Production Of Sclerotiamentioning

confidence: 99%

Long‐term survival of sclerotia of Sclerotium cepivorum and Stromatinia gladioli

1990

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In an experiment with pure‐culture sclerotia of Sclerotium cepivorum and Stromatinia gladioli a large proportion of the sclerotia survived burial for 20 years in the field in the absence of host plants. Some evidence for metabolic activity or leakage leading to the gradual erosion of the sclerotial contents was obtained with S. cepivorum. The results of other experiments suggested that, for unknown reasons, a variable proportion of sclerotia formed naturally on infected plants may decay shortly after their formation, but those which survive beyond this limited period are likely to remain viable for many years. The viability of sclerotia was also reduced by prolonged flooding, but the period for which land would have to be under water excludes this as a method of eliminating sclerotia from infested land in the UK. Treatment with the mycoparasite Teratosperma oligocladum did not affect the survival or infectivity of sclerotia of S. cepivorum or S. gladioli.

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Flavor and odour characteristics of species of Allium in relation to their capacity to stimulate germination of sclerotia of Sclerotium cepivorum

Cited by 36 publications

References 18 publications

The Development of Infection Structures of Sderotium cepivorum on Onion

The Development of Infection Structures of Sderotium cepivorum on Onion

Onion diseases

Long‐term survival of sclerotia of Sclerotium cepivorum and Stromatinia gladioli

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