Growth and behaviour of Armillaria mellea rhizomorphs in soil

Redfern, D. B.

doi:10.1016/s0007-1536(73)80126-3

Cited by 58 publications

(37 citation statements)

References 13 publications

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“…The cores were removed later in the year and slightly closer to the stump than the location of the trench. The depth of soil cores was 5 cm less than the depth of the trench and, as noted in other studies (MORRISON 1972;PRONOS and PATTON 1978;REDFERN 1973), the greatest concentration of rhizomorphs was in the top several cm of htter and soil. The additional, deeper soil from the trench consisted primarily of sand in which rhizomorphs were rare.…”

Section: Discussionsupporting

confidence: 75%

“…After harvests, stumps and roots are colonized, and production of new rhizomorphs is maintained until those food bases are depleted. The quantity and duration of rhizomorph production may be influenced by a number of factors, including the rate of stump and root colonization (LEACH 1939;MORRISON 1972;REDFERN 1968;RISHBETH 1972), food base size (GARRETT 1956;RISHBETH 1972), host species (MORRISON 1972;REDFERN 1973;REDFERN 1975;RISHBETH 1972), and the effects of competing decay fungi (LEACH 1939;RISHBETH 1976). With the objective of reducing rhizomorph production, suggested control measures include stump and root removal or decreasing the quantity or quality of available food base by means of chemical or biological treatments (SHAW and ROTH 1978).…”

Section: Introductionmentioning

confidence: 99%

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Quantification of Armillaria rhizomorphs in Wisconsin aspen sucker stands

Stanosz

Patton

1991

European Journal of Forest Pathology

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bstract Weights of rhizomorphs of wndttervamtd Armillaria sp. obtained using ring-trench and core soil sampling methods around aspen stumps in stands at different intervals after harvest were correlated. The core method was used to sample a second series of stands twice (at an interval of two growing seasons) at radial distances of 0.5, 1.0, and 1.5 meters from stump centers. Stands were uncut (at both samplings) or 3, 6, 9, 12, or 15 years after harvest (at the time of the initial sampHng). Rhizomorphs were obtained from less than half the cores from the uncut stand, and the quantities (weights and lengths) were relatively small from both samplings. Mean numbers of soil cores yielding rhizomorphs and the mean quantities obtained generally increased as a function of the interval after harvest (and from the first to the second sampling), except for the oldest stand.

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Quantification of Armillaria rhizomorphs in Wisconsin aspen sucker stands

Stanosz

Patton

1991

European Journal of Forest Pathology

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“…Also, A. mellea has been studied assiduously due to its symbiotic association with certain orchid plant such as Gastrodia elata (Kim et al, 2000;Kusano, 1911). The rhizomorphs of this fungus are distributed in the nearer soil surface such as the range of 2.5~10 cm and are rarely found below 30 cm in a soil profile even though roots of stumps colonized by A. mellea are present below that depth (Redfern, 1973). Morrison (1976) reported that the rhizomorph growth of A. mellea was not related with a soil type or texture but influenced by moisture contents, oxygen concentration and nutrients in soil.…”

Section: Discussionmentioning

confidence: 99%

A New Method for Cultivation of Sclerotium ofGrifola umbellata

et al. 2003

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Sclerotia of Grifola umbellata were cultivated by two methods such as burying and root inoculation methods. The sclerotia of G. umbellata produced by the burying method were 6.0~6.8 × 3.4~4.6 × 1.8~1.9 cm (Width × Length × Thickness) in size and 17.3~19.6 g in weight, respectively. Their increase rate was 1.10~1.12 times. On the other hand, the sclerotia cultivated by the root inoculation method were 18.3~31.5 × 12.5~26.4 × 3.1~3.7 cm (W × L × T) in size and 219.1~576.6 g in weight, respectively. Their growth increment was 11.18~39.77 times. The rhizomorphs of Armillaria mellea were developed with a high density under fallen leaves layer covering cultivation site, and distributed mainly between soil surface and soil depth of about 10 cm as well as colonized prominently on the inoculated wood logs. Fungal interaction between G. umbellata and A. mellea were observed mainly in the stage of white sclerotium of G. umbellata. The sclerotia of G. umbellata which were developed newly and harvested in the root inoculation method were twined with root hairs of host tree and rhizomorphs of A. mellea. The sclerotia of G. umbellata decomposing root hairs of host tree were confirmed through SEM examination. Physiochemical characteristics of soil in all cultivation sites had no significant differences. Soil pH were in the range of pH 3.98~4.40. Organic matters were the range of 17.97~23.86% and moisture contents of soil were 12.00~18.20%. Soil temperatures showed 12.9~13.8 o C in November and 22.0~23.9 o C in August, respectively. In conclusion, the root inoculation method seems to be a practical method for cultivating sclerotia of G. umbellata due to its many advantages such as simplicity of inoculation process, shortening of cultivation periods and facility of harvest.

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“…Rhizomorphs are formed mostly in the upper layer of the soil profile (A-B horizon up to 30 cm) owing to their dependence on an adequate oxygen supply (Redfern 1973;Morrison 1976;Rishbeth 1978;Singh 1981).…”

Section: Introductionmentioning

confidence: 99%

Diversity of Armillaria ostoyae in Scots pine plantations in Poland

Szewczyk¹,

Kwaśna²,

Bocianowski³

et al. 2014

Dendrobiology

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Incidence of Armillaria root disease and the population structure of associated Armillaria spp. were studied in 5-17-year-old Scots pine plantations in west-central Poland. Two infection centres (1.14-9.30 ha) in each of three forest districts (Siemianice, Zielonka and Złotów) were intensively sampled. Root collars were examined for mycelial fans, decayed wood, and rhizomorphs. Twenty two isolates of Armillaria ostoyae collected from epiphytic rhizomorphs from 20 living and two dead trees in the six infection centres were identified with somatic incompatibility group. Only one somatic incompatibility group for A. ostoyae was found. Twenty one isolates produced rhizomorphs on oak-wood discs submerged in a sand-forest soil substrate. Isolates from Siemianice formed the smallest rhizomorph networks and those from Złotów the most abundant. There were 16 different genets among 22 isolates of A. ostoyae distinguished by RAPD analysis. Genetic similarity among genets was 25.6-97.5%. The large diversity in A. ostoyae suggests that sexual reproduction may occur in nature more often than expected.

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Growth and behaviour of Armillaria mellea rhizomorphs in soil

Cited by 58 publications

References 13 publications

Quantification of Armillaria rhizomorphs in Wisconsin aspen sucker stands

Quantification of Armillaria rhizomorphs in Wisconsin aspen sucker stands

A New Method for Cultivation of Sclerotium ofGrifola umbellata

Diversity of Armillaria ostoyae in Scots pine plantations in Poland

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