Bibological control and ecology of Armillaria mellea (vahl) fr

Leach, R.

doi:10.1016/s0007-1536(39)80007-9

Cited by 48 publications

(21 citation statements)

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“…Even this expensive and aggressive approach resulted in only partial reduction of Armillaria root disease. The findings of Roth et al (2000) parallel those of Leach (1939) from many decades earlier.…”

Section: Introductionmentioning

confidence: 66%

“…The only treatment for Armillaria root disease that is commonly used operationally in British Columbia is to remove the roots of harvested trees by various means, to prevent these roots from acting as a reservoir of Armillaria inoculum that could infect regenerating stands. Lack of effectiveness of these types of treatments has been reported (Leach 1939;Reaves et al 1993). Roth et al (2000) reported that the only root removal treatment (of several tried) that "expressed consistently less mortality than the other treatments" involved trees pushed out, roots removed by machine, and then roots picked out by hand.…”

Section: Introductionmentioning

confidence: 99%

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Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Chapman¹,

Xiao²,

Myers³

2004

Can. J. Bot.

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Armillaria ostoyae (Romagn.) Herink. causes serious damage to forest tree species worldwide. In this study, Hypholoma fasciculare (Huds. ex Fr.) Kummer was inoculated, after logging, into areas in south-central British Columbia that had been identified as having high levels of A. ostoyae. Hypholoma fasciculare was successfully established in a variety of different types of trials, as indicated by growth of H. fasciculare mycelium into roots of inoculated stumps and the presence of fruiting bodies on and around stumps. Three to five years after treatment, inoculated plots had biologically and statistically significantly lower levels of mortality attributable to A. ostoyae.Résumé : L'Armillaria ostoyae (Romagn.) Herink. cause de sérieux dommages chez plusieurs essences forestières, un peu partout au monde. L'auteur a inoculé l'Hypholoma fasciculare (Huds. ex Fr.) Kummer., après la récolte forestière, dans des régions du centre-sud de la Colombie-Brittanique où on observe de fortes densités de l'A. ostoyae. Le mycé-lium de l'H. fasciculare a été introduit avec succès suite à un ensemble de différents types d'essais, tel que révélé par la croissance de l'H. fasciculare dans les racines des souches inoculées et la présence de basidiomes sur et autour des souches. De 3 à 5 ans après le traitement, les parcelles inoculées montrent un degré significativement moindre de mortalité attribuable à l'A. ostoyae, au plan statistique aussi bien que biologique.Mots clés : Hypholoma fasciculare, armillaire, maîtrise biologique, débris ligneux.[Traduit par la Rédaction] Chapman et al. 969

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Section: Introductionmentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Chapman¹,

Xiao²,

Myers³

2004

Can. J. Bot.

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“…Even a root 0.5 cm in diameter was capable of reinitiating infection, and they concluded "the dynamics of root disease development in managed stands on infested sites are similar to those in preceding natural stands, even where extensive inoculum removal operations have been conducted." Leach (1939) reported that "It is disconcerting to find that bad patches of root disease due to Armillaria may still appear even when the removal of stumps is carried out up to the economic limit. "…”

Section: Introductionmentioning

confidence: 99%

Inoculation of stumps with Hypholoma fasciculare as a possible means to control armillaria root disease

Chapman¹,

Xiao²

2000

Can. J. Bot.

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Hypholoma fasciculare (Huds. ex Fr.) Kummer was paired with Armillaria ostoyae (Romagn.) Herink in a variety of ways in the laboratory and then it was inoculated onto A. ostoyae infected stumps in the field. The ability of H. fasciuclare colonies to overrun A. ostoyae colonies in culture was confirmed. Hypholoma fasciculare fully colonized discs of tree roots where A. ostoyae was well established, and prevented A. ostoyae from occupying root segments when both fungi were introduced simultaneously. A simple method for inoculating H. fasciculare into stumps is described, and data supporting successful field inoculations are presented. The ability of H. fasciculare to invade freshly killed stumps, even those occupied by Armillaria, is demonstrated, and it is speculated that the ability of this saprophyte to invade fresh stumps is dependent upon its inoculum potential.

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“…Interest in the genus Armillaria in Africa was originally stimulated by the pioneering works of Leach (1937Leach ( , 1939 in Malawi, and Wallace (1935) in East Africa. According to Wallace (1935), Armillaria was a common saprophyte which could co-exist with plants without causing harm and caused diseases only as a secondary pathogen.…”

Section: Introductionmentioning

confidence: 99%

The use of pectic enzymes in the characterization of Armillaria isolates from Africa

Mwenje

Ride

1997

Plant Pathology

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Isozyme analysis has been used to compare 26 tropical African and 26 European Armillaria isolates from a wide range of geographic regions and host plants. Pectic enzymes from culture filtrates, especially pectin lyase (PL) and pectin methylesterase (PME), were particularly useful in grouping the isolates. Isolates from Africa previously classified as either A. heimii or A. mellea were compared with three Zimbabwean groups, previously distinguished by their morphological and biochemical properties. Group I isolates from Zimbabwe resembled A. heimii isolates, while groups II and III from Zimbabwe, and A. mellea from Kenya, formed distinct groups. The African A. mellea group was absent from isolates collected in Zimbabwe. Five European Armillaria species (A. tabescensA. melleaA. gallicaA. ostoyaeA. cepistipes) also showed species‐specific pectic enzyme patterns. Thirteen isolates of A. mellea sensu stricto collected from four European countries showed almost identical PL and PME patterns, but these patterns were quite distinct from those of isolates from Africa previously referred to as A. mellea, indicating that this species is not identical to A. mellea sensu stricto. These observations confirm the potential use of pectic enzymes in grouping Armillaria species.

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Bibological control and ecology of Armillaria mellea (vahl) fr

Cited by 48 publications

References 2 publications

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Inoculation of stumps with Hypholoma fasciculare as a possible means to control armillaria root disease

The use of pectic enzymes in the characterization of Armillaria isolates from Africa

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