The effect of temperature and duration of exposure of potato tuber moth (Lepidoptera: Gelechiidae) in infested tubers to the biofumigant fungus Muscodor albus

Lacey, Lawrence A.; Horton, David; Jones, Dana C.

doi:10.1016/j.jip.2007.08.004

Cited by 12 publications

(5 citation statements)

References 14 publications

(18 reference statements)

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“…Unlike pupae, larvae of R. indifferens were not susceptible to M. albus in the test regimes used in this study. In part this could be attributed to the VOCs dissipating in uncovered soil, as larvae of potato tuber moth and codling moth are susceptible to VOCs in closed systems (Lacey and Neven 2006;Lacey et al 2008Lacey et al , 2009. Also, adults of R. indifferens in nature cannot be contained for exposure to M. albus.…”

Section: Discussionmentioning

confidence: 99%

“…Five cups containing 30 g of autoclaved rye grain and 30 ml of sterile deionized water were prepared in the same manner and used for controls. Assays were conducted in 28.3-liter hermetically sealed Þberglass chambers described by Lacey et al (2008). For each of the treatment chambers, a container with hydrated M. albus formulation was uncovered and immediately placed in the chambers holding the Þve cups with pupae (ϭone replicate).…”

Section: Methodsmentioning

confidence: 99%

“…M. albus produces a mixture of volatile organic compounds (VOCs) (alcohols, esters, ketones, acids, and lipids) that are biocidal for a wide variety of organisms . These include plant pathogens, plant parasitic nematodes, human pathogenic fungi and bacteria, and various insects (Mercier and Jimé -nez 2004;Mercier and Smilanick 2005;Schnabel and Mercier 2006;Strobel 2006;Lacey and Neven 2006;Lacey et al 2008Lacey et al , 2009Riga et al 2008). However, M. albus has not been tested against any tephritid fruit ßy species.…”

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confidence: 99%

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Pupal Mortality and Adult Emergence of Western Cherry Fruit Fly (Diptera: Tephritidae) Exposed to the Fungus <I>Muscodor albus</I> (Xylariales: Xylariaceae)

Yee¹,

Lacey²,

Bishop³

2009

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Western cherry fruit fly, Rhagoletis indifferens Curran (Diptera: Tephritidae), is a major pest of sweet cherry, Prunus avium (L.) L. (Rosales: Rosaceae), that is conventionally controlled using insecticides. One alternative to the use of insecticides alone for fly control could be fumigation of the fly's overwintering habitat using the fungus Muscodor albus Worapong, Strobel & Hess (Xylariales: Xylariaceae) in conjunction with reduced insecticide use. The fungus produces a mixture of volatile organic compounds (VOCs) that are biocidal for a variety of organisms. In this study, the main objectives were to determine the effects of M. albus VOCs on mortality of R. indifferens pupae and on adult emergence under laboratory conditions. In fumigation chamber experiments, a 14-d exposure of pupae in soil to VOCs resulted in 61.9% control, and exposure to VOCs for 7, 10, and 14 d reduced fly emergence by 44.2, 70.0, and 86.3%, respectively, relative to controls. In an experiment using plastic covers to retain VOCs in treated soil, a concentration of 1% M. albus formulation (fungus + rye grain) did not affect pupal mortality and fly emergence, but a concentration of 5% M. albus formulation resulted in 27.4% control and reduced fly emergence by 30.1% relative to the control. Larvae of R. indifferens that were dropped onto soil with 1% M. albus formulation were not affected by the fungus. Results indicate that prolonged exposure and high concentrations of M. albus VOCs can cause significant mortality of R. indifferens pupae in soil and delay adult emergence.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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Pupal Mortality and Adult Emergence of Western Cherry Fruit Fly (Diptera: Tephritidae) Exposed to the Fungus <I>Muscodor albus</I> (Xylariales: Xylariaceae)

Yee¹,

Lacey²,

Bishop³

2009

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“…Additional biological control agents that are being studied in our laboratory include the use of entomopathogenic nematodes applied against larvae exiting foliage late in the season (L Lacey, unpubl.) and the endophytic fungus Muscodor albus as a biofumigant in storage (Lacey & Neven, 2006; Lacey et al., 2008).…”

Section: Discussionmentioning

confidence: 99%

Semi‐field evaluation of a granulovirus and Bacillus thuringiensis ssp. kurstaki for season‐long control of the potato tuber moth, Phthorimaea operculella

Arthurs

Lacey²,

Pruneda³

et al. 2008

Entomologia Exp Applicata

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There are few insecticidal options for potato tuber moth (PTM), Phthorimaea operculella Zeller (Lepidoptera: Gelechiidae), control late in the growing season. We evaluated the PTM granulovirus (PoGV) and Bacillus thuringiensis Berliner ssp. kurstaki (Btk) for season‐long control of PTM on potato foliage in 2006 and 2007. Compared to untreated controls, 10 weekly applications of PoGV (1013 occlusion bodies/ha) reduced PTM populations in replicated 1‐m3 field cages by 86–96% on pre‐harvest foliage and 90–97% on tubers added to cages shortly before harvest. Infection rates of 82–95% of L4 larvae by PoGV were noted within individual larval cohorts. Equivalently timed Btk treatments (1.12 kg product/ha) were significantly less effective at population suppression, with a 36–76% reduction in larvae recovered from tubers added to cages. A PoGV/Btk alternation was significantly more effective than Btk alone and as effective as PoGV in 2007, but not in 2006. There was some evidence that reduced rate PoGV treatments (10% rate or 50% application frequency) were less effective than the standard program. There were no treatment effects on percentage of tubers growing in the ground that were infested at harvest, which remained comparatively low at ≤8.1%. Bioassays were conducted to evaluate the residual activities of foliar deposits. Early‐season applications were highly effective for the first 24 h (≥93% mortality) with a steady decline in activity over 10 days. A second application, applied later in the season, showed similar patterns, although in this case Btk was less persistent than PoGV, whereas both agents provided significant larval mortality compared with controls over 14 days. Both PoGV and Btk provide alternatives to manage field infestations of PTM prior to harvest, thus reducing the risk of tuber infestations in storage.

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“…Promising results were obtained on fumigation by VOCs of M. albus different stages of the codling moth which further strengthened the case for Muscodor VOCs to be used as biofumigants to control insect pests [36]. The control of potato tuber moth (PTM) was also enhanced by the use of M. albus VOCs at low temperature apart from attack by plant pathogens [37]. Incidentally, all these studies on insect control using [38] proved that VOCs of M. albus possessed both nematicidal and nematostatic properties under greenhouse conditions.…”

Section: Role Of Muscodor Spp In Crop Protectionmentioning

confidence: 91%

Marvellous Muscodor spp.: Update on Their Biology and Applications

Saxena

Strobel

2020

Microb Ecol

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Nearly 20 years ago, the first report appeared on the discovery of a novel genus-Muscodor. This organism was isolated as an endophyte from a cinnamon tree that had been introduced to Honduras from Sri Lanka in the early part of the last century. Characteristically, the original Muscodor albus, and all of its species isolated since that time are non-spore producers and each one exudes a characteristic spectrum of volatile bioactive compounds. The majority have a whitish mycelium, which is sometimes coiling, intertwined and decorated with variously shaped structures. Presently, there are at least 22 type species known/ documented and each has been described as an endophyte from various plant families with widely varying habitats. An enormous variety of volatile organic compounds (VOCs) are produced by Muscodor spp. and some of these include esters, acids, aldehydes, ketones, aromatics, alkanes, alcohols, nitrosamides and terpenoids. The VOCs are both inhibitory and lethal to a wide variety of fungi and bacteria including some major pathogens of plants and humans. Interestingly, in almost all cases studied, no one compound by itself can mimic the bioactivity of the complete gas mixture, suggesting that the volatiles are acting in a synergistic manner and this has been tested with individual as well as the VOCs in various mixtures and concentrations. This review will discuss some of the recent findings in all aspects of this unique fungal genus whilst at the same time pointing out some of the major questions that remain about its biology, ecology and its applications in agriculture, medicine and other sectors. Most importantly, the authors provide arguments supporting the claim that Muscodor is taxonomically distinct from Induratia, a recently proposed change to its nomenclature.

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The effect of temperature and duration of exposure of potato tuber moth (Lepidoptera: Gelechiidae) in infested tubers to the biofumigant fungus Muscodor albus

Cited by 12 publications

References 14 publications

Pupal Mortality and Adult Emergence of Western Cherry Fruit Fly (Diptera: Tephritidae) Exposed to the Fungus <I>Muscodor albus</I> (Xylariales: Xylariaceae)

Pupal Mortality and Adult Emergence of Western Cherry Fruit Fly (Diptera: Tephritidae) Exposed to the Fungus <I>Muscodor albus</I> (Xylariales: Xylariaceae)

Semi‐field evaluation of a granulovirus and Bacillus thuringiensis ssp. kurstaki for season‐long control of the potato tuber moth, Phthorimaea operculella

Marvellous Muscodor spp.: Update on Their Biology and Applications

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