Mutualism and asexual reproduction influence recognition genes in a fungal symbiont

Nest, Magriet A. van der; Steenkamp, Emma Theodora; Wilken, P. Markus; Stenlid, Jan; Wingfield, Michael J.; Wingfield, Brenda D.; Slippers, Bernard

doi:10.1016/j.funbio.2013.05.001

Cited by 2 publications

(3 citation statements)

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“…are shared among siricid genera and species), however, suggests that horizontal transmission occurs, at least at longer evolutionary timescales (98,107,114,115). A similar process occurs in the related woodwasp Xiphydria and its associated xylariaceous fungi, whose genotypes are exchanged frequently (82).…”

Section: Fidelity and Specificitymentioning

confidence: 99%

“…and siricids has changed dramatically in this regard. Earlier literature describes the relationship as species specific, with uniparental (female), vertical transmission of (asexual) genotypes between wasp generations (reviewed in 98,114). The fact that there is little evidence for cospeciation between siricids and Amylostereum spp.…”

Section: Fidelity and Specificitymentioning

confidence: 99%

“…This discovery made it possible to investigate the global spread of S. noctilio, as reflected by the fungal symbiont (101,103,114). Subsequent studies using vegetative compatibility groups, together with data from DNA sequences and PCR restriction fragment length polymorphisms, showed that a clone of the fungus had spread across three continents, presenting arguably the largest geographically spread single fungal individual ever recorded (Figure 1a).…”

Section: Introductionmentioning

confidence: 99%

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SirexWoodwasp: A Model for Evolving Management Paradigms of Invasive Forest Pests

Slippers

Hurley

Wingfield

2015

Annu. Rev. Entomol.

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The Sirex woodwasp, Sirex noctilio, and its fungal mutualist, Amylostereum areolatum, together constitute one of the most damaging invasive pests of pine. Despite a century of research and well-established management programs, control remains unpredictable and spread continues to new areas. Variable success in managing this pest has been influenced by complex invasion patterns, the multilayered nature of biological interactions, the varying local ecologies, and microevolutionary population processes in both the biocontrol organisms and in the wasps. Recent research findings are challenging the historical perspectives on methods to manage the Sirex woodwasp, calling for management programs to incorporate the variable local dynamics affecting this pest complex. In this regard, the Sirex woodwasp provides a superb model to illustrate the need for a different approach to develop efficient and sustainable management tools to deal with the growing and global nature of pest invasions in forests and plantations.

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Section: Fidelity and Specificitymentioning

confidence: 99%

Section: Fidelity and Specificitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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SirexWoodwasp: A Model for Evolving Management Paradigms of Invasive Forest Pests

Slippers

Hurley

Wingfield

2015

Annu. Rev. Entomol.

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Adaptations for Symbiont-Mediated External Digestion in Sirex noctilio (Hymenoptera: Siricidae)

Thompson

Bodart

McEwen

et al. 2014

Annals of the Entomological Society of America

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Wood-feeding insects face a host of physical, chemical, and nutritional barriers in their food resource. Wood-boring Hymenoptera in the family Siricidae are associated with mutualistic basidiomycete wood-rot fungi, which assist colonization and provide nutrition for their insect partner, though functional properties of this symbiosis are poorly described. In this study, we document the behavioral and morphological adaptations of the globally invasive woodwasp, Sirex noctilio F., for foraging using its fungal symbiont Amylostereum areolatum (Chaillet ex Fries) Boidin. Larvae concentrated foraging near the border of fungal symbiont growth in pine xylem. Foraging larvae do not ingest bulk xylem tissue, but rather use specialized asymmetric mandibles to press xylem shavings and extract liquid fractions. Fluids drain toward the oral cavity via a sulcus on the occlusal surface of the left mandible. Processed shavings are expelled from the oral cavity without ingestion and passed along the underside of the larvae via peristaltic undulation to the rear of the feeding gallery. Larval midguts lack elaborated chambers typical in insects reliant on microbial fermentation of cellulose, and no xylem tissue was recovered from gut dissections. Larval behavior and functional morphology indicate larval S. noctilio do not ingest xylem, but instead use the fungus as an external gut for digestion of recalcitrant lignocellulosic compounds.

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Mutualism and asexual reproduction influence recognition genes in a fungal symbiont

Cited by 2 publications

References 76 publications

SirexWoodwasp: A Model for Evolving Management Paradigms of Invasive Forest Pests

SirexWoodwasp: A Model for Evolving Management Paradigms of Invasive Forest Pests

Adaptations for Symbiont-Mediated External Digestion in Sirex noctilio (Hymenoptera: Siricidae)

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