Hautdrüsen als träger der pilzsymbiose bei ambrosiakäfern

Francke-Grosmann, H.

doi:10.1007/bf00430256

Cited by 114 publications

(75 citation statements)

References 11 publications

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“…Instead, spores were observed in a small, unlobed pouch below the scutellum ( Fig. 1), as illustrated in Anisandrus dispar by Francke-Grosmann (1956,1958 and Happ et al (1976). The scutellum curves ventrally on its anterior side, as in An.…”

Section: Mycangium Observationsmentioning

confidence: 94%

“…maiche would have a mesonotal mycangium similar to that of other Anisandrus (Francke-Grosmann 1956Happ et al 1976;Hulcr et al 2007). …”

Section: Introductionmentioning

confidence: 95%

“…The large mesonotal mycangia of Anisandrus, Cnestus, Eccoptopterus, Hadrodemius, and Xylosandrus are formed by an invagination of the intersegmental membrane between the scutellum and posterior base of the pronotum (Francke-Grosmann 1956Happ et al 1976;Stone et al 2007). Francke-Grosmann (1956,1958) noted morphological differences in the mycangia of X. germanus and Anisandrus dispar.…”

Section: Mycangiummentioning

confidence: 99%

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First report of a sexual state in an ambrosia fungus:Ambrosiella cleistominutasp. nov. associated with the ambrosia beetleAnisandrus maiche

Mayers

Harrington

Ranger

2017

Botany

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Genera of ambrosia beetles in the tribe Xyleborini with large, mesonotal mycangia host unique fungal symbionts in the genus Ambrosiella. The symbiont of a recent invasive to the USA from Asia, Anisandrus maiche Stark, had not been previously characterized. We found the mycangium anatomy of An. maiche collected in Ohio to be similar to that of Anisandrus dispar and consistently isolated a novel fungus, Ambrosiella cleistominuta sp. nov., from An. maiche mycangia and galleries. The fungus was distinguished from other named Ambrosiella by morphological characters and DNA sequences (ITS rDNA and tef-1α). The mycangial symbionts of ambrosia beetles had been assumed to be strictly asexual, but A. cleistominuta produces cleistothecious ascomata with ascospores in beetle galleries and in culture. In contrast to ascomata of other Ceratocystidaceae, the relatively small ascomata of A. cleistominuta are neckless and without ostioles. The ascospores are relatively large, and single-ascospore colonies produced ascomata and ascospores in culture, showing that A. cleistominuta is homothallic.

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Section: Mycangium Observationsmentioning

confidence: 94%

“…maiche would have a mesonotal mycangium similar to that of other Anisandrus (Francke-Grosmann 1956Happ et al 1976;Hulcr et al 2007). …”

Section: Introductionmentioning

confidence: 95%

Section: Mycangiummentioning

confidence: 99%

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First report of a sexual state in an ambrosia fungus:Ambrosiella cleistominutasp. nov. associated with the ambrosia beetleAnisandrus maiche

Mayers

Harrington

Ranger

2017

Botany

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“…Still, one of the essential characteristics of the symbiosisspecificity-remains controversial. It has been traditionally assumed that ambrosia beetles are mostly associated with a single dominant fungus (Hubbard, 1896(Hubbard, , 1897Doane and Gilliland, 1929;Leach et al, 1940;Francke-Grosmann, 1956;Batra, 1963), but an increasing number of studies suggests that some beetle species may have more than one associate (Batra, 1966;Norris, 1979;Kü hnholz, 2004;Gebhardt et al, 2004;Carrillo et al, 2014). Recent experiments using cultured ambrosia fungi suggested that sympatric communities of ambrosia beetles may actually share a large pool of fungi and that horizontal symbiont exchange may be common (Carrillo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

The ambrosia symbiosis is specific in some species and promiscuous in others: evidence from community pyrosequencing

et al. 2014

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Symbioses are increasingly seen as dynamic ecosystems with multiple associates and varying fidelity. Symbiont specificity remains elusive in one of the most ecologically successful and economically damaging eukaryotic symbioses: the ambrosia symbiosis of wood-boring beetles and fungi. We used multiplexed pyrosequencing of amplified internal transcribed spacer II (ITS2) ribosomal DNA (rDNA) libraries to document the communities of fungal associates and symbionts inside the mycangia (fungus transfer organ) of three ambrosia beetle species, Xyleborus affinis, Xyleborus ferrugineus and Xylosandrus crassiusculus. We processed 93 beetle samples from 5 locations across Florida, including reference communities. Fungal communities within mycangia included 14-20 fungus species, many more than reported by culture-based studies. We recovered previously known nutritional symbionts as members of the core community. We also detected several other fungal taxa that are equally frequent but whose function is unknown and many other transient species. The composition of fungal assemblages was significantly correlated with beetle species but not with locality. The type of mycangium appears to determine specificity: two Xyleborus with mandibular mycangia had multiple dominant associates with even abundances; Xylosandrus crassiusculus (mesonotal mycangium) communities were dominated by a single symbiont, Ambrosiella sp. Beetle mycangia also carried many fungi from the environment, including plant pathogens and endophytes. The ITS2 marker proved useful for ecological analyses, but the taxonomic resolution was limited to fungal genus or family, particularly in Ophiostomatales, which are under-represented in our amplicons as well as in public databases. This initial analysis of three beetle species suggests that each clade of ambrosia beetles and each mycangium type may support a functionally and taxonomically distinct symbiosis.

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“…Some of bark beetles transported spores in special mycetangia formed for the preservation of spores. Description of the mycetangia of some so-called ambrosia beetles has been given by several authors (FRANCKE-GROSMANN 1956, 1967FISHER et al 1953). Although the most destructive bark beetle of spruce stands Ips typographus L. is not classed as ambrosia beetle, its skeleton is rich in spores including ophiostomoid fungi and, therefore, this species is classed as semi-ambrosia beetle.…”

mentioning

confidence: 99%

Induced wound response of Norway spruce Picea abies P. Karst. after artificial inoculation by imagoes of Ips typographus

Jankovský¹,

Novotný²,

Mrkva³

2003

J. For. Sci.

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ABSTRACT:Inoculation experiments were carried out on a set of trees with imagoes of Ips typographus L. which origin from the Šumava Mts. and the Křtiny Training Enterprise. The objective of back inoculations was to determine whether species found on the surface of Ips typographus imagoes spread after the inoculation also through host tissues. It the vicinity of inoculation by Ips typographus imagoes, marked necrotic zones are evident including symptoms of the penetration of vascular pathogens through phloem and sapwood. The most marked reactions were observed in case of inoculation by an untreated Ips typographus imago. Treatment of Ips typographus imagoes by Ibefungin and Fundazol preparations did not demonstrate expected effects in full scale. The spores of several ophiostomoid fungi like Ceratocystis polonica (Siem.) C. Moreau were observed on the surface of bark beetles and at the same time were re-isolated from wounds inoculated by Ips typographus imagoes. The other fungi like Ophiostoma bicolor Davidson & Wells, Leptographium cf. lundbergii Lagerberg & Melin., Pezicula eucrita Karst., Phomopsis sp. and other were found in wounds with the imagoes artificial infection.

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Hautdrüsen als träger der pilzsymbiose bei ambrosiakäfern

Cited by 114 publications

References 11 publications

First report of a sexual state in an ambrosia fungus:Ambrosiella cleistominutasp. nov. associated with the ambrosia beetleAnisandrus maiche

First report of a sexual state in an ambrosia fungus:Ambrosiella cleistominutasp. nov. associated with the ambrosia beetleAnisandrus maiche

The ambrosia symbiosis is specific in some species and promiscuous in others: evidence from community pyrosequencing

Induced wound response of Norway spruce Picea abies P. Karst. after artificial inoculation by imagoes of Ips typographus

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