An inordinate fondness for Fusarium: Phylogenetic diversity of fusaria cultivated by ambrosia beetles in the genus Euwallacea on avocado and other plant hosts

Kasson, Matthew T.; O’Donnell, Kerry; Rooney, Alejandro P.; Sink, Stacy; Ploetz, R. C.; Ploetz, Jill N.; Konkol, Joshua L.; Carrillo, Daniel; Freeman, Stanley; Mendel, Zvi; Smith, Jason A.; Black, Adam; Hulcr, Jiří; Bateman, Craig; Štefková, Kristýna; Campbell, Paul; Geering, Andrew D. W.; Dann, E. K.; Eskalen, Akif; Mohotti, K. M.; Short, Dylan P. G.; Aoki, Takayuki; Fenstermacher, Kristi A.; Davis, Donald D.; Geiser, David M.

doi:10.1016/j.fgb.2013.04.004

Cited by 144 publications

(180 citation statements)

References 41 publications

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“…Fusaria are frequently recovered from wood-boring beetles as common phoretic contaminants (Batra, 1963(Batra, , 1967. However, several clades in the Fusarium solani complex are also intimately associated with at least three clades of ambrosia beetles (Norris, 1979;Kasson et al, 2013). We do not know whether the common Fusarium OTU detected within the mycangia of beetles investigated here was symbiotic or phoretic and whether it is one species or several.…”

Section: Taxonomic Identity Of the Fungal Communitymentioning

confidence: 81%

“…The obligate ambrosia symbiosis is now known to have evolved at least eleven times in insects and seven times in fungi ( Van der Walt, 1972;Hulcr et al, 2007;Massoumi Alamouti et al, 2009;Kasson et al, 2013) and involved origins of many different fungus transmission organs (mycangia). Still, one of the essential characteristics of the symbiosisspecificity-remains controversial.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Taxonomic Identity Of the Fungal Communitymentioning

confidence: 81%

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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“…AF-12 (Dodge et al 2017). These other associations cause less damage than F. euwallaceae and PSHB (Kasson et al 2013) although more recent reports are that KSHB and Fusarium sp. AF-12 also cause a severe dieback disease in San Diego county and Northern Mexico (Dodge et al 2017).…”

Section: Fusarium Diebackmentioning

confidence: 97%

Exotic plant disease threats to the New Zealand avocado industry and climatic suitability: a review

Everett

Siebert²

2018

NZPP

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The avocado industry was established in New Zealand from several importations dating back to 1907. Several serious pathogens found elsewhere in the world were not imported. A literature review and internet search were conducted to determine what serious avocado pathogens are not present in New Zealand and the potential impact they could have if they established. Relevant information was summarised for six pathogens determined to be the most serious of avocado and not known to be present in New Zealand: avocado sunblotch viroid (ASBVd); Pseudocercospora purpurea (cercospora spot); Ra aelea lauricola (laurel wilt); Fusarium sp. (fusarium dieback); Phellinus noxius (brown root rot); and Sphaceloma perseae (avocado scab). Laurel wilt, brown root rot, cercospora spot and fusarium dieback could become established in New Zealand if the climate here becomes warmer but establishment of ASBVd and avocado scab (which are not restricted to hot climates) is more likely.

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“…AB2, inoculated with P2-f11 and P2-f22; A2, inoculated with P2-f11; Ct2, no inoculation Table 2. We used the sequence data of F. staphyleae and 30 FSSC strains reported by Costa et al (2016), Kasson et al (2013), O'Donnell et al (2008O'Donnell et al ( , 2015 and Zhang et al (2006), which were obtained from GenBank for multiple sequence alignment using CLUSTAL W and analysis by MEGA7 (Kumar et al 2016). The phylogenetic relationship was inferred by using the maximum likelihood method based on the Jukes-Cantor model (Jukes and Cantor 1969).…”

Section: Fungal Isolation and Identificationmentioning

confidence: 99%

“…Figure 6 shows the phylogenetic tree inferred from the nucleotide sequences of EF-1a using 29 Fusarium strains and strain A. Strain A was adjacent to Clade B of the Ambrosia Fusarium clade (AFC), known as a group of symbionts of ambrosia beetles (Kasson et al 2013;O'Donnell et al 2015), and with F. pseudensiforme strains NRRL 46517 and FRC S1834, which are members of Clade A of the AFC (Kasson et al 2013). Fungi belonging to the FSSC were not detected in the nondiscolored xylem (Table 2).…”

Section: In Trunks and Branchesmentioning

confidence: 99%

First report of Fusarium solani species complex as a causal agent of Erythrina variegata decline and death after gall formation by Quadrastichus erythrinae on Okinawa Island, Japan

et al. 2017

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An inordinate fondness for Fusarium: Phylogenetic diversity of fusaria cultivated by ambrosia beetles in the genus Euwallacea on avocado and other plant hosts

Cited by 144 publications

References 41 publications

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

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

Exotic plant disease threats to the New Zealand avocado industry and climatic suitability: a review

First report of Fusarium solani species complex as a causal agent of Erythrina variegata decline and death after gall formation by Quadrastichus erythrinae on Okinawa Island, Japan

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