Lecophagus vermicola sp. nov., a nematophagous hyphomycete with an unusual hunting strategy

Magyar, Donát; Merényi, Zsolt; Bratek, Zoltán; Baral, Hans-Otto; Marson, Guy

doi:10.1007/s11557-016-1235-3

Cited by 7 publications

(8 citation statements)

References 25 publications

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“…Single spore isolation techniques (Goh 1999;Choi et al 1999) combined with monospore DNA extraction (Bärlocher et al 2010;Magyar et al 2016a) are found to be useful in taxonomic studies of fungi with poor or no growth on artificial media. When monospore DNA extraction is carried out, attention should be paid to the cleanness of the selected monospores: minute spores of common bark-inhabiting species, e.g.…”

Section: Discussionmentioning

confidence: 99%

Mycoceros antennatissimus gen. et sp. nov.: a mitosporic fungus capturing pollen grains

et al. 2017

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Mycoceros antennatissimus gen. et sp. nov. is described and illustrated from pollen grains deposited on the bark of Elaeagnus angustifolia and Platanus × acerifolia in Hungary. This fungus is shown to capture pollen grains by its three-dimensional shape. It clearly shows seasonality and appears to be rare. The following factors determine its ecological niche: (1) the availability of fresh Pinaceae pollen grains deposited from the air on the bark of a nearby standing angiosperm tree with (2) water-retaining spongious bark, and (3) rainy weather. Conidia are mainly dispersed by stemflow rainwater, while they hardly become airborne. Direct polymerase chain reaction (PCR) from single conidia made it possible to perform molecular phylogenetic investigation in order to clarify its taxonomic relationship within the Ascomycota.

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Section: Discussionmentioning

confidence: 99%

Mycoceros antennatissimus gen. et sp. nov.: a mitosporic fungus capturing pollen grains

et al. 2017

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“…These fungi belong to aquatic hyphomycetes and are characterized by the production of conidia (asexual spores). Conidia constitute an important stage of the life cycle for dispersion and survival in adverse environmental conditions [ 10 , 33 ].…”

Section: Discussionmentioning

confidence: 99%

“…The fungi that belong to the genus Zoophagus have been reported to feed mainly on loricated rotifers, whereas those belonging to the genus Lecophagus trap mainly bdelloid rotifers and tardigrades. Thus far, the only exception recently described is Lecophagus vermicola , which feed exclusively on nematodes [ 10 ]. All previously described species were isolated from wet habitats, such as moss, decaying plants on the banks of rivers and lakes, cyanobacterial mats, and animal feces [ 11 – 13 ], except for L. vermicola , which were isolated from bark fissures of Platanus and other trees [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…Thus far, the only exception recently described is Lecophagus vermicola , which feed exclusively on nematodes [ 10 ]. All previously described species were isolated from wet habitats, such as moss, decaying plants on the banks of rivers and lakes, cyanobacterial mats, and animal feces [ 11 – 13 ], except for L. vermicola , which were isolated from bark fissures of Platanus and other trees [ 10 ]. In our recently published manuscript [ 8 ], we described the results of experiments conducted on a Zoophagus sp.…”

Section: Introductionmentioning

confidence: 99%

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Temperature-Dependence of Predator-Prey Dynamics in Interactions Between the Predatory Fungus Lecophagus sp. and Its Prey L. inermis Rotifers

Fiałkowska

Pajdak‐Stós

2017

Microb Ecol

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Temperature is considered an important factor that influences the bottom-up and top-down control in water habitats. We examined the influence of temperature on specific predatory-prey dynamics in the following two-level trophic system: the predatory fungus Lecophagus sp. and its prey Lecane inermis rotifers, both of which originated from activated sludge obtained from a wastewater treatment plant (WWTP). The experiments investigating the ability of conidia to trap rotifers and the growth of fungal mycelium were performed in a temperature range that is similar to that in WWTPs in temperate climate. At 20 °C, 80% of the conidia trapped the prey during the first 24 h, whereas at 8 °C, no conidium was successful. The mycelium growth rate was the highest at 20 °C (r = 1.44) during the first 48 h but decreased during the following 24 h (r = 0.98), suggesting the quickest use of resources. At a medium temperature of 15 °C, the tendency was opposite, and the r value was lower during the first 48 h. At 8 °C, the growth rate was very low and remained at the same level even though numerous active rotifers were potentially available for the fungus. The temperature also influences the production of new conidia; on the 7th day, new conidia were observed in 96% of the wells at 20 °C, but no new conidia were observed at 8°C. These results show that the prey (rotifers)-predator (Lecophagus) dynamics in WWTPs is temperature-dependent, and a temperature of 8 °C is a strongly limiting factor for the fungus. Moderate temperatures ensure the most stable coexistence of the fungus and its prey, whereas the highest temperature can promote the prevalence of the predator.Electronic supplementary materialThe online version of this article (10.1007/s00248-017-1060-5) contains supplementary material, which is available to authorized users.

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“…Recently, Magyar et al (2016) widened the generic concept by including a species with sessile adhesive knobs that capture nematodes.…”

Section: Kafiaddiniamentioning

confidence: 99%

Generic names in the Orbiliaceae (Orbiliomycetes) and recommendations on which names should be protected or suppressed

Baral¹,

Weber²,

Gams³

et al. 2017

Mycol Progress

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A list of all generic names that have been connected with the Orbiliomycetes is provided. Recommendations are made as to which names should be used in accordance with the rules and the different generic concepts. There is a mismatch in the current generic concepts within Orbiliomycetes regarding the two morphs: a narrow concept is used for the asexual morphs, but a broad concept relies on the sexual morphs. As a consequence, many more generic names have been established for the asexual morphs. A number of previous generic concepts are artificial, since they were based on single characters without molecular support. In order to provide solutions for this mismatch, we present three different generic concepts within the Orbiliomycetes. A broad concept recognizes a large genus Orbilia, with which most of the listed names fall into synonymy, but could be maintained as infrageneric names. Due to the lack of data proving phylogenetic relationships, this broad concept, at present, is the most practicable and recommended one. A moderate concept subdivides Orbilia into several genera, with all nematodetrapping fungi merged in Arthrobotrys. A narrow generic concept accepts genera based on differences in trapping organs, but also subdivides the remaining groups of Orbilia into Section Editor: Roland KirschnerThe last eight authors are listed alphabetically, contributing by phylogenetic results or in advisory capacity.This article is part of the "Special Issue on ascomycete systematics in honour of Richard P. Korf who died in August 2016".Electronic supplementary material The online version of this article (doi:10.1007/s11557-017-1300-6) contains supplementary material, which is available to authorized users.

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Lecophagus vermicola sp. nov., a nematophagous hyphomycete with an unusual hunting strategy

Cited by 7 publications

References 25 publications

Mycoceros antennatissimus gen. et sp. nov.: a mitosporic fungus capturing pollen grains

Mycoceros antennatissimus gen. et sp. nov.: a mitosporic fungus capturing pollen grains

Temperature-Dependence of Predator-Prey Dynamics in Interactions Between the Predatory Fungus Lecophagus sp. and Its Prey L. inermis Rotifers

Generic names in the Orbiliaceae (Orbiliomycetes) and recommendations on which names should be protected or suppressed

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