Characteristics of the perforating agent of chlamydospores ofThielavlopsis basicola (Berk. &amp; Br.) ferraris

Clough, K.S.; Patrick, Z. A.

doi:10.1016/0038-0717(76)90088-2

Cited by 11 publications

(2 citation statements)

References 20 publications

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“…Fungivory by soil amoebae has been documented for more than 50 years. However, the first reports were still a mystery: Old (1967) observed peculiar, round perforations in the walls of fungal spores which had been incubated in natural soils, but the true nature of the "perforating agent" remained unknown for several years (Old and Wong, 1976;Clough and Patrick, 1976). Finally, Old (1977) and shortly afterward Anderson and Patrick (1980) provided evidence that the perforations were caused by giant terrestrial amoebae.…”

Section: Mechanisms Of Fungivory In Amoebaementioning

confidence: 99%

Fungivorous protists in the rhizosphere ofArabidopsis thaliana– Diversity, functions, and publicly available cultures for experimental exploration

Estermann,

Pereira Bassiaridis,

Loos

et al. 2023

Preprint

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In the context of the soil food web, the transfer of plant-fixed energy and carbon to higher trophic levels has traditionally been attributed to two main energy channels: the fungal energy channel and the bacterial energy channel. Historically, protists were overlooked in the fungal energy channel, which was believed to be controlled by fungivorous microarthropods and nematodes. In this study, we investigated fungivorous protists in the rhizosphere of Arabidopsis thaliana. Our findings revealed a notable abundance and diversity of protists that have developed specialized strategies to overcome the protective cell wall of fungi. Among the identified species were two Vampyrellida (Rhizaria) species, namely Theratromyxa weberi and Platyreta germanica, as well as one Arcellinida (Amoebozoa) species, called Cryptodifflugia oviformis. While T. weberi typically consumed entire fungal cells, the other two species perforated fungal cell walls and extracted the cellular contents. We elucidate the feeding strategies and dietary ranges of the amoebae, highlighting the non-uniform nature of fungivory in protists, as different taxa have evolved distinct approaches to access fungi as a food source. Moreover, we provide publicly available cultures of these protists to facilitate further experimental investigations within the research community.

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Section: Mechanisms Of Fungivory In Amoebaementioning

confidence: 99%

Fungivorous protists in the rhizosphere ofArabidopsis thaliana– Diversity, functions, and publicly available cultures for experimental exploration

Estermann,

Pereira Bassiaridis,

Loos

et al. 2023

Preprint

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“…The latter include helically lobed bacteria (Old and Bobertson, 1970;Old and Wong, 1972) and motile coccoid form (Clough and Patrick, 1976b. These, however, did not form clusters of cocci on parasitized conidia and hyphae.…”

Section: Parasitesmentioning

confidence: 99%

Biological destruction of conidia ofVerticillium biguttatum

Jager¹,

Velvis²

1996

Eur J Plant Pathol

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Because biological control ofRhizoctonia solani in potato with conidial suspensions of the mycoparasite Verticillium biguttatum was often less successful in sandy soils than in loamy soils, we examined soils of potato fields for the presence of organisms destructive to conidia of V. biguttatum.Representatives of conidiophagous testate amoebae were frequently present on sclerotium disks of R. solani infected with V. biguttatum in all soils studied and were most active under moist conditions. Conidiophagous naked amoebae were also numerous, except for two loam soils, and were not sensitive to moist conditions. Conidiophagous ciliates were found in rather low numbers and were most frequently isolated from coarsely structured soils under moist conditions. Conidiophagous flagellates were very infrequently observed.A bacterial type, parasitizing and killing conidia and hyphae of V. biguttatum, was observed in all soils studied. It produced clusters of cocci fixed to the outside of conidia and hyphae and was most active under moist soil conditions.The possible role of protozoan predators and bacterial parasites in the biological control of R. solani in potato with V. biguttatum applied at planting is discussed.

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