How Do Cysts Know When to Hatch? The Role of Ecological Communication in Awakening Latent Life

Bracht, John R.; Ferraro, Emily M.; Bracht, Kathryn

doi:10.1007/978-3-319-32211-7_7

Cited by 3 publications

(3 citation statements)

References 114 publications

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“…Nothing is known about the transmission of I. spirale between hosts, but fecal‐oral route spread of cysts is the most likely and common way (Bracht et al. and references therein), though we cannot exclude the possibility that the flagellate originated from the diet of the gecko. Cyst formation has been observed also in H. teleskopos , a marine, free‐living relative of Iotanema (Park et al.…”

Section: Discussionmentioning

confidence: 99%

Ultrastructure and Molecular Phylogeny of Iotanema spirale gen. nov. et sp. nov., a New Lineage of Endobiotic Fornicata with Strikingly Simplified Ultrastructure

Yubuki

Zadrobílková

Čepička

2016

J Eukaryotic Microbiology

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Fornicata (Metamonada) is a group of Excavata living in low-oxygen environments and lacking conventional mitochondria. It includes free-living Carpediemonas-like organisms from marine habitats and predominantly parasitic/commensal retortamonads and diplomonads. Current modest knowledge of biodiversity of Fornicata limits our ability to draw a complete picture of the evolutionary history in this group. Here, we report the discovery of a novel fornicate, Iotanema spirale gen. nov. et sp. nov., obtained from fresh feces of the gecko Phelsuma madagascariensis. Our phylogenetic analyses of the small subunit ribosomal RNA gene demonstrate that I. spirale is closely related to the free-living, marine strain PCS and the Carpediemonas-like organism Hicanonectes teleskopos within Fornicata. Iotanema spirale exhibits several features uncommon to fornicates, such as a single flagellum, a highly reduced cytoskeletal system, and the lack of the excavate ventral groove, but shares these characters with the poorly known genus Caviomonas. Therefore, I. spirale is accommodated within the family Caviomonadidae, which represents the third known endobiotic lineage of Fornicata. This study improves our understanding of character evolution within Fornicata when placed within the molecular phylogenetic context.

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Section: Discussionmentioning

confidence: 99%

Ultrastructure and Molecular Phylogeny of Iotanema spirale gen. nov. et sp. nov., a New Lineage of Endobiotic Fornicata with Strikingly Simplified Ultrastructure

Yubuki

Zadrobílková

Čepička

2016

J Eukaryotic Microbiology

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“…There are eight classes of ciliates and six species of Tetrahymena that can form resting cysts [ 18 ]. The triggers for ciliate excystment are highly variable [ 21 ]. For T. rostrata , triggers of excystment include media containing peptone and tryptone or milk, kidney extract, mollusk mucous and changes in temperature or salinity [ 3 , 4 , 22 ].…”

Section: Discussionmentioning

confidence: 99%

“…For T. rostrata , triggers of excystment include media containing peptone and tryptone or milk, kidney extract, mollusk mucous and changes in temperature or salinity [ 3 , 4 , 22 ]. Spontaneous excystment of reproductive cysts is frequent, indicating that metabolic triggers also exist [ 4 , 21 , 22 ]. Our method of preparation of cysts results in highly efficient, synchronized encystment with almost 100% of cells encysting.…”

Section: Discussionmentioning

confidence: 99%

Infection of Slugs with Theronts of the Ciliate Protozoan, Tetrahymena rostrata

et al. 2021

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Tetrahymena rostrata is a free-living ciliated protozoan and is a facultative parasite of some species of terrestrial mollusks. It is a potential biopesticide of pest slugs, such as the grey field slug, which cause considerable damage to crops. T. rostrata has several developmental forms. Homogeneous preparations of the feeding stage cells (trophonts) and excysted stage cells (theronts) were compared for their ability to infect and kill Deroceras reticulatum slugs. Theronts were more effective and remained viable and infective, even after prolonged starvation.

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Human intestinal parasitic infection: a narrative review on global prevalence and epidemiological insights on preventive, therapeutic and diagnostic strategies for future perspectives

Wong

Ong

Khoo

et al. 2020

Expert Review of Gastroenterology & Hepatology

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How Do Cysts Know When to Hatch? The Role of Ecological Communication in Awakening Latent Life

Cited by 3 publications

References 114 publications

Ultrastructure and Molecular Phylogeny of Iotanema spirale gen. nov. et sp. nov., a New Lineage of Endobiotic Fornicata with Strikingly Simplified Ultrastructure

Ultrastructure and Molecular Phylogeny of Iotanema spirale gen. nov. et sp. nov., a New Lineage of Endobiotic Fornicata with Strikingly Simplified Ultrastructure

Infection of Slugs with Theronts of the Ciliate Protozoan, Tetrahymena rostrata

Human intestinal parasitic infection: a narrative review on global prevalence and epidemiological insights on preventive, therapeutic and diagnostic strategies for future perspectives

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