Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa

Apicomplexa are unicellular eukaryotes that parasitise a wide spectrum of invertebrates and vertebrates, including humans. In their hosts, they occupy a variety of niches, from extracellular cavities (intestine, coelom) to epicellular and intracellular locations, depending on the species and/or deve...

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Main Authors: Andrea Valigurová, Isabelle Florent
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Microorganisms
Subjects:
Online Access:https://www.mdpi.com/2076-2607/9/7/1430
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author Andrea Valigurová
Isabelle Florent
author_facet Andrea Valigurová
Isabelle Florent
author_sort Andrea Valigurová
collection DOAJ
description Apicomplexa are unicellular eukaryotes that parasitise a wide spectrum of invertebrates and vertebrates, including humans. In their hosts, they occupy a variety of niches, from extracellular cavities (intestine, coelom) to epicellular and intracellular locations, depending on the species and/or developmental stages. During their evolution, Apicomplexa thus developed an exceptionally wide range of unique features to reach these diversified parasitic niches and to survive there, at least long enough to ensure their own transmission or that of their progeny. This review summarises the current state of knowledge on the attachment/invasive and nutrient uptake strategies displayed by apicomplexan parasites, focusing on trophozoite stages of their so far poorly studied basal representatives, which mostly parasitise invertebrate hosts. We describe their most important morphofunctional features, and where applicable, discuss existing major similarities and/or differences in the corresponding mechanisms, incomparably better described at the molecular level in the more advanced Apicomplexa species, of medical and veterinary significance, which mainly occupy intracellular niches in vertebrate hosts.
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spelling doaj.art-d6d9cf593b7b44089d11b4c81d8f51da2023-11-22T04:25:33ZengMDPI AGMicroorganisms2076-26072021-07-0197143010.3390/microorganisms9071430Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of ApicomplexaAndrea Valigurová0Isabelle Florent1Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech RepublicParasites and Free-Living Protists (UMR7245 CNRS-MNHN, MCAM), Department “Adaptations of living organisms”, National Museum of Natural History, CEDEX 05, 75231 Paris, FranceApicomplexa are unicellular eukaryotes that parasitise a wide spectrum of invertebrates and vertebrates, including humans. In their hosts, they occupy a variety of niches, from extracellular cavities (intestine, coelom) to epicellular and intracellular locations, depending on the species and/or developmental stages. During their evolution, Apicomplexa thus developed an exceptionally wide range of unique features to reach these diversified parasitic niches and to survive there, at least long enough to ensure their own transmission or that of their progeny. This review summarises the current state of knowledge on the attachment/invasive and nutrient uptake strategies displayed by apicomplexan parasites, focusing on trophozoite stages of their so far poorly studied basal representatives, which mostly parasitise invertebrate hosts. We describe their most important morphofunctional features, and where applicable, discuss existing major similarities and/or differences in the corresponding mechanisms, incomparably better described at the molecular level in the more advanced Apicomplexa species, of medical and veterinary significance, which mainly occupy intracellular niches in vertebrate hosts.https://www.mdpi.com/2076-2607/9/7/1430apical complexattachmentepimeritefeeder organellemucronmyzocytosis
spellingShingle Andrea Valigurová
Isabelle Florent
Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa
Microorganisms
apical complex
attachment
epimerite
feeder organelle
mucron
myzocytosis
title Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa
title_full Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa
title_fullStr Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa
title_full_unstemmed Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa
title_short Nutrient Acquisition and Attachment Strategies in Basal Lineages: A Tough Nut to Crack in the Evolutionary Puzzle of Apicomplexa
title_sort nutrient acquisition and attachment strategies in basal lineages a tough nut to crack in the evolutionary puzzle of apicomplexa
topic apical complex
attachment
epimerite
feeder organelle
mucron
myzocytosis
url https://www.mdpi.com/2076-2607/9/7/1430
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