External modulation of Rotimer exudate secretion in monogonant rotifers.
Ecotoxicol Environ Saf
; 220: 112399, 2021 Sep 01.
Article
en En
| MEDLINE
| ID: mdl-34091187
ABSTRACT
The Rotimer, a rotifer-specific biopolymer, is an exogenic bioactive exudate secreted by different monogonant species (e.g. Euchlanis dilatata or Lecane bulla). The production of this viscoelastic biomolecule is induced by different micro-particles, thereby forming a special Rotimer-Inductor Conglomerate (RIC) in a web format. In this case, the water insoluble Carmine crystals, filtered to size (max. diameter was 50 µm), functioned as an inductor. The RIC production is an adequate empirical indicator to follow up this filamentous biopolymer secretion experientially; moreover, this procedure is very sensitive to the environmental factors (temperature, pH, metals and possible natural pollutant agents). The above mentioned species show completely different reactions to these factors, except to the presence of calcium and to the modulating effects of different drugs. One of the novelties of this work is that the Rotimer secretion and consequently, the RIC-formation is a mutually obligatory and evolutionary calcium-dependent process in the concerned monogonants. This in vivo procedure needs calcium, both for the physiology of animals and for fiber formation, particularly in the latter case. The conglomerate covered area (%) and the detection of the longest filament (mm) of the given RIC were the generally and simultaneously applied methods in the current modulating experiments. Exploring the regulatory (e.g. calcium-dependency) and stimulating (e.g. Lucidril effect) possibilities of biopolymer secretion are the basis for optimizing the RIC-production capacities of these micro-metazoans.
Palabras clave
Ascorbic acid (PubChem CID: 54670067); Biopolymer; CaCl(2) (PubChem CID: 24844); Carmine crystals (PubChem CID: 14950); Catechin (PubChem CID: 9064); Choline chloride (PubChem CID: 6209); DMSO (PubChem CID: 679); EDTA (PubChem CID: 6049); Ethyl nicotinate (PubChem CID: 69188); Euchlanis dilatata; Exudate; Glucose (PubChem CID: 5793); Glycerol (PubChem CID: 753); Isoguvacine (PubChem CID: 3765); KCl (PubChem CID: 4873); Lecane bulla; LiCl (PubChem CID: 23681138); Meclofenoxate hydrochloride (PubChem CID: 19379); MgCl(2) (PubChem CID: 24644); Monogonant rotifer; NaCl (PubChem CID: 5234); Rotimer; Selegiline (PubChem CID: 26757); Spermidine (PubChem CID: 1102); SrCl(2) (PubChem CID: 6101868); Taurine (PubChem CID: 1123); cAMP (PubChem CID: 6076)
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Rotíferos
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Biopolímeros
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Calcio
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Ambiente
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Contaminantes Ambientales
/
Exudados y Transudados
Límite:
Animals
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Año:
2021
Tipo del documento:
Article
País de afiliación:
Hungria