ArticleFolia microbiologica2005
Motility and survival of Euglena ignobilis as affected by different factors.
Article in Folia microbiologica, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed.
- Survival and motility of diatoms Navicula grimmei and Nitzschia palea affected by some physical and chemical factors.Folia microbiologica · 2007Article
- Growth, survival and reproduction in Chlorella vulgaris and C. variegata with respect to culture age and under different chemical factors.Folia microbiologica · 2007Article
- Motility in Oscillatoria salina as affected by different factors.Folia microbiologica · 2006Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Euglena ignobilis cells in natural puddle water of pH 7.8, when kept at 21 +/- 2 degrees C and under continuous light (intensity of approximately 30 micromol m(-2) s(-1)) in a culture chamber, decreased their speed of movement from > or = 78000 microm/min (after a 12-h cultivation), to 850-1300 microm/min after 18 h. Simultaneously initiated were changes in morphology from the usual elongated motile forms to round motile ones by curving and contraction. Water stress (2 and 4 % agarized puddle water, puddle water with 0.2-1 mol/L NaCl), temperature shock (< or = 10 degrees C, > or = 30 degrees C), darkness and low-light intensity, UV exposure (0.96-2.88 kJ/m2), pH extremes (< or = 6.5 and > or = 10), presence of 'heavy' metals (1-100 ppm Fe, Cu, Zn, Co, Ni, Hg) or organic substances in puddle water (25-1000 ppm 2,4-D, captan, urea, DDT, thiourea), all these factors rapidly (after 5 to 30 min) decreased the speed of the elongated motile form to < or = 300 microm/min, and induced all morphological changes leading to formation of round motile and round nonmotile forms. These features in the alga (i.e. sudden speed reduction and morphological changes from elongate motile to round motile form) may thus be suggested to be used in assessing water quality.
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Registered trials
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