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24 Result(s)
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Book
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Chapter
New classification for the genus Cyanidium Geitler 1933
The taxonomic and systematic chapters (Ott and Seckbach in this volume) gave the following binomials (and where applicable their respective formae) that have been applied at various times throughout the years ...
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Chapter
A review on the taxonomic position of the algal genus Cyanidium Geitler 1933 and its ecological cohorts Galdieria Merola in Merola et al. 1981 and Cyanidioschyzon De Luca, Taddei and Varano 1978
The alga presently known as Cyanidium caldarium (Tilden 1898a) Geitler 1933 has received a great deal of attention in the last 25 years both from the more classical phycologists who are concerned with phylogeneti...
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Chapter
The natural history of Cyanidium (Geitler 1933): past and present perspectives
Cyanidium caldarium is an acid hot spring alga which resembles Chlorella in its external morphological appearance. During reproduction, this alga divides into four endospores (while other species...
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Chapter
Systematic position and phylogenetic status of Cyanidium Geitler 1933
The alga known in the literature as Cyanidium caldarium is an acido-thermophilic organism distributed ubiquitously throughout the world. This alga resembles Chlorella, is unicellular, eukaryotic and exhibits a ra...
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Chapter
Biological Aspects of the Origin of Life: Open Questions in Eukaryogenesis
The identification of the first organisms is currently not solved. However, it is agreed that the bacterial cells (Prokaryota or Monera) were the pioneering unicellular organisms. These cells were the progenit...
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Chapter and Conference Paper
Is There an Alternative Path in Eukaryogenesis?
The transition from prokaryotic to eukaryotic cells (‘Eukaryogenesis’) is still a biological mystery. The present paper revisits the question of the origin of the eukaryotic cell and suggests that the biochemi...
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Book
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Chapter
The Cyanidiophyceae: Hot Spring Acidophilic Algae
The Cyanidiaceae are exceptional organisms among the microalgal communities, these cells thrive in extreme ecological conditions (see Seckbach, 1992, 1994, 1996 and 1997). They are considered very primitive eu...
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Chapter
The Versatility of Microorganisms
Living organisms are ubiquitous; they are observed in almost every ecological niche, from the air to various habitats on land and deep in the oceans. The abiding presence of microorganisms has also a temporal ...
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Chapter and Conference Paper
From Extremophiles to Astrobiology
The 3.5 – 3.8 billion years during which Prokaryotes have lived on Earth have been sufficient time to evolve the characteristics necessary to colonize every habitat compatible with the stability of biomolecule...
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Book
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Chapter
Introduction
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Chapter
Introduction To The Extremophiles
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Book
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Chapter
What do we call life? A Brief Outlook on Life
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Chapter
Biodiversity and Extremophiles
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Book
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Chapter
Symbioses and Stress: Final comments
In this book we highlight interesting cases of symbioses, in which to certain extent stress effects have been explored. We are aware that the selections do not cover all types of symbioses in which creative in...
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Chapter
Symbioses and Stress
The “living together of unlike organisms” in symbiosis implies the confrontation of different physiological properties and ecological preferences. To be successful, organisms in association need to resolve the...
