NDLI: CILIATE-SYMBIONT SPECIFICITY OF FRESHWATER ENDOSYMBIOTIC CHLORELLA (TREBOUXIOPHYCEAE, CHLOROPHYTA)(1).

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MESSAGE FROM THE EDITOR: PUBLICATION OF PAPERS FROM THE SYMPOSIUM 'BORROWED CHLOROPLASTS: SECONDARY ENDOSYMBIOSIS AND THE CHROMALVEOLATES'.

PSA ANNUAL MEETING 2008.

PHYLOGENOMICS AND SECONDARY PLASTIDS: A LOOK BACK AND A LOOK AHEAD(1).

ENDOSYMBIOTIC AND HORIZONTAL GENE TRANSFER IN CHROMALVEOLATES(1).

NUCLEOMORPH KARYOTYPE DIVERSITY IN THE FRESHWATER CRYPTOPHYTE GENUS CRYPTOMONAS(1).

GENOMIC INSIGHTS INTO EVOLUTIONARY RELATIONSHIPS AMONG HETEROKONT LINEAGES EMPHASIZING THE PHAEOPHYCEAE(1).

DETECTING EVOLUTIONARY TRANSFER OF GENES USING PhIGs(1).

ARIADNE'S THREAD: GUIDING A PROTEIN ACROSS FIVE MEMBRANES IN CRYPTOPHYTES(1).

MICROALGAL BIOTRANSFORMATION OF STEROIDS(1).

SHIFT FROM CHLOROPHYTES TO CYANOBACTERIA IN BENTHIC MACROALGAE ALONG A GRADIENT OF NITRATE DEPLETION(1).

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DIVERSITY AND HOST SPECIFICITY OF AZOLLA CYANOBIONTS(1).

ISOLATION OF A NON-PHAGE-LIKE LYTIC VIRUS INFECTING AUREOCOCCUS ANOPHAGEFFERENS(1).

CILIATE-SYMBIONT SPECIFICITY OF FRESHWATER ENDOSYMBIOTIC CHLORELLA (TREBOUXIOPHYCEAE, CHLOROPHYTA)(1).

ANTIFEEDING DEFENSE IN BALTIC MACROALGAE: INDUCTION BY DIRECT GRAZING VERSUS WATERBORNE CUES(1).

BICARBONATE STIMULATION OF CALCIFICATION AND PHOTOSYNTHESIS IN TWO HERMATYPIC $CORALS^{1}$

ANALYSIS OF EXPRESSED SEQUENCE TAGS FROM THE MARINE MICROALGA NANNOCHLOROPSIS OCULATA (EUSTIGMATOPHYCEAE)(1).

MOLECULAR CHARACTERIZATION OF THE LECTIN, BRYOHEALIN, INVOLVED IN PROTOPLAST REGENERATION OF THE MARINE ALGA BRYOPSIS PLUMOSA (CHLOROPHYTA)(1).

IDENTIFICATION OF GENES PREFERENTIALLY EXPRESSED DURING ASEXUAL SPORULATION IN PORPHYRA YEZOENSIS GAMETOPHYTES (BANGIALES, RHODOPHYTA)(1).

CORRELATED EVOLUTION OF GENOME SIZE AND CELL VOLUME IN DIATOMS (BACILLARIOPHYCEAE)(1).

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A UNIQUE LIFE CYCLE AND PERENNATION IN A COLORLESS CHRYSOPHYTE SPUMELLA SP.(1).

PHYLOGEOGRAPHY OF THE GENUS SPONGITES (CORALLINALES, RHODOPHYTA) FROM CHILE(1).

ASSESSING PHYLOGENETIC AFFINITIES AND SPECIES DELIMITATIONS IN KLEBSORMIDIALES (STREPTOPHYTA): NUCLEAR-ENCODED rDNA PHYLOGENIES AND ITS SECONDARY STRUCTURE MODELS IN KLEBSORMIDIUM, HORMIDIELLA, AND ENTRANSIA(1).

TWO TYPES OF AUXILIARY CELL AMPULLAE IN GRATELOUPIA (HALYMENIACEAE, RHODOPHYTA), INCLUDING G. TAIWANENSIS SP. NOV. AND G. ORIENTALIS SP. NOV. FROM TAIWAN BASED ON rbcL GENE SEQUENCE ANALYSIS AND CYSTOCARP DEVELOPMENT(1).

A MOLECULAR SYSTEMATIC APPROACH TO EXPLORE DIVERSITY WITHIN THE SELLAPHORA PUPULA SPECIES COMPLEX (BACILLARIOPHYTA)(1).

PROROCENTRUM LEVIS, A NEW BENTHIC SPECIES (DINOPHYCEAE) FROM A MANGROVE ISLAND, TWIN CAYS, BELIZE(1).

NOVEL UNARMORED DINOFLAGELLATES FROM THE TOXIGENIC FAMILY KARENIACEAE (GYMNODINIALES): FIVE NEW SPECIES OF KARLODINIUM AND ONE NEW TAKAYAMA FROM THE AUSTRALIAN SECTOR OF THE SOUTHERN OCEAN(1).

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CILIATE-SYMBIONT SPECIFICITY OF FRESHWATER ENDOSYMBIOTIC CHLORELLA (TREBOUXIOPHYCEAE, CHLOROPHYTA)(1).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Summerer, Monika Sonntag, Bettina Sommaruga, Ruben
Description	Country affiliation: Austria Author Affiliation: Summerer M ( Laboratory of Photobiology and Plankton Ecology, Institute of Ecology, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria.); Sonntag B ( Laboratory of Photobiology and Plankton Ecology, Institute of Ecology, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria.); Sommaruga R ( Laboratory of Photobiology and Plankton Ecology, Institute of Ecology, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria.)
Abstract	The nature of Chlorella symbioses in invertebrates and protists has attracted much interest, but the uncertain taxonomy of the algal partner has constrained a deeper ecological understanding of this symbiosis. We sequenced parts of the nuclear 18S rDNA, the internal transcribed spacer (ITS)-1 region, and the chloroplast 16S rDNA of several Chlorella isolated from pelagic ciliate species of different lakes, Paramecium bursaria symbionts, and free-living Chlorella to elucidate phylogenetic relationships of Chlorella-like algae and to assess their host specificity. Sequence analyses resulted in well-resolved phylogenetic trees providing strong statistical support for a homogenous 'zoochlorellae' group of different ciliate species from one lake, but clearly different Chlorella in one of those ciliate species occurring in another lake. The two Chlorella strains isolated from the same ciliate species, but from lakes having a 10-fold difference in underwater UV transparency, also presented a distinct physiological trait, such as the ability to synthesize UV-absorbing substances known as mycosporine-like amino acids (MAAs). Algal symbionts of all P. bursaria strains of different origin resolved in one clade apart from the other ciliate symbionts but split into two distinct lineages, suggesting the existence of a biogeographic pattern. Overall, our results suggest a high degree of species specificity but also hint at the importance of physiological adaptation in symbiotic Chlorella.
File Format	HTM / HTML
ISSN	00223646
Issue Number	1
Journal	Journal of Phycology
Volume Number	44
e-ISSN	15298817
Language	English
Publisher	Wiley
Publisher Date	2008-02-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Botany
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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