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The phylogenetic relationship between the Chlamydomonadales and Chlorococcales inferred from 18SrDNA sequence data
The 185rDNA trees clearly demonstrate the non‐monophyly of the Chlamydomonadales and Chlorococcales, suggesting that vegetative morphology does not reflect phylogenetic relationships in the CW group.
The Basal Position of Scaly Green Flagellates among the Green Algae (Chlorophyta) is Revealed by Analyses of Nuclear-Encoded SSU rRNA Sequences.
These analyses provide further evidence for the basal phylogenetic position of the scaly green flagellates among the Chlorophyta and raise important questions concerning the class-level classification of the Ch chlorophyta.
Nep98p Is a Component of the Yeast Spindle Pole Body and Essential for Nuclear Division and Fusion*
Nep98p is an essential integral membrane protein of the nuclear envelope and is enriched in the spindle pole body (SPB), the sole microtubule-organizing center in yeast, suggesting the essential role of Nep98p in the organization of the normal SPB.
Vestigial chloroplasts in heterotrophic stramenopiles Pteridomonas danica and Ciliophrys infusionum (Dictyochophyceae).
The results indicated that the loss of photosynthetic ability occurred independently in P. danica and C. infusionum, the first report of the presence of a vestigial chloroplast (leucoplast) in colorless dictyochophytes.
Taxonomy and phylogeny of a new kleptoplastidal dinoflagellate, Gymnodinium myriopyrenoides sp. nov. (Gymnodiniales, Dinophyceae), and its cryptophyte symbiont.
A new kleptoplastidal dinoflagellate, Gymnodinium myriopyrenoides sp. nov., was described using light microscopy, electron microscopy and phylogengetic analysis based on partial LSU rDNA sequences.
Ultrastructure of the biflagellate gametes of Collinsiella cava (Ulvophyceae, Chlorophyta)
The ultrastructure of Collinsiella gametes is very similar to that of Mono‐stroma and other members of the Ulotrichales, Ulvophyceae, and it is concluded that the genusCollinsiella should be treated as a member of the Monostromat‐aceae.
A haptophyte bearing siliceous scales: ultrastructure and phylogenetic position of Hyalolithus neolepis gen. et sp. nov. (Prymnesiophyceae, Haptophyta).
Phylogenetic analysis using the SSU rDNA and rbcL gene sequences indicated that Hyalolithus is a member of the Prymnesiales and falls in a clade including Prymnesium, Platychrysis, and Chrysochromulina polylepis and the evolutionary implications of the presence of silicified scales in haptophytes is discussed.
Aurearenophyceae classis nova, a new class of Heterokontophyta based on a new marine unicellular alga Aurearena cruciata gen. et sp. nov. inhabiting sandy beaches.
A new heterokontophyte alga, Aurearena cruciata gen. et sp. nov., was isolated from sandy beaches in Japan. Isolates were characterized by light and electron microscopy, spectroscopy of pigment
Ultrastructure and phylogenetic relationships of the unicellular green algae Ignatius tetrasporus and Pseudocharacium americanum (Chlorophyta)
The phylogenetic relationships of two unicellular green algae, Ignatius tetrasporus Bold et MacEntee and Pseudocharacium americanum Lee et Bold were investigated by ultrastructural and molecular methods and some features resemble those of the several organisms of the Siphonocladales sensu Floyd and O’Kelly.
Identification of novel HrpXo regulons preceded by two cis-acting elements, a plant-inducible promoter box and a -10 box-like sequence, from the genome database of Xanthomonas oryzae pv. oryzae.
It is shown by base-substituted mutagenesis that both motifs are essential for the expression of the genes and are shown to be related to the HrpXo regulons.