Intergeneric Hybridisation in Cichorieae, III

Phenolics from Rhagadiolus stellatus (Asteraceae, Cichorieae)

Rhagadiolus stellatus Gaertn., a Mediterranean member of the Cichorieae tribe of the Asteraceae family used as a food plant, was analyzed for its spectrum of phenolic compounds. Kaempferol 3-O-β-glucoside 1, kaempferol 3-O-β-rutinoside (nicotiflorin) 2, quercetin 3-O-β-glucoside 3, and luteolin 4 were isolated from the n-butanol layer of a methanolic extract of whole plants of Rh. stellatus of ...

A Summary of Intergeneric New World Quail Hybrids, and a New Intergeneric Hybrid Combination

In situ hybridisation in perspective.

In the introduction to this review two questions were posed: is the technology associated with ISH ready for general use, and will the method become an important investigative tool? With the exception of the demonstration of some single and low copy sequences, non-radioactive ISH is now sufficiently developed and simplified to make it a routine technique. It is also clear that ISH will continue...

Intergeneric communication in dental plaque biofilms.

Dental plaque is a complex biofilm that accretes in a series of discrete steps proceeding from a gram-positive streptococcus-rich biofilm to a structure rich in gram-negative anaerobes. This study investigated information flow between two unrelated plaque bacteria, Streptococcus cristatus and Porphyromonas gingivalis. A surface protein of S. cristatus caused repression of the P. gingivalis fimb...

Phage-mediated intergeneric transfer of toxin genes.

Because bacteriophages generally parasitize only closely related bacteria, it is assumed that phage-mediated genetic exchange occurs primarily within species. Here we report that staphylococcal pathogenenicity islands, containing superantigen genes, and other mobile elements transferred to Listeria monocytogenes at the same high frequencies as they transfer within Staphylococcus aureus. Several...