DNA polymorphism in morels: complete sequences of the internal transcribed spacer of genes coding for rRNA in Morchella esculenta (yellow morel) and Morchella conica (black morel)

Article Abstract:

The noncoding region of the internal transcribed spacer (ITS) of the gene coding for rRNA in black morel, Morchella conica, and yellow morel, M. esculenta, shows polymorphism. The difference in the lengths of the ITSs is due to the presence of additional amino acids between the 40th and 68th amino acids in M. esculenta. However, the 5.8S gene of both M. conica and M. esculenta are homologous.

Observations, Ribosomal RNA

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A First Assessment of Genetic Variation Among Morchella esculenta (Morel) Populations

Article Abstract:

The random amplified polymorphic DNA-polymerase chain reaction technique was used to examine clonal populations and intrapopulation structure in the morel culinary fungus. Significantly higher genetic polymorphism levels were found than previously reported, with little evidence to support an inbreeding hypothesis. Implications for life cycle research are discussed.

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Genetic Differentiation Among Populations of the Salt Marsh Beetle Pogonus littoralis (Coleoptera: Carabidae): A Comparison Between Atlantic and Mediterranean Populations

Article Abstract:

Research on allozyme polymorphisms shows that Mediterranean populations of salt marsh beetles are significantly differentiated from populations of Atlantic salt marsh beetles. Decreased genetic diversity and increased differentiation were also found among Atlantic populations that were more isolated.

Population genetics, Beetles, Isoenzymes

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