Morphology, cytology and taxonomic remarks of four species ofStigeoclonium(Chaetophorales, Chlorophyceae) from Argentina
| Autor: | Karina Mariel Michetti, Patricia Ines Leonardi, Eduardo J. Cáceres |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Chaetophorales
Zoospore musculoskeletal neural and ocular physiology Plant Science Aquatic Science Biology Chaetophoraceae biology.organism_classification Agricultural and Biological Sciences (miscellaneous) Stigeoclonium Thallus Germination Botany Ultrastructure Taxonomy (biology) circulatory and respiratory physiology |
| Zdroj: | Phycological Research. 58:35-43 |
| ISSN: | 1440-1835 1322-0829 |
| DOI: | 10.1111/j.1440-1835.2009.00556.x |
| Popis: | SUMMARY Four species of Stigeoclonium from Argentina were studied by means of transmission electron microscopy and light microscopy. For species identification, we collected data related to the prostrate system and zoospore germination. We also determined the chromosome number for each species. Stigeoclonium aestivale showed a more developed erect system than the prostrate one, zoospore germination was predominantly of erect type and the chromosome number was 8. Stigeoclonium tenue presented well developed, erect and prostrate systems, zoospore germination was initially of the prostrate type and the chromosome number was 5. In Stigeoclonium variabile the prostrate system predominated over the erect one, zoospore germination was strictly of the prostrate type and the chromosome number was 3. Stigeoclonium farctum presented a more developed prostrate system than the erect one, zoospore germination was strictly of the prostrate type and the chromosome number was 8. The ontogeny of the zoospore germination was related to the final relative development of the prostrate and erect portions of adult thalli. |
| Databáze: | OpenAIRE |
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