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Preservation of Nostocacean Hormogone Motility in Desiccated Calcium Carbonate Agar Patches by N. Lazaroff is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract Filamentous nitrogen fixing cyanobacteria are resistant to desiccation, nutrient depletion, adverse temperature and challenging photic environments. This is generally thought to account for their role as pioneering forms of life on denuded strata. It has also lent credence to the possibility that cyanobacteria with prolonged viability may have been able to survive conditions of interplanetary space to implement a panspermian hypothesis for the origin of life on earth. Prolonged retention of viability had been noted in our collection of myxotrophically grown strains of nostocaceans cultured in liquid or solid media containing calcium carbonate. Such media permitted satisfactory recovery and regrowth after storage at low light intensities for 2 years or more. Moreover, even the oldest calcium carbonate cultures contained motile hormogonia when observed microscopically. This phenomenon can be used to advantage in sending cultures to other laboratories. Not only are organisms maintained during passage through the postal system but since the cultures formed hormogonia readily, it was possible to produce preservable homogeneous agar lawns that generated hormogonia as needed f

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Author

N. Lazaroff

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0022-3646)

Published

2002

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)