Curva de sobrevivência à luz ultravioleta do Azospirlllum brasilense (BEIJERIWCK, 1925)
DOI:
https://doi.org/10.5433/1679-0383.1982v3n10p103Abstract
Study of Azospirillum brasilense, a bacterium that acts to fix nitrogen in gramineous plants, with the aim of aiding genetic-studies concerned with A. brasilense by means of determining the survival curve for the microorganism exposed to ultraviolet light. A time span of one minute of exposure to radiation was established, and a 5% rate of survival was obtained, representing a recommendable dosage for the induction of mutations, provided that the DNA of the bacteria be sufficiently exposed to the mutagenic agent without, however, drastically reducing the irradiated population, as a radical reduction would cause the frequency of mutants after treatment to become very low.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Semina: Ciências Sociais e Humanas adopts the CC-BY-NC license for its publications, the copyright being held by the author, in cases of republication we recommend that authors indicate first publication in this journal.
This license allows you to copy and redistribute the material in any medium or format, remix, transform and develop the material, as long as it is not for commercial purposes. And due credit must be given to the creator.
The opinions expressed by the authors of the articles are their sole responsibility.
The magazine reserves the right to make normative, orthographic and grammatical changes to the originals in order to maintain the cultured standard of the language and the credibility of the vehicle. However, it will respect the writing style of the authors. Changes, corrections or suggestions of a conceptual nature will be sent to the authors when necessary.