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PMID: 11607193 Published · ppublish English Journal Article

Use of a transposon with luciferase as a reporter to identify environmentally responsive genes in a cyanobacterium.

Wolk CP, Cai Y, Panoff JM

Abstract

Anabaena, a filamentous cyanobacterium, is of developmental interest because, when deprived of fixed nitrogen, it shows patterned differentiation of N2-fixing cells called heterocysts. To help elucidate its early responses to a decrease in nitrogen, we used a derivative of transposon Tn5 to generate transcriptional fusions of promoterless bacterial luciferase genes, luxAB, to the Anabaena genome. Genes that responded to removal of fixed nitrogen or to other environmental shifts by increased or decreased transcription were identified by monitoring the luminescence of colonies from transposon-generated libraries. The Tn5 derivative transposed in Anabaena at ca. 1-4 x 10(-5) per cell and permitted high-resolution mapping of its position and orientation in the genome and facile cloning of contiguous genomic DNA.

Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Wolk C P
MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48824-1312, USA.
Cai Y
Panoff J M
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
1991-06-15
Pages
5355-9
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC51871
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