Identification of ten Anabaena sp. genes that under aerobic conditions are required for growth on dinitrogen but not for growth on fixed nitrogen

Sigal Lechno-Yossef, Qing Fan, Elizabeth Wojciuch, C. Peter Wolk*

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Heterocysts are specialized cells required for aerobic fixation of dinitrogen by certain filamentous cyanobacteria. Numerous genes involved in the differentiation and function of heterocysts in Anabaena sp. strain PCC 7120 have been identified by mutagenizing and screening for mutants that require fixed nitrogen for growth in the presence of oxygen. We have verified that 10 Anabaena sp. genes, all1338, all1591, alr1728, all3278, all3520, all3582, all3850, all4019, alr4311, and all4388, identified initially by transposon mutagenesis, are such genes by complementing or reconstructing the original mutation and by determining whether the mutant phenotype might be due to a polar effect of the transposon. Elucidation of the roles of these genes should enhance understanding of heterocyst biology.

Original languageEnglish (US)
Pages (from-to)3482-3489
Number of pages8
JournalJournal of bacteriology
Volume193
Issue number14
DOIs
StatePublished - Jul 2011

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

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