title: Cyanobacterial heterocysts.
abstract: Many multicellular cyanobacteria produce specialized nitrogen-fixing heterocysts. During diazotrophic growth of the model organism Anabaena (Nostoc) sp. strain PCC 7120, a regulated developmental pattern of single heterocysts separated by about 10 to 20 photosynthetic vegetative cells is maintained along filaments. Heterocyst structure and metabolic activity function together to accommodate the oxygen-sensitive process of nitrogen fixation. This article focuses on recent research on heterocyst development, including morphogenesis, transport of molecules between cells in a filament, differential gene expression, and pattern formation.
authors.affiliation: Department of Biology, Texas A&M University, College Station, 77843, USA.
authors.forename: Krithika
authors.initials: K
authors.lastname: Kumar
authors.forename: Rodrigo A
authors.initials: RA
authors.lastname: Mella-Herrera
authors.forename: James W
authors.initials: JW
authors.lastname: Golden
mesh_terms: D017033:Anabaena / Q000166:cytology / Q000378:metabolism* / Q000648:ultrastructure; D001692:Biological Transport; D002473:Cell Wall / Q000378:metabolism / Q000648:ultrastructure; D009024:Morphogenesis; D009586:Nitrogen Fixation
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