Establishment of a functional symbiosis between the cyanobacterium Nostoc punctiforme and the bryophyte Anthoceros punctatus requires genes involved in nitrogen control and initiation of heterocyst differentiation.

Abstract excerpt

Three mutant strains (ntcA, hetR, hetF) of the cyanobacterium Nostoc punctiforme unable to differentiate heterocysts were characterized and examined for their ability to form a symbiotic association with the bryophyte Anthoceros punctatus. Previously unknown characteristics of the N. punctiforme hetR mutant include differentiation of chilling-resistant akinetes, while vegetative cells of the ntcA mutant randomly...

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