Molecular Characterization of Fischerella uthpalarensis, the first subsection V cyanobiont from a tropical Azolla species containing dual nitrogenases
D. Gunawardana, B. L. D. U. Pushpakumara
This paper identifies Fischerella uthpalarensis as a minor cyanobiont in Azolla, showing dual nitrogenase genes and atypical codon usage likely due to horizontal gene transfer.