1. Aziz, A. and Whitton, B.A. (1988) ‘Influence of light flux on nitrogenase activity of the deepwater rice-field cyanobacterium (blue-green alga) Gloeotrichia pisum in field and laboratory’, Microbios 53, 7–19.
2. Bautista, M.F. and Paerl, H.W. (1985) ‘Diel N2 fixation in an intertidal marine cyanobacterial mat community’, Marine Chemistry 16, 369–377.
3. Bebout, B.M., Paerl, H.W., Crocker, K.M. and Prufert, L.E. (1987) ‘Diel inter actions of oxygenic photosynthesis and N2 fixation (acetylene reduction) in a marine microbial mat community’, Applied and Environmental Microbiology 53, 2353–2362.
4. Bergman, B. (1981) ‘Glyoxylate decreases the oxygen sensitivity of nitrogenase activity and photosynthesis in the cyanobacterium Anabaena cylindrical Planta 152, 302–3
5. Bergman, B. and Carpenter, E.J. (1991) ‘Nitrogenase confined to randomly dis tributed trichomes in the marine cyanobacterium Trichodesmium’, Journal of Phycology in press.