heterocyst


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heterocyst

[′hed·ə·rə‚sist]
(botany)
Clear, thick-walled cell occurring at intervals along the filament of certain blue-green algae.
References in periodicals archive ?
between nitrogen levels and heterocyst formation in Anabena spp.
N-fixation, which is performed in specialized cells called heterocysts.
There is some debate whether the presence of heterocysts means
The nitrogen-fixing ability of each leaf of Azolla, because it is a function of the heterocyst frequency of the symbiont it houses (Watanabe, 1982), varies with leaf maturity.
Singh and Singh (1989) found that the application of nitrogen reduced heterocyst frequency in Anabaena Azollae.
1], there was severe damage to fronds and significant reductions in growth, heterocyst development, and nitrogen-fixation rates.
Singh and Singh (1988) found that heterocyst frequency of Anabaena azollae and nitrogen fixation and biomass accumulation of Azolla were all higher with split applications of phosphorus than with a single application and were the least with no phosphorus application.
Symbiotic algal nitrogenase activity and heterocyst frequency in seven Azolla species after phosphorus fertilization.
Effect of nitrogen fertilizers on nitrogen fixation and heterocyst frequency of cyanobacterium Anabaena azollae in 7 species of Azolla.