formation in cyanobacteria, Curr.
(b) Intraoperative frozen pathology of thyroid isthmus: red arrow for heterocyst
; blue arrow for psammoma body; green arrow for papillary structure.
Boron requirement for envelope structure and function in Anabaena PCC 7119 heterocysts
Ohmori, "NrrA directly regulates expression ofhetR during heterocyst
differentiation in the cyanobacterium Anabaena sp.
Westiellopsis iyengarii, a Filaments with true branching; made of prostrate and erect systems, prostrate system multiseriate, erect system uniseriate; branches short, arising on both the sides: individual sheath around filaments absent; heterocysts
intercalary, quadrate or cylindrical, was investigated for its protein and pigment contents at a rangeof different light intensities (low, medium and high) and qualities (Blue, Green and Red).
was confirmed by re-association experiments.
Some cyanobacterial genera can fix nitrogen in specialized cells called heterocysts
, which form a monophyletic lineage.
are present only when DIN is low, then heterocyst
Richellia forms short filaments, generally with a heterocyst
(a differentiated nitrogen-fixing cell) at one end, and they are usually found as internal symbionts within larger diatom cells.
Relationship between [N.sub.2]-fixation and heterocyst
abundance and its relevance to the nitrogen budget of Lake 227.
The influence of nitrogen on heterocyst
production in blue-green algae.
Further, our P addition treatment had much lower inorganic N (owing to the 10-fold dilution of Oyster Pond water), which also may have provided conditions more favorable for heterocyst
development and N fixation, resulting in enough increase in N availability to increase phytoplankton biomass.