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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Adams, Heterocyst 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.
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).
Some cyanobacterial genera can fix nitrogen in specialized cells called heterocysts, which form a monophyletic lineage.
if heterocysts 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.
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.