akinete


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akinete

[‚a′kī‚nēt]
(botany)
A thick-walled resting cell of unicellular and filamentous green algae.
References in periodicals archive ?
Some studies have reported reduction in growth rates or increases in akinete numbers when salinity increases above 20-30 PSU (Jones et al.
Akinetes are spherical, ellipsoidal, cylindrical, curved, intercalary, solitary or in groups of two to five, in some species adjacent to heterocytes.
Akinetes are long or short cylindrical with rounded ends or elliptical, adjacent to heterocytes or distant.
Heterocystscylindric, intercalary, 5-7 [micro]m in diameter and 7-20 [micro]m long, akinetes elongate, cylindric, solitary formed near the middle of the trichome but not adjacent to the heterocyst, 6-8 [micro]m in diameter and 20-60 [micro]m long (Fig.
Cyanobacteria are morphologically diverse and they consist of unicellular, colonial, pseudofilamentous, pseudoparenchymatous uniseriate, filamentous forms unbranched, undifferentiated, differentiated with specialized cells called heterocyst and akinetes and heterotrichous branched forms [2].
Disturbance of a waterbody may cause the stock of akinetes to germinate, starting a bloom of a very different genetic content than one deriving from a few existing cells drifting in from a population nearby.
Mature trichomes also contain spores called akinetes.
The originally undifferentiated filaments become entrapped in a cup-shaped indusium which triggers their differentiation into akinetes.
Approximately 10 Anabaena species were identified in the fresh material; however, establishing the dominant species when counting was difficult, as frequently only pieces of filaments without akinetes and heterocysts were found in the counting chamber.