Akinete

An akinete is a thick-walled dormant cell derived from the enlargement of a vegetative cell. [Moore, R. et al. (1998) "Botany." 2nd Ed. WCB/McGraw Hill. ISBN 0-697-28623] It serves as a survival structure. It is a resting cell of cyanobacteria and unicellular and filamentous green algae. [Elfgren, I. K. (2003) "Studies on the Life Cycles ofAkinete Forming Cyanobacteria." Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 856, Acta Universitatis Upsaliensis. ISBN 91-554-5665-0] Under magnification, akinetes appear thick walled with granular-looking cytoplasms.

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  • Akinete — Akinète Une akinète est une cellule dormante aux parois épaisses dérivée du grossissement d une cellule végétative[1]. On la trouve chez les cyanobactéries et chez les algues vertes unicellulaires et filamenteuses. Un grossissement au microscope… …   Wikipédia en Français

  • Akinète — Une akinète est une cellule dormante aux parois épaisses dérivée du grossissement d une cellule végétative[1]. On la trouve chez les cyanobactéries et chez les algues vertes unicellulaires et filamenteuses. Un grossissement au microscope d une… …   Wikipédia en Français

  • akinete — /ak euh neet , ay kuy neet/, n. (in certain algae) a nonmotile, asexual spore formed within a cell, the wall of which is fused to that of the parent cell. Cf. aplanospore. [ < Gk akínetos without movement, equiv. to a A 6 + kínetos moving, deriv …   Universalium

  • akinete — ak·i·nete …   English syllables

  • akinete — (ˈ)āˈkīˌnēt, ˈakəˌ noun ( s) Etymology: Greek akinētos motionless, from a a (II) + kinētos moving, from kinein to move; akin to Greek kiein to go more at hight in certain algae : a thick walled single celled nonmotile asexual resting spore formed …   Useful english dictionary

  • Acinète — Akinète Une akinète est une cellule dormante aux parois épaisses dérivée du grossissement d une cellule végétative[1]. On la trouve chez les cyanobactéries et chez les algues vertes unicellulaires et filamenteuses. Un grossissement au microscope… …   Wikipédia en Français

  • nostoc — /nos tok/, n. any freshwater, blue green alga of the genus Nostoc, often occurring in jellylike colonies in moist places. [1640 50; < NL, coined by Paracelsus] * * * Any of the cyanobacteria that make up the genus Nostoc. The cells are arranged… …   Universalium

  • aplanospore — (ˈ)āˈplanəˌspō(ə)r noun ( s) Etymology: aplano + spore 1. : a nonmotile asexual spore formed by rejuvenescence in certain algae and distinguished from an akinete by developing a new cell wall distinct from that of the parent cell compare… …   Useful english dictionary

  • Heterocyst — Heterocysts are specialized nitrogen fixing cells formed by some filamentous cyanobacteria, such as Nostoc punctiforme , Cylindrospermum stagnale and Anabaena sperica , during nitrogen starvation. They fix nitrogen from dinitrogen (N2) in the air …   Wikipedia

  • aplanospore — /ay plan euh spawr , spohr /, n. (in certain algae and fungi) a nonmotile, asexual spore formed within a cell, the wall of which is distinct from that of the parent cell. Cf. akinete. [aplano (see APLANOGAMETE) + SPORE] * * * …   Universalium

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