What does hormogonia mean?
Hormogonia are motile filaments of cells formed by some cyanobacteria in the order Nostocales and Stigonematales. They are formed during vegetative reproduction in unicellular, filamentous cyanobacteria, and some may contain heterocysts and akinetes. This Cyanobacteria-related article is a stub.
What is hormogonia in Nostoc?
the genus Nostoc, hormogonia are defined as filaments that. lack heterocysts and haveone or more of the following. properties: rapid gliding motility, smaller cell size, and. different cell shape, all in comparison with vegetative cells. and filaments (13).
What do Akinetes do?
Akinetes differentiate from vegetative cells and provide a seed bank for rapid repopulation of the water column (Hori et al., 2003; Karlsson-Elfgren et al., 2004). These dormant cells survive harsh conditions in bottom sediments and dried-up shores of streams, pools and lakes.
How do you pronounce Hormogonia?
- Phonetic spelling of hormogonia. hor-mogo-nia. hawr-muh-goh-nee-uh m. hor-mogo-ni-a.
- Meanings for hormogonia.
- Translations of hormogonia. Spanish : hormogonios.
What are auxospores and hormogonia?
The auxospores may be autogamous, isogamous, anisogamous or oogamous. Their pattern of formation differs in pennate and centric diatoms. Formation of hormogonia is the common method of reproduction in Nostoc which are produced by accidental breaking of trichome into several pieces.
How hormogonia are formed in nostoc and oscillatoria?
Abstract. Nostocacean cyanobacteria typically produce gliding filaments termed hormogonia at a low frequency as part of their life cycle. competent in establishing a symbiotic association with the hornwort Anthoceros punctatus formed hormogonial filaments at a high frequency in the presence of A. punctatus.
What is a Heterocyst What does it do?
A heterocyst is a differentiated cyanobacterial cell that carries out nitrogen fixation. The heterocysts function as the sites for nitrogen fixation under aerobic conditions. They are formed in response to a lack of fixed nitrogen (NH4 or NO3).
What is Heterocyst explain?
Definition of heterocyst : a large transparent thick-walled cell that is found in the filaments of some cyanobacteria and is the site of nitrogen fixation.
How Hormogonia are formed in nostoc and oscillatoria?
What is meant by Akinetes?
An akinete is an enveloped, thick-walled, non-motile, dormant cell formed by filamentous, heterocyst-forming cyanobacteria under the order Nostocales and Stigonematales. Akinetes are resistant to cold and desiccation.