Details of Cyanobacteria Nostoc and Anabaena

1. Prepared by:
Ezel Anne R. Benitez

2. Domain: Prokarya
 no true nucleus and no
membrane bound
organelles.
Kingdom: Bacteria
Phylum: Cyanobacteria
 acquire energy through
photosynthesis
 blue-green algae.

3. Order: Nostocales
 they have trichomes
and lack endospores
and exospores.
Family: Nostocaceae
 category of blue-green
algae that form
heterocysts and have
unbranched trichomes.
 Nitrogen fixing

4. Genus: Anabaena
 Known for its intercalary
heterocysts and isolated
or amorphous filaments.

5. Comprehensive Description
 Filamentous (trichomes)
 May be coiled or straight
 With occational heterocysts
 Terminal cells may/ may not
be narrowed
 Akinetes may form
 Rare: trichomes may be
encased in mucilage
 Free floating
 Filaments are solitary or
clustered
 Cell Size: 4-50um
(Akinetes>heterocyst>vegetativ
e cell)
Vegetative cell

6. Habitat (based on 14 specimen)
Depth range: 0-1m
Large Temperature range: up to
74°C
Large Salinity Range
Source: Ocean Biogeographic
Information System
Vegetative cell

7. Reproduction:
 trichome fragmentation
(usually at heterocytes) and
by akinetes.
Motility:
gliding type movement
Predators:
Bosmina longirostris

8. Genus: Nostoc
 contains organisms that form
spherical colonies of
filaments embedded in a
gelatinous substance
Nostoc

9. Comprehensive Description
 cylindrical, spherical or ovoid
cells
 Heterocysts are intercalary
 Size of colonies range from
microscopic to 20cm
diameter
 Some form a gelatinous
colony

10. Habitat:
Depth: 0-0m
Temperature range: adapted to
extreme environments
Reproduction:
 by fragmentation
Nostoc flagelliforme
 Edible, delicacies in Asia

11. Predators:
Leptodiaptomus siciloides
Holopedium gibberum
Daphnia pulex
Diaphanosoma
leuchtenbergianum

12.  http://bioweb.uwlax.edu/bio203/2010/towers_albe/Classificati
on.htm
 http://eol.org/pages/11687/details
 http://bioweb.uwlax.edu/bio203/s2008/kaisersa_jose/Life%20
and%20Interactions.html
 http://www.britannica.com/EBchecked/topic/420477/Nostoc
 http://web2.uwindsor.ca/courses/biology/fackrell/Microbes/117
25.htm
 http://eol.org/pages/11781/details