anabaena and nostoc
DESCRIPTION
Details of Cyanobacteria Nostoc and AnabaenaTRANSCRIPT
ANABAENA & NOSTOCIn full details
Prepared by:Ezel Anne R. Benitez
Anabaena & Nostoc
Domain: Prokarya no true nucleus and no
membrane bound organelles.
Kingdom: Bacteria
Phylum: Cyanobacteria acquire energy through
photosynthesis blue-green algae.
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
Anabaena & Nostoc
AnabaenaGenus: Anabaena Known for its intercalary
heterocysts and isolated or amorphous filaments.
AnabaenaComprehensive 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>vegetative cell)
Sraight
Coiled
Vegetative cell
AnabaenaHabitat (based on 14 specimen)
Depth range: 0-1m
Large Temperature range: up to 74°C
Large Salinity Range
Source: Ocean Biogeographic Information System
Sraight
Coiled
Vegetative cell
AnabaenaReproduction: trichome fragmentation
(usually at heterocytes) and by akinetes.
Motility:gliding type movementPredators:Bosmina longirostris
Sraight
Coiled
NostocGenus: Nostoc contains organisms that form
spherical colonies of filaments embedded in a gelatinous substance
Nostoc
NostocComprehensive Description cylindrical, spherical or ovoid
cells Heterocysts are intercalary Size of colonies range from
microscopic to 20cm diameter
Some form a gelatinous colony
NostocHabitat:Depth: 0-0mTemperature range: adapted to extreme environments
Reproduction: by fragmentation
Nostoc flagelliforme Edible, delicacies in Asia
Nostoc
Predators:Leptodiaptomus siciloidesHolopedium gibberumDaphnia pulexDiaphanosoma leuchtenbergianum
Sources: http://bioweb.uwlax.edu/bio203/2010/towers_albe/
Classification.htm http://eol.org/pages/11687/details http://bioweb.uwlax.edu/bio203/s2008/kaisersa_jose/
Life%20and%20Interactions.html http://www.britannica.com/EBchecked/topic/420477/
Nostoc http://web2.uwindsor.ca/courses/biology/fackrell/
Microbes/11725.htm http://eol.org/pages/11781/details