Effects of temperature on growth, pigment composition and protein content of an Antarctic Cyanobacterium Nostoc commune

biomass accumulation, pigment composition and protein content were studied for the cyanobacterium Nostoc commune, isolated from Antarctica. Results confirmed the psychrotrophic behavior (optimum growth temperature 250C) of the cyanobacterium. Low temperature increased the duration of lag phase and e...

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Bibliographic Details
Main Authors: Short Communication, Ranjana Tripathi, Umesh P. Dhuldhaj, Surendra Singh
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2012
Subjects:
Key words
Cyanobacterium
low-temperature
growth rate
phycobiliproteins
pigments
Antarctic
Antarc*
Antarctica
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.679.3151
http://biosains.mipa.uns.ac.id/N/N0403/N040308.pdf
Description
Summary:biomass accumulation, pigment composition and protein content were studied for the cyanobacterium Nostoc commune, isolated from Antarctica. Results confirmed the psychrotrophic behavior (optimum growth temperature 250C) of the cyanobacterium. Low temperature increased the duration of lag phase and exponential growth phase. Maximum increase in biomass was recorded on 24th day at 250C and on 12th day at 50C. The downshift from 25 to 50C had almost negligible effect on chl a content. Maximal protein content was recorded for cultures growing at 50C on 12th day. The carotenoids/chl a ratio was maximum (2.48) at 50C on 9th day. It remained almost constant for cultures growing at 5 and 350C. There was an induction in protein synthesis following downshift in temperature from 25 to 5◦C.

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