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

被引：1
|
作者：
Tripathi, Ranjana [1 ]
Dhuldhaj, Umesh P. [1 ]
Singh, Surendra [1 ]
机构：
[1] Banaras Hindu Univ, Fac Sci, Ctr Adv Study Bot, Varanasi 221005, Uttar Pradesh, India
来源：
NUSANTARA BIOSCIENCE | 2012年 / 4卷 / 03期
关键词：
Cyanobacterium; low-temperature; growth rate; phycobiliproteins; pigments;
D O I：
10.13057/nusbiosci/n040308
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Tripathi R, Dhuldhaj UP, Singh S. 2012. Short Communication: Effects of temperature on growth, pigment composition and protein content of an Antarctic Cyanobacterium Nostoc commune. Nusantara Bioscience 4: 134-137. Effect of temperature variation on 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 25 degrees C) 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 25 degrees C and on 12th day at 5 degrees C. The downshift from 25 to 5 degrees C had almost negligible effect on chl a content. Maximal protein content was recorded for cultures growing at 5 degrees C on 12th day. The carotenoids/chl a ratio was maximum (2.48) at 5 degrees C on 9th day. It remained almost constant for cultures growing at 5 and 35 degrees C. There was an induction in protein synthesis following downshift in temperature from 25 to 5 degrees C.
引用
收藏
页码：134 / 137
页数：4
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