Respiratory activity in the marine cyanobacterium Spirulina subsalsa and its role in salt tolerance

1992 ◽  
Vol 157 (2) ◽  
pp. 183-190 ◽  
Author(s):  
Rachel Gabbay-Azaria ◽  
Mordechay Schonfeld ◽  
Shoshana Tel-Or ◽  
Rachel Messinger ◽  
Elisha Tel-Or
1988 ◽  
Vol 264 (1) ◽  
pp. 333-339 ◽  
Author(s):  
Rachel Gabbay-Azaria ◽  
Elisha Tel-Or ◽  
Mordechay Schönfeld

Author(s):  
L. P. Hardie ◽  
D. L. Balkwill ◽  
S. E. Stevens

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.


2013 ◽  
Vol 19 (2) ◽  
pp. 57-65
Author(s):  
MH Kabir ◽  
MM Islam ◽  
SN Begum ◽  
AC Manidas

A cross was made between high yielding salt susceptible BINA variety (Binadhan-5) with salt tolerant rice landrace (Harkuch) to identify salt tolerant rice lines. Thirty six F3 rice lines of Binadhan-5 x Harkuch were tested for salinity tolerance at the seedling stage in hydroponic system using nutrient solution. In F3 population, six lines were found as salt tolerant and 10 lines were moderately tolerant based on phenotypic screening at the seedling stage. Twelve SSR markers were used for parental survey and among them three polymorphic SSR markers viz., OSR34, RM443 and RM169 were selected to evaluate 26 F3 rice lines for salt tolerance. With respect to marker OSR34, 15 lines were identified as salt tolerant, 9 lines were susceptible and 2 lines were heterozygous. While RM443 identified 3 tolerant, 14 susceptible and 9 heterozygous rice lines. Eight tolerant, 11 susceptible and 7 heterozygous lines were identified with the marker RM169. Thus the tested markers could be efficiently used for tagging salt tolerant genes in marker-assisted breeding programme.DOI: http://dx.doi.org/10.3329/pa.v19i2.16929 Progress. Agric. 19(2): 57 - 65, 2008


2011 ◽  
Vol 3 (8) ◽  
pp. 52-54 ◽  
Author(s):  
Bhagya Lakshmi Jyothi Kusuma ◽  
◽  
Sharmila Begum S

2017 ◽  
Vol 16 (3) ◽  
pp. 109-118 ◽  
Author(s):  
Irfan Afzal ◽  
Abdul Rahim ◽  
Muhammad Qasim ◽  
Adnan Younis ◽  
Aamir Nawaz ◽  
...  

2019 ◽  
Vol 52 (3) ◽  
Author(s):  
Fahad Al-Qurainy ◽  
Salim Khan ◽  
Mohamed Tarroum ◽  
Mohammad Nadeem ◽  
Saleh Alansi ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document