Isolation and characterization of pigmented algicidal bacteria from seawater

2014 ◽  
Author(s):  
Shaima A. ◽  
Gires U. ◽  
Asmat A.
2016 ◽  
Vol 17 (3) ◽  
pp. 792-798 ◽  
Author(s):  
Taketoshi Shimizu ◽  
Takuya Oda ◽  
Hiroyuki Ito ◽  
Ichiro Imai

Algicidal bacteria that attack Dolichospermum crassum were isolated from the Karasuhara Reservoir in October 2010. Phytoplankton monitoring was performed from April 2010 to March 2011, and D. crassum was detected from August to November. At its peak frequency (in early October), it accounted for 23% of all phytoplankton cells. Heterotrophic bacteria were isolated from the surface water, and an algicidal assay was conducted. As a result, 3 out of 47 bacterial strains showed strong algicidal activity, and they completely destroyed the trichomes of D. crassum. An initial inoculation dose of only 1.0 × 102 cells ml−1 of these strains was enough to digest D. crassum. These strains were identified as Rheinheimera spp. according to 16S rDNA sequence analyses. This is the first report about algicidal bacteria that attack D. crassum. Algicidal bacteria could be key agents for controlling D. crassum in reservoirs.


2014 ◽  
Vol 1065-1069 ◽  
pp. 3077-3082 ◽  
Author(s):  
Ting Ting Liu ◽  
Yu Fu Peng ◽  
Li Liu ◽  
Xue Shan Xia

Algicidal bacteria as part of the microbial populations in natural waters, is possible toinhibit the growth of algae or kill algae, dissolve algal cells in a direct or indirect way. In this study,four algicidal bacteria were isolated from cyanobacteria bloom water of Lake Dianchi, designated asDCJ-1, DCJ-2, DCJ-3, DCJ-4 respectively. The algicidal range and algicidal activity assay of the fouralgicidal bacteria showed that they have different algicidal range on the 10 tested algal species, whichstrain DCJ-2 has the best algicidal activity. The results indicated that bacterial strain DCJ-2 has highalgicidal activity against the Plectonema boryanum and exhibited algicidal activity through directattack. The lytic effect of strain DCJ-2 against Plectonema boryanum was time-dependent. It could be a potential bio-agent to control the blooms of cyanobacteria.


2011 ◽  
Vol 16 (6) ◽  
pp. 1124-1133 ◽  
Author(s):  
Jeong-Il Oh ◽  
Min-Ju Kim ◽  
Ji-Young Lee ◽  
In-Jeong Ko ◽  
Wonduck Kim ◽  
...  

2000 ◽  
Vol 31 (2) ◽  
pp. 149-149 ◽  
Author(s):  
T Tozaki ◽  
H Kakoi ◽  
S Mashima ◽  
K Hirota ◽  
T Hasegawa ◽  
...  

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
B Tóth ◽  
N Kúsz ◽  
A Csorba ◽  
T Kurtán ◽  
J Hohmann ◽  
...  

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