In vivo evaluation of microbial cocktail of microalgae-associated bacteria in larval rearing from zoea I to mysis I of the Indian white shrimp, Penaeus indicus

2020 ◽  
Vol 32 (6) ◽  
pp. 3949-3954 ◽  
Author(s):  
S. V. Sandhya ◽  
K. P. Sandeep ◽  
K. K. Vijayan
2017 ◽  
Vol 16 (1) ◽  
pp. 41
Author(s):  
Adityawati Fajar Rini ◽  
Munti Yuhana ◽  
Aris Tri Wahyudi

<p class="Pa3"><strong>ABSTRACT </strong></p><p> </p><p class="Pa5"><em>Vibrio </em>sp. is a pathogen that causes a decrease in white shrimp production. Sponge-associated bacteria are known as bioactive compounds producer in marine habitat, such as antibacteria, which can be an alternative solution in preventing vibriosis. Thus, this study was aimed to obtain a sponge-associated bacteria biocontroller to inhibit vibriosis <em>in vitro</em>, <em>in vivo </em>and also in 16S-rRNA, Non-ribosomal peptide synthase (NRPS) and polyketide synthase (PKS) genes to demonstrate its ability of synthesizing (bioactive). <em>Aaptos </em>sp. and <em>Hyrtios </em>sp. sponges were collected from Pramuka Island, Jakarta. The isolation using sea water complete (SWC) and zobel marine agar (ZMA) resulted in 174 isolates, and a total of 69 isolates were successfully screened based on their antibacterial compound activity, while a total of 47 isolates were observed to have negative hemolysis (in hemolytic test). The pathogenicity test used twelve selected isolates, that have broad spectrums of antibacteria activity and hemolysis negative, showed that the selected isolates were not pathogenic to post-larva shrimp, indicating that shrimp survival rate (pathogenicity test) did not significantly differ (P&gt;0,05) compared to the negative control. Genetic analysis based on 16S-rRNA revealed three genera groups that belonged to <em>Pseudomonas</em>, <em>Staphylococcus</em>, and <em>Alcaligenes</em>. NRPS and PKS genes detection using PCR engendered four potential bacteria isolates, which have the NRPS gene only, and one isolate having the PKS gene only and one isolate having both NRPS and PKS genes, proving that the bacteria produce bioactive compounds.</p><p> </p><p class="Pa5">Keywords: NRPS, PKS, anti-vibriosis, white shrimp</p><p> </p><p> </p><p class="Pa3"><strong>ABSTRAK </strong></p><p> </p><p class="Pa5"><em>Vibrio </em>sp. merupakan salah satu bakteri patogen yang menyebabkan penurunan produksi udang. Bakteri yang berasosiasi dengan spons diketahui merupakan produsen senyawa bioaktif perairan salah satunya sebagai antibakteri. Hal ini dapat menjadi alternatif solusi dalam penanggulangan vibriosis. Penelitian ini bertujuan untuk memperoleh isolat bakteri asosiasi spons yang mempunyai kemampuan dalam menghambat vibriosis secara <em>in vitro</em>, <em>in vivo </em>dan mendeteksi gen 16S-rRNA, nonribosomal peptide synthase (NRPS) serta polyketide synthase (PKS) untuk memastikan kemampuan mensintesis senyawa bioaktif. Spons <em>Aaptos </em>sp. dan <em>Hyrtios </em>sp. berhasil dikoleksi dari perairan Pulau Pramuka, Kep. Seribu Jakarta. Isolasi bakteri dengan menggunakan media sea water complete (SWC) dan zobel marine agar (ZMA) diperoleh 174 isolat. Sebanyak 69 isolat terdeteksi memiliki aktivitas antibakteri. Uji hemolisis menunjukkan 47 isolat adalah hemolisis negatif. Uji patogenisitas menggunakan 12 isolat terpilih yang memiliki spektrum luas dan hemolisis negatif. Hasil uji patogenisitas tehadap 12 isolat menunjukkan bahwa semua isolat tidak bersifat patogen terhadap pascalarva udang vaname. Hal ini dibuktikan dengan sintasan pascalarva udang vaname yang tidak berbeda nyata (P&gt;0,05) dengan kontrol negatif. Hasil uji tantang terhadap <em>Vibrio harveyi </em>diketahui sintasan pascalarva udang vaname (70±5,0–90±0,0%) memiliki perbedaan yang signifikan jika dibandingkan dengan kontrol positif (38,3±2,9%). Berdasarkan analisis sekuen gen 16S-rRNA, menunjukkan bahwa isolat-isolat tersebut memiliki kemiripan dengan genus <em>Pseudomonas</em>, <em>Staphylococcus </em>dan <em>Alcaligenes</em>. Deteksi gen NRPS dan PKS menggunakan PCR diperoleh empat isolat bakteri memiliki hanya gen NRPS, satu isolat memiliki hanya gen PKS, dan satu isolat memiliki kedua gen NRPS-PKS. Hal ini membuktikan bahwa keenam isolat memiliki potensi sebagai penghasil senyawa bioaktif.</p><p> </p><p>Kata kunci: NRPS, PKS, antivibriosis, udang vaname</p>


2005 ◽  
Vol 25 (1_suppl) ◽  
pp. S598-S598 ◽  
Author(s):  
Laurent Martarello ◽  
Vincent J Cunningham ◽  
Julian C Matthews ◽  
Eugenii Rabiner ◽  
Steen Jakobsen ◽  
...  

2005 ◽  
Vol 25 (1_suppl) ◽  
pp. S595-S595 ◽  
Author(s):  
Wynne K Schiffer ◽  
Deborah Pareto-Onghena ◽  
HaiTao Wu ◽  
Kuo-Shyan Lin ◽  
Andrew R Gibbs ◽  
...  

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
J Bauer ◽  
F Dehm ◽  
A Koeberle ◽  
F Pollastro ◽  
G Appendino ◽  
...  

2008 ◽  
Vol 56 (S 1) ◽  
Author(s):  
D Ruzicka ◽  
W Eichinger ◽  
I Hettich ◽  
S Bleiziffer ◽  
R Guenzinger ◽  
...  
Keyword(s):  

Author(s):  
Pavani C H

Hyperlipidemia is the immediate results of the excessive fat intake in food. This results in the elevated levels of cholesterol and triglycerides in the blood. This leads to heart conditions like CAD, hypertension, congestive heart failure as risk factors which can be lethal. There are many drugs to treat and control the lipids levels in the body. These drugs are either designed to prevent LDL accumulation and VLDL synthesis. Some drugs also lower the elevated levels of saturated lipids in the body. But many drugs are known to cause side effects and adverse effects; therefore, alternatives to the drugs are the subjects for current investigations. Herbs and medicinal plants are used as treatment sources for many years. They have been used in the Indian medical systems like Ayurveda, Siddha etc. As the application of herbs in the treatment is growing, there is an urgent need for the establishment of Pharmacological reasoning and standardization of the activity of the medicinal plants. Chloris paraguaiensis Steud. is Poyaceae member that is called locally as Uppugaddi. Traditionally it is used to treat Rheumatism, Diabetes, fever and diarrhoea. The chemical constituents are known to have anti-oxidant properties and most of the anti-oxidants have anti-hyperlipidemic activity too. Since the plant has abundant flavonoid and phenol content, the current research focusses on the investigation of the anti-hyperlipidemic activity of the plant Chloris extracts. Extracts of Chloris at 200mg/kg showed a comparably similar anti hyperlipidemia activity to that of the standard drug. The extracts showed a dose based increase in the activity at 100 and 200mg/kg body weight.


Sign in / Sign up

Export Citation Format

Share Document