Cassava is an important carbohydrate source that provides food security and alternative renewable energy development. This plant is naturally drought tolerant, but there is a wide variation within cassava genotypes in their ability to maintain high yield and starch production under drought stress. It has been reported that cassava clones with leaf retention or stay- green trait can produce more…
A blue-green algae spiru1ina fusiformis was grown under various light regimes in a laboratory-scale experiment. A 500 watt halogen lamp was employed as the light source, while the light variation of 2,000 lux, 4,000 lux, 6,000 lux, 8,000 lu,c, and 10,000 lux was obtained by placing a series of 2 L experimental bottles at various distances. The growth medium used was a modified-Zarrouk medium wi…
Bt05 is marine bacterium which was isolated From the Jakarta flay, Indonesia. The aim of this study was to characterize PAHs-degrading property and molecular identification by partial analysis of 16S rRNA gene, and to partially analyze dioxygenase gene of 13105 isolate. Our further study on this isolate revealed that it could degrade three PAHs (phenanthrene, dibenzothiophene, fluorene) between…
The treatments of textile wastewater by chemical and physical methods have some drawbacks such as its economical feasibility and its relatively high cost, its lack of effective color reduction and its formation of by-product. Conversely, biological processes have been proposed as a less expensive and less environmentally intrusive alternative. In the present study, decolorization of various dye…
Isolation and screening have been undertaken on oil-degrading microbes from Indonesian marine environments. During screening process it has been found many bacterial isolates capable of degrading crude oil. Hence, study has been focused on the biodiversity of biosurfactant-producing bacterial species in Indonesian marine environment and its function for remedial the pollutant in marine and soil…
Growth of soybean plants was suppoed by the presence of nitrogen fixing bacteria. Besides nitrogen, other elements such as phosphate, potassium and growth hormones are also required. Endophytic bactea associated with Shorea selanica were isolated and tested for their ability to produce indole acetic acid (IAA) hormone and exhibit stress tolerance. Colorimetric analysis showed that isolate SSBt2…
Sponges are sources of various useful natural products. The natural compounds derived from sponges are mostly complex polyketide. The polyketide synthase genes (PKS) is responsible for the biosynthesis of complex polyketides. During this research, we detected ketosynthasc (KS) gene domain from 10 species of marine sponges, collected from Mediterranean Sea (Aplysina aerophoba, Petrocia ficiformi…
Development of rice varieties resistant to yellow stem borer (YSB) is very crucial. Agrobacterium-mediated transformation of CrvlB gene under wound inducible gene promoter mpi (maize proteinase inhibitor) into a local rice variety Rojolele had been conducted. PCR analysis proved that Cry1 B gene had been integrated into plant genome of 3R25 and 3R5 rice lines. Segregation analysis using PCR for…
Control and eradication of a number of infectious diseases are primarily attributed to effective vaccination programs. A concerted effort is still imperative to develop novel vaccines and improve the immunogenicity of existing ones with regards to efficacy, immunogenicity and safety. Rational design of vaccines using subunit vaccines is a potentially safer alternative to conventional vaccines, …
Kami telah mengembangkan metode perbanyakan tanaman 'kentang Hausa' yang efektif melalui proliferasi tunas in vitro, aklimatisasi di rumah kaca, dan transplantasi bibit ke wadah media individual untuk produksi bahan tanam. Kultur tunas dimulai dari tunas tanpa umbi yang dikumpulkan dari lapangan, didisinfeksi menggunakan metode standar, dan dipindahkan ke media MS dengan 1 mg/i BA untuk prolife…