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Scripta Biologica
Published by Universitas Jenderal Soedirman
ISSN : -     EISSN : 23553138     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Scripta Biologica is a peer reviewed open access electronic journal published by the Faculty of Biology Jenderal Soedirman University, publishes research papers encompasses all aspects of biology, including; molecular biology, cell biology, and genetics; physiology and reproduction; ecology and conservation; biodiversity, evolution, taxonomy, and biogeography.
Arjuna Subject : -
Articles 13 Documents
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Search results for , issue "Vol 4, No 3 (2017)" : 13 Documents clear
ISOLASI DAN KARAKTERISASI JAMUR LIGNINOLITIK SERTA PERBANDINGAN KEMAMPUANNYA DALAM BIODELIGNIFIKASI Putri Elvira Valencia; Vincentia Irene Meitiniarti
Scripta Biologica Vol 4, No 3 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.275 KB) | DOI: 10.20884/1.sb.2017.4.3.449

Abstract

Fungi can survive in various environments with different media including wood. Lignin in timber is hard to be degraded and hydrolyzed efficiently because of its polymer form, composite and complex structure. Ligninolytic fungi produce an extracellular enzyme to withstand with toxic or mutagenic chemicals exposure and known to degrade different types of pollutant compounds. Lignin decomposers were also known to play a significant role in the pulping process of paper mills, used in waste treatment such as textile and hydrocarbon wastes. This study was conducted to obtain fungal isolates that have delignification capability and to compare the ability of fungal isolates in degrading lignin. Isolates were from rotten wood and soil using selective lignin medium with tannic acid as sole C source. This study characterized the isolates by their morphology and identified them using Morphology and Taxonomy of Fungi book by Bessey (1950). The ligninolytic capability comparison was conducted by measuring the transparent zone formed on selective lignin media. This research found 14 isolates of fungi and all of them had the ligninolytic capability. Aspergillus niger isolate has the highest ligninolytic capability by producing 6.45 cm clear zone diameter on the 7th day of incubation. Aureobasidium sp. has the smallest clear zone diameter of 1.9 cm within the same period.
EFEKTIFITAS BAKTERI ENDOFIT DAN PENAMBAHAN INDOLE ACETIC ACID (IAA) DALAM MENINGKATKAN PERTUMBUHAN TANAMAN PADI Oryza sativa L. Aria Rizki Ramadhan; Oedjijono Oedjijono; Ratih Dewi Hastuti
Scripta Biologica Vol 4, No 3 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (896.711 KB) | DOI: 10.20884/1.sb.2017.4.3.542

Abstract

Rice plant needs essential and non-essential nutrients to grow. However, the use of inorganic fertilizers may affect the soil microbe community which expected to increase the availability of nutrients for both plants and microbes, a condition that could control several types of diseases. Many efforts were made to find alternative fertilizer which environmentally friendly, for instance by exploiting microorganisms such as endophytic bacteria associated with plant tissue or seed plant cell. This research aimed to determine the effect of endophytic bacteria, the concentration of IAA, and the combination of endophytic bacteria with a concentration of IAA, on the growth of rice plant. This research was conducted at the Laboratory of Soil Biology, The Soil Research Institute located in Cimanggu Bogor from December 2015 to February 2016. This research was a Completely Randomized Design (CRD) with two factors, i.e., the inoculant of endophytic bacteria (2.2 KT, KR 6, and I CM), and the concentration of IAA (0, 0.01, 0.1, 0.5, and 1 ppm). Three replicates were applied for each treatment of the inoculant combined with different doses of IAA. The variety of rice plants tested were Inpari 13 and IR 64. The potential test has been applied to determine the factor with the highest yield of the rice plant growth. The parameters observed were the height of the rice plant, the length of the rice plant roots, and the total weight of the plant including root. The results showed the inocula of endophytic bacteria alone had no effect to increase growth for both IR 64 and Inpari 13 rice variety. The IAA concentration of 0.1 ppm was able to increase the height of rice plant and the length of rice plant root for both IR 64 rice plant and Inpari 13. The combined treatment of KR 6 bacterial inoculum with 1 ppm of IAA concentration was effectively promoted rice plant growth for both IR 64 and Inpari 13.
STRUKTUR DAN VEGETASI TUMBUHAN BAWAH PADA TEGAKAN PINUS DI RPH KALIRAJUT DAN RPH BATURRADEN BANYUMAS Nadi Destaranti; Sulistyani Sulistyani; Edy Yani
Scripta Biologica Vol 4, No 3 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.041 KB) | DOI: 10.20884/1.sb.2017.4.3.407

Abstract

A study on the undergrowth vegetation within the pine woods (Pinus merkusii) stands conducted in RPH Kalirajut and RPH Baturraden. This study aimed to find out the composition of the shrubs of the pine woods stands on those two sites with different altitude and to figure out the similarity of the herbs of the pine woods stands on those two locations with the different height. This study applied quadrat sampling technique, using 30 units of 2 x 2 m quadrats divided into ten sub–transects along the main transect. We measured environmental factors including elevation, temperature, light intensity, and pH of the soil. We found undergrowth vegetation in RPH Kalirajut comprised of 32 species belonging to 20 families, dominated by Ottochloa nodosa, Oplismenus compositus, and Cynodon dactylon. On the other site, we found undergrowth vegetation in RPH Baturraden composed of 19 species belonging to 20 families and dominated by Wedelia trilobata, Paspalum conjugatum, and Clidemia hirta. The similarity of the herbs vegetation measured of those two sites was 30.85% or 69.15% different.

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