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INDONESIA
JURNAL BIOLOGI INDONESIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08544425     EISSN : 2338834X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 847 Documents
 71   72   73   74   75 
SCREENING AND EVALUATION OF VARIOUS CARBON SOURCES ON THE ABILITY OF TRICHODERMA HARZIANUM INACC TO SOLUBILIZE INSOLUBLE PHOSPHATE Napitupulu, Toga P.; Ilyas, Muhamad; Kanti, Atit; Sudiana, I. Made
JURNAL BIOLOGI INDONESIA Vol 15, No 2 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i2.3814

Abstract

ABSTRACTOur previous works revealed that Trichoderma harzianum InaCC (Indonesian Culture Collection) produced volatile organic compounds that inhibited the growth of Fusarium oxysporum. The objective of this study was to evaluate the ability of T. harzianum InaCC to solubilize insoluble phosphate and optimize the carbon sources condition. Screening was conducted to 10 isolates of T. harzianum on Pikovskaya?s broth in 100-mL conical flasks. The cultures were incubated at 30 ± 1°C for  7 days on a rotary shaker at 80 r/min. All  T. harzianum isolates were observed for the solubility of insoluble tricalcium phosphate with the highest ability was performed by T. harzianum InaCC F88. Using this isolate, the optimization of insoluble phosphate solubilization was conducted on modifed Pivoskaya medium in 500-mL conical flasks in similar screening incubation condition with applying of different combination of phopshate sources (tricalcium phosphate and rock phosphate) and carbon sources (dextrose, lactose, and sucrose). When tricalcium phosphate was substituted by rock phosphate, less soluble phosphate was produced. Glucose was the best carbon source used for solubilization of both tricalcium phosphate and rock phosphate, then followed by lactose and sucrose. Acidification of medium was not the major mechanism of phosphate solubilization by T. harzianum. Based on the ability of high phosphate solubilization, T. harzianum InaCC F88 is the most potential strain as a plant growth promoting fungus among the 10  isolates of T. harzianum Ina CC.  Key words:  biocontrol, Pikovskaya medium,  phosphate solubilization, Trichoderma harzianum
NEST STUCTURES IN BORNEAN ORANGUTAN Prasetyo, Didik; Utami, Sri Suci; Suprijatna, Jatna
JURNAL BIOLOGI INDONESIA Vol 8, No 2 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i2.3042

Abstract

Struktur Sarang Orangutan Kalimantan. Nest-building techniques processes related partiesin choosing the trees, the basic building structure, making layers, and adding nest lockingsystem with accessories. There are Lacks of data about the pattern of the orangutan nest andonly van Schaik (1995) described four Variations of nest structure. By Following 22 orangutanswith instantaneous focal animal method, 19 vertical nest structures are found, and horizontallyvariations orangutan nest forming butterfly pattern. Tree species are Elaocarpus mastersiithat mostly used by Orangutan to build nest with type of branch direction and height of firstbranch as the Reasons. Nest was built in 5-9 meters height and they were seldom to rebuilt orreuse old nest. They seldom to develop their nest in the last fruit trees to avoid nightpredators.Kata Kunci: Orangutan, Struktur dan pola, sarang.
PERAN ADAT DAN PENSAKRALAN MATA AIR TERHADAP KONSERVASI AIR DI LERENG CIREMAI Noerdjito, Mas; Royani, Mohammad Fathi; Widodo, Hawal
JURNAL BIOLOGI INDONESIA Vol 5, No 3 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i3.3188

Abstract

ABSTRACTTraditional Role and Spring Sacredness For Water Conservation in the slope of MountCiremai. Kuningan Regency proclaimed as conservation regency. Consequently the way oflife in this regency should follow non-pollutant producing or non-environmental damagingactivities. This regency is intended to perform organic agriculture and water tourism (falls,lakes, and springs) destination. For those purposes, Kuningan Regency should maximize thepotency of natural catching and reserving rainfall area to be used efficiently thereafter.Kuningan Regency is surrounded by five DAS derived from the slope of Mount Ciremai. Atleast there are three sacred springs in Kuningan Regency including Balong Dalem, BalongCibulan, and Sumur Tujuh. All of them are located in Jalaksana District. Balong Dalem andSumur Tujuh are the centre of traditional ritual called kawin cai or mapag cai. The ritual implyingawareness of the society human life depend on water supply sustainability. Comparativeanalysis between sacred and non-sacred springs indicated that the sacred springs are betterand more conserved condition than that in non-sacred spring (Balong Darmaloka). However,there were still unique and threatened animals in sacred springs. Therefore, traditional rolesand spring sacredness in Kuningan are still needed for spring conservation. Unfortunately,many of governmental activities exhibited unawareness of local government to the springconservation which it should become their responsibility.Key words: Traditional ritual, water conservation, Ciremai, Kuningan Regency
KARAKTER SUARA LIMNONECTES MODESTUS (BOULENGER, 1882) ASAL SUAKA MARGASATWA NANTU, GORONTALO, SULAWESI BAGIAN UTARA Kurniati, Hellen; Hamidy, Amir
JURNAL BIOLOGI INDONESIA Vol 14, No 2 (2018): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v14i2.3728

Abstract

ABSTRACTCall characteristics of Limnonectes modestus (Boulenger, 1882) which is endemic to Sulawesi have never been described before.  The advertisement calls of two individual males collected from Nantu Wildlife Sanctuary, Gorontalo, northern Sulawesi were recorded in December 6, 2014 at air temperatures of 26°C.  Adobe Audition 3.0 software was used to visualize sound waves.  Advertisement call of L. modestus is very simple, which only has one type of call containing 1-6 pulses.  Pulse duration, pulse rate and call rate of the two individual males are very diverse, ranged between 21-56 milli seconds, 2.58 to 7.87 pulses/second and 0.09-1.16 call/second; but the frequency variation of call is very low, the lower frequency range between 515.6 to 593.0 Hertz (CV=3.1%), whereas the upper frequency range between 2179.0 to 2859.0 Hertz (CV=5.4%); the band width of the frequency range between 1616.5 to 2320.0 Hertz (CV=7.1%). Key words: vocalization, Limnonectes modestus, Nantu Wildlife Sanctuary, North Sulawesi 
UJI TOLERANSI TANAMAN KENTANG HITAM (PLECTRANTHUS ROTUNDIFOLIUS (POIR.) SPRENG.) HASIL RADIASI SINAR GAMMA TERHADAP CEKAMAN KEKERINGAN Ridwan, Ridwan; Handayani, Tri; Witjaksono, Witjaksono
JURNAL BIOLOGI INDONESIA Vol 12, No 1 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i1.2310

Abstract

Plectranthus rotundifolius (Poir.) Spreng. is one of the potential root crops to become an alternative food. The aim of thisstudy was to determine drought resistant status of Plectranthus rotundifolius irradiated by gamma irradiation. Thisexperiment was conducted in the Green House using a Completely Randomized Design with 2 factors and 5 replications.The first factor was plant number consisted of 7 accessions (D116, D69, M343, D40, M95, D3, and Klefa Imut/KI). Thesecond factor was the level of field capacity (FC) consisted of 100% FC, 60% FC, and 20% FC. The observed parameterwere vegetative and generative growth stage, stomatal conductance, leaf water potential, and chlorophyll content. The resultshowed that the resistance level of the 7 accessions can be devided into 3 categories: 1) The plants that were susceptible todrought i.e. D116, D69, M343, and KI; 2) The plants that were semi-tolerant to drought i.e. D40 and M95; and 3) The plantthat was tolerant to drought i.e. D3.Keywords: Plectranthus rotundifolius, gamma irradiation, drought stress
PERUBAHAN TUTUPAN HUTAN MANGROVE DI PANTAI TIMUR SUMATERA UTARA PERIODE 1977-2006 Onrizal, Onrizal
JURNAL BIOLOGI INDONESIA Vol 6, No 2 (2010): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v6i2.3154

Abstract

ABSTRACTLand-cover change of mangrove forests at eastern coast of North Sumatra in Period 1977 to2006. Mangrove is one of the world?s threatened major tropical environments. Nevertheless,activities that contribute to this depletion continue. The main objectives of this research wereto analyze the land cover change of mangrove forests in eastern coastal of North Sumatrabased on previous inventory in period 1997 to 2006 and to acquire the factors of mangrovedisturbance in the areas. In fact, mangrove forest areas in eastern coastal of North Sumatradecreased 59.68% from 103,425 ha in 1977 to 41,700 ha in year 2006. Expansion of aquacultureponds and extraction of timber and fuel wood were most important factors of mangrove forestdegradation in the areas. Therefore, we need to rehabilitate the degraded mangrove forests inthe area both massively and systematically, and to prevent the remaining mangrove forestsfrom destruction activities.Keywords: mangroves, land-cover change, North Sumatra
CENDANA (SANTALUM ALBUM ) DAN KEANEKARAGAMAN INANG SEKUNDERNYA DI DAERAH PESISIR KOLBANO, NUSA TENGGARA TIMUR Wawo, Albert H.; Abdulhadi, Rochadi
JURNAL BIOLOGI INDONESIA Vol 3, No 3 (2002): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i3.3468

Abstract

ABSTRACTSandalwood (Santalum album ) and diversity of their host secondary in Kolbano Village, Lesser Sunda Island. The population of sandalwood (Santalum album ) declined every year because is not cultivated yet by the local people. Inhibiting factors are not possess the knowledge and skills on sandalwood cultivation especially in host plant of sandalwood comprehension. Forest fire and illegal logging lead to lose of flora diversity and deteriorate of sandalwood growth. Result of this research shows that population of sandalwood in Kolbano Village is very low are four plants in Kampong Fatu Un and seven plants in kampong Spaha. In kampong Fatu Un was found eight species plant that compose to unity formation with sandalwood and seven species of them are secondary host of sandalwood. In kampong Spaha was obtained nine species plant that compose to sandalwood formation and seven species of them are secondary host of sandalwood. The highest distribution frequency of plant in two mentioned kampong was got by leucaena (Leucaena glauca) plant with respectively value 51.28% (Fatu Un) and 53.57 % (Spaha), whereas diversity value belong to Simpson Index were 0.71 (Fatu Un) and 0.64 (Spaha).Key words: Sandalwood, host plant, Kolbano village, Lesser Sunda Island
PENGUNCILAN GEN PENYANDI ENZIM NITRILASE ENAM ISOLAT BAKTERI UNGGULAN Riffiani, Rini; Sulistinah, Nunik; Sunarko, Bambang
JURNAL BIOLOGI INDONESIA Vol 11, No 1 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i1.2155

Abstract

Indonesia sebagai negara tropis memiliki biodiversitas yang sangat tinggi. Keanekaragaman hayati ini diperkirakan mencerminkan keanekaragaman kimiawi sekaligus keragaman genetik yang dapat dimanfaatkan untuk mencari biokatalis baru. Enam isolat bakteri yaitu GLB5, LP3, TPIK, MICC, 23A2, dan 23A2 telah diisolasi dari berbagai limbah industri dan mempunyai potensi sebagai pendegradasi nitril.  Pengucilan, identifikasi dan purifikasi gen penyandi enzim nitrilase dari keenam isolat bakteri tersebut  telah dilakukan. Dari kegiatan penelitian ini 3 isolat bakteri unggulan, yaitu GLB5, LP3, dan TPIK teridentifikasi sebagai Rhodococcus pyridinivorans, sedangkan  MICC teridentifikasi sebagai Bacillus substilis, 23A2 teridentifikasi sebagai Brevibacillus brevis, dan 26A2 teridentifikasi sebagai Microbacterium oxydans. Peta untaian basa nukleutida dari gen penyandi enzim nitrilase dari ketiga isolat yaitu GLB5, LP3, dan TPIK telah terpetakan dengan ukuran gen nitrilase sebesar 960 bp. Hasil analisis dengan BLASTN memperlihatkan bahwa fragmen gen nitrilase yang diamplifikasi dengan primer Nit1101F dan Nit1101R mempunyai homologi yang tinggi terhadap Rhodococcus rhodochrous strain tg1-A6 nitrilase gen dengan persentase kesamaan sebesar 96% . Kata Kunci: Gen, isolasi, nitril, degradasi, enzim 
SIRKULASI VIRUS AVIAN INFLUENZA H5N1 TAHUN 2010 : VIRUS GENETIC DRIFT MIRIP A/CK/WEST JAVA/PWT-WIJ/2006 DITEMUKAN DI BEBERAPA KABUPATEN DI SUMATRA DAN JAWA Dharmayanti, NLP Indi; Ratnawati, Atik; Hewajuli, Dyah Ayu; Indriani, Risa
JURNAL BIOLOGI INDONESIA Vol 8, No 1 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i1.3069

Abstract

The avian influenza H5N1 virus circulation in 2010 : Genetic Drift Like Virus A/Chicken/West Java/Pwt-Wij/2006 was found in several districts of Sumatra and Java. Until 2011, the H5N1 subtype of AI virus is still circulating in many parts of Indonesia. The discovery of the AI viruses which have undergone genetic drift since 2006 until now requires serious attention from the government in terms of AI disease control, the surveillance and monitoring of virus circulation and execution of genetic mapping to determine the genetic character of the AI virus at the molecular level, especially on the surface of glycoproteins (HA and NA protein).This information is needed to determine the diversity and character of the AI virus in Indonesia. Genetic data are used to evaluate the strategy to control AI in Indonesia, such as vaccination and the vaccine seed used and determine the extent of AI virus mutation in Indonesia has beenmutated. This study conducted by monitoring of the AI virus circulation throughout 2010. The methods used were AI virus isolation, RT-PCR, sequencing of genes coding for viral surface and the prediction of three-dimensional analysis to determine the location of virusmutation. The results of this study showed that most of the AI virus subtype H5N1, which was isolated during the year 2010, showed similar mutations to the genetic drift virus in 2006, A /Ck/West Java/Pwt-Wij/2006. The viruses were characterized by the presence of 18-19 amino acid substitutions at the level of the HA protein. On the NA protein level, there is a single mutation which was buried in the NA molecule. This mutation probably did not influence for NA activity. Genetic mapping of AI virus subtype H5N1 in 2010 showed that the viral genetic driftas the mutan virus A/Ck/West Java/Pwt-Wij/2006 have circulated not only in West Jawa alone but has been found on the island of Sumatra, Banten, West Jawa and East Jawa.Keywords: Circulation, avian influenza H5N1 virus, genetic drift
KEGIATAN GUNUNGAPI CIREMAI JAWA BARAT DAN PENGARUHNYA TERHADAP LINGKUNGAN DI SEKITARNYA Pratomo, Indyo
JURNAL BIOLOGI INDONESIA Vol 4, No 5 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i5.3212

Abstract

ABSTRACTThe Activity of Ciremai Mountain and The Impact Eruption at the SurroundingArea The Ciremai Mountain is one of the active mountain in West Jawa, the last eruptionwas detected between June 1937 to 7 January 1938, it has respite period for 3-112 years.The potential threatening of the eruption was detected by the pirolastica, the rain dustand ballistic explosion, the current and sliding of lava. The complete history of CiremaiMountain and the dangerous area by eruption were discussed hereKeywords: Ciremai, activity, eruption

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