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All Journal JURNAL PEMULIAAN TANAMAN HUTAN Jurnal Biologi Tropis Jurnal Hutan Tropika
Yosie Syadza Kusuma
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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DIFFERENTIALLY EXPRESSED GENES (DEGS) PADA Dryobalanops aromatica YANG DITUMBUHKAN PADA MEDIA GAMBUT DAN TANAH MINERAL Yosie Syadza Kusuma; Fifi Gus Dwiyanti; Deden Derajat Matra; Ulfah Juniarti Siregar; Iskandar Zulkarnaen Siregar
Jurnal Pemuliaan Tanaman Hutan Vol 15, No 2 (2021): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2021.15.2.115-128

Abstract

Dryobalanops aromatica is a highly economic value resin-producing tree and has been known as an important international trade commodity that is widely used in the perfume, cosmetic, medicine, and wood industries. In natural habitats, this species has been found to grow well on peatland and mineral soils. The information regarding adaptive genes in Indonesian native trees to abiotic stress is still very limited. The research was conducted to analyse the differentially expressed genes (DGEs) that can elucidate the role of several upregulated and down-regulated genes under peat media and mineral soil treatments. DGE analysis was carried out using R software, Bioconductor package 'edgeR'. Using the Benjamini and Hochberg approach to control FDR (FDR 0.05), with a Log2FC 2 and p-value of 0.05, showed 320 contigs were up-regulated and 439 contigs were down-regulated, while 58129 contigs were not significantly expressed. Furthermore, this study also presents an overview of the genes involved in different pathways, such as photosynthesis, carbon and energy metabolism, hormone-related genes, nitrogen metabolism, reactive oxygen species, and transcription factor. This information will be useful in understanding D. aromatica molecular responses to stress condition that may be of use for selecting genotypes in the breeding programs or peatlands restoration
Analysis of the Comfort Level of Green Open Spaces in Medan Srena, Mona Fhitri; Alfi Laila Zuhriansah; Kusuma, Yosie Syadza; Ria Astuti; Rizky Febriana Br Lubis; Rahmah, Hanifa; Sidabukke, Simon H
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.9832

Abstract

Urban environmental comfort increasingly challenged by rapid population growth and development. Green Open Spaces (GOS) are crucial in enhancing community also life quality. This study assess the comfort value of GOS in Medan City by examining physical, biotic, and social factors. The research employed a combination of vegetation inventory to evaluate biodiversity, environmental measurements to assess air quality and noise levels, and public perception surveys to understand social comfort. The findings reveal that Cadika Park possesses the highest vegetation diversity with 31 tree species, dominated by Terminalia mantaly, which also recorded the highest Leaf Area Index (LAI) of 1.78. Physically, air quality within GOS areas is better than outside, although noise levels still exceed environmental quality standards. Socially, the community perceives GOS as comfortable and beneficial for daily activities. In conclusion, despite certain physical limitations, GOS in Medan City contributes positively to environmental comfort, underscoring the need for continuous management and sustainable development of urban green spaces.
Influence of Fly Ash Addition on Nutrient and Microbial Population in Citronella Leaf Waste Composting Zuhriansah, Alfi Laila; Mansur, Irdika; Budi R, Sri W.; Astuti, Ria; Lubis, Rizky Febriana Br; Rahmah, Hanifa; Shrena, Mona Fitri; Kusuma, Yosie Syadza
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.9907

Abstract

The response of composting microbes to fly ash can show an increase or decrease in population depending on the type and concentration of fly ash used. This study aims to identify the effect of fly ash addition on the composting of citronella (Cymbopogon nardus (L.) Rendl.) leaf waste, specifically in relation to changes in the C/N ratio and the number of composting microbes, and the identification of fungal species that developed during the process. The composting treatments included citronella leaf waste without alkali (K), also with the addition of alkali in the form of 2% dolomite (D), fly ash of 2% (FA1), 5% (FA2), 10% (FA3) and 15% (FA4). The analysis used in this study was a quantitative descriptive analysis related to the analysis of C-organic and total N, as well as composting microbes. Quantitative descriptive analysis was employed to assess C-organic content, total nitrogen, and microbial populations. The results demonstrated that the incorporation of fly ash influenced both the C/N ratio and microbial abundance. The addition of 10% fly ash proved to be the most effective treatment, increasing nitrogen content and reducing the C/N ratio to 26, while supporting bacterial growth up to 3.0 × 10¹¹ CFU/g. Fungal identification revealed the presence of Rhizopus sp., Trichoderma sp., and Aspergillus sp., which contribute to the degradation of organic matter in citronella leaf waste.
Alternative Seedling Media Using Dicranopteris linearis and Rice Husk Charcoal for Acacia mangium Astuti, Ria; Pamoengkas, Prijanto; Srena, Mona Fhitri; Zuhriansah, Alfi Laila; Rahmah, Hanifa; Kusuma, Yosie Syadza; Br Lubis, Rizky Febriana
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.9908

Abstract

Seedling quality contributes significantly to the development of industrial forest plantations. This study assessed Dicranopteris linearis (Resam) and rice husk charcoal mixtures as an alternative nursery media for Acacia mangium Willd. seedlings. The study was carried out using a Completely Randomized Design, and the data were analyzed using ANOVA. Five mixtures of resam and rice husk charcoal were tested: A (100% control), B (80%:20%), C (70%:30%), D (60%:40%), and E (50%:50%). The ratio of 70%:30% yielded the best performance, with a mean height of 12.84 cm, fresh weight of 4.63 grams, dry shoot weight of 1.53 grams, and a Seedling Quality Index (SQI) of 0.0018. These findings highlight mixed media C as the most effective composition and confirm the potential of resam and rice husk charcoal mixture as an effective and sustainable nursery media for industrial forest plantation.
Ecology of Scaphium macropodum in the Sarolangun Jambi Production Forest Area Lubis, Rizky Febriana Br; Marpaung, Sutan Sahala Muda; Srena, Mona Fhitri; Kusuma, Yosie Syadza; Batubara, Junianto S.; Siadari, Ulidesi
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7774

Abstract

The Pengulu Tribe in Limun District, Sarolangun Regency, Jambi Province, has long used the fruit of *Scaphium macropodum*—locally known as "merpayang" or "mempayang"—as a traditional medicine. *Scaphium macropodum* belongs to the Sterculiaceae family and has a broader distribution compared to its seven subspecies. This study investigates the ecology of *S. macropodum* to provide initial information on its use by the Pengulu Tribe, as well as the population and habitat conditions in Sarolangun Jambi's production forest. The study aims to estimate the population of *S. macropodum* in the forest and analyze the ecological factors influencing its habitat. Conducted between December 2023 and January 2024, the research utilized observation, interviews, and literature review methods, with data analyzed descriptively and qualitatively. Ecological factors were examined using the Importance Value Index (INP), diversity and evenness indices, community similarity index (Ward method), and Principal Component Analysis (PCA). The study identified 47 species from 18 tree families within the *S. macropodum* habitat. The dominant species in two research sites, APL NM and HA DM, were *Shorea parviflora* (meranti). At HL DT and APL DM, the dominant species were *Shorea multiflora* (squirrel coconut) and *Canarium* sp. (mosquito legs). The Shannon-Wiener diversity analysis indicated moderate diversity and evenness across the four sites. APL NM and HA DM had significant community similarity (90.81%), while APL DM had a lower diversity index compared to the other sites.
Evaluating the Growth Performance of Three Fast-Growing Species in Coal Mine Reclaimation in Aceh : Evaluasi Kinerja Pertumbuhan Tiga Spesies Pohon Cepat Tumbuh pada Lahan Reklamasi Tambang Batu Bara di Aceh Kusuma, Yosie Syadza; Riharja. TJ, Yuni Septia; Arlita, Tuti; Rosita, Ida; Wijaya, Laila
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.24002

Abstract

Coal mining plays a crucial role in global energy production and regional development, including in Aceh, Indonesia, where operations such as PT. Mifa Bersaudara contribute to energy supply and employment. This study evaluated the revegetation success of three fast-growing species (Falcataria moluccana, Enterolobium cyclocarpum, and Gmelina arborea) in post-mining reclamation areas planted in 2017 and 2018. Planting was performed at a uniform spacing of 4 × 4 m across 27 plots (8 in 2017, 19 in 2018), each measuring 20 × 20 m and containing 25 trees per plot, with a sampling intensity of 3%. Analyzed using descriptive statistics, two-way ANOVA with Tukey HSD, t-test, and Wilcoxon rank-sum tests. Results showed F. moluccana achieved the highest height (17.53 ± 24.75 m in 2017; 10.73 ± 2.88 m in 2018) and diameter (22.25 ± 8.12 cm in 2017; 31.84 ± 11.59 cm in 2018), followed by E. cyclocarpum, while G. arborea grew more slowly. Survival rates of the planted trees remained relatively high in both planting years, with 80.0 ± 19.0% in 2017 and 70.2 ± 16.9% in 2018, and statistical analysis indicated no significant difference between the two years. Fast-growing species enhanced canopy cover, soil stabilization, and microhabitats, supporting slower-growing species, and their combination is recommended to optimize short-term revegetation success and long-term ecosystem resilience in degraded areas.
Co-Authors Br Lubis, Rizky Febriana Budi R, Sri W. Deden Derajat Matra Fifi Gus Dwiyanti Hanifa Rahmah Ida Rosita Irdika Mansur ISKANDAR ZULKARNAEN SIREGAR Junianto S. Batubara Lubis, Rizky Febriana Br Mona Fhitri Srena Prijanto Pamoengkas Ria Astuti Riharja. TJ, Yuni Septia Rizky Febriana Br Lubis Siadari, Ulidesi Sidabukke, Simon H Sutan Sahala Muda Marpaung Tuti Arlita Ulfah Juniarti Siregar Wijaya, Laila Zuhriansah, Alfi Laila