Asep Hidayat

• B.Sc, M.Agr, Ph.D
• Ministry of Forestry, Indonesia

a new species of Morchella was described from Mount Rinjani National Park (MRNP), indonesia, by combining comprehensive morphological characters and molecular data from four genes (its, lsU, tef1, and RPB2). the species is characterized by having large ascomata, with irregular or not parallel pits shaped and ridges; enlarged based stipe; large and...

a new species of Morchella was described from Mount Rinjani National Park (MRNP), indonesia, by combining comprehensive morphological characters and molecular data from four genes (its, lsU, tef1, and RPB2). the species is characterized by having large ascomata, with irregular or not parallel pits shaped and ridges; enlarged based stipe; large and...

Efforts to integrate tree plantation development, peatland conservation and arbuscular mycorrhizal fungal innovations are crucial for sustainable peatland management. During 2021–2024, Indonesia's Ministry of Forestry, the National Research and Innovation Agency, and Indah Kiat Pulp & Paper collaborated to research ways to restore degraded peatland...

Styrax sumatranus J.J.Sm is a plant from North Sumatra, which is widely used by community for religious rituals, medicines and it has economic value. Endophytic fungi are fungi that harbour inside the plant tissue without causing any negative effects to their host plant. Endophytic fungi isolated from the leaves and bark of Styrax sumatranus J.J.Sm...

Aquilaria malaccensis Lam. is known to produce high-grade agarwood, which is naturally distributed in Indonesia, and their trading has been regulated under the CITES Appendix II. This study aimed to analyze the genetic diversity of wild A. malaccensis from Indonesia. Forty-one samples of A. malaccensis were gathered from various wild populations or...

The majority of tropical forest plants form associations with Ectomycorrhizal fungi (EMF). These symbiotic fungi play important roles in promoting the survivability of their host, improving their productivity, and increasing microbial biodiversity in the underground. In order to promote the survivability and the growth of two peatlands tree species...

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence CC BY 4.0. Revolutionizing tropical peatland restoration in Indonesia: the 4N approach The Center for Standardization of Disaster Resilience and Climate Change Instruments, Indonesia Ministry of Environment and Forestry, and the Mushroom Initiati...

The major drawback of managing peat swamp forest ecosystems in Indonesia for production and conservation purposes is the intricate natural characteristics of peat soils. Peat soils naturally have limited oxygen availability because of the high water table and low nutrient concentrations. This unfavorable condition always leads to poor or stunted gr...

What sets this book apart is its emphasis on eco-friendly technology as a cornerstone of peatland restoration efforts. Readers will delve into an array of innovative methods, from state-of-the-art remote sensing and monitoring techniques to the application of sustainable land management practices. Through these advancements, the restoration process...

Keruing ( Dipterocarpus sp.) is a commercially important timber and oil-producing species. Keruing’s wood is of high quality, and its oil is widely used for medicinal purposes. Because of the high price and demand for wood and oil, keruing has become a target for exploitation and causing the population to decrease. Understanding of the keruing popu...

Most of the Indonesian agarwood in the international market is harvested from the wild, which raises concerns regarding its sustainability. The Government of Indonesia encourages agarwood cultivation produced from the cultivated Agarwood-Producing Tree (APT) to overcome this concern and replace natural agarwood. APT cultivation in Indonesia is not...

Benzoin resin, produced by the native Indonesian trees Styrax sumatrana and Styrax benzoin, has been incorporated into medical practices to treat wounds, erythema, and many other conditions for centuries. Endophytic fungi that reside within medicinal plants have antimicrobial, antioxidant, and α-glucosidase inhibitory capacities, contributing to pl...

Endophytic fungi are a group of fungi inhabiting the plant tissue for part or all of their life cycle without exposing any hazard to the host. Endophytic fungi can produce bioactive chemicals or secondary metabolites in proportion to their host plant, therefore no parts of the plant are needed to obtain these compounds. As a result, the survivabili...

Mangroves are an important ecosystem that provides valuable social, economic, and environmental services. Indonesia has placed mangroves on its national priority agenda in an important effort to sustainably manage this ecosystem and achieve national climate commitments. However, mangrove management is faced with complex challenges encompassing soci...

Mangroves are an important ecosystem that provides valuable social, economic, and en- vironmental services. Indonesia has placed mangroves on its national priority agenda in an im- portant effort to sustainably manage this ecosystem and achieve national climate commitments. However, mangrove management is faced with complex challenges encompassing...

Mangroves are an important ecosystem that provides valuable social, economic, and environmental services. Indonesia has placed mangroves on its national priority agenda in an important effort to sustainably manage this ecosystem and achieve national climate commitments. However, mangrove management is faced with complex challenges encompassing soci...

Mangroves are an important ecosystem that provides valuable social, economic, and environmental services. Indonesia has placed mangroves on its national priority agenda in an important effort to sustainably manage this ecosystem and achieve national climate commitments. However, mangrove management is faced with complex challenges encompassing soci...

Laccase (EC 1.10.3.2) is an extracellular enzymes that is widely used in the decolorization process of textile dye wastewater. The aims of this study was to isolate, purify, and characterize the laccase produced by Trametes pavonia EDN 134 and to explore the laccase ability to decolorize azo textile dyes. Laccase purification process was carried ou...

Yulita KS, Susilowati A, Rachmat HH, Susila, Hidayat A, Dwiyanti FG. 2022. Molecular identification of Eurycoma longifolia Jack from Sumatra, Indonesia using trnL-F region. Biodiversitas 23: 1374-1382. Eurycoma longifolia Jack (Simaroubaceae) or pasak bumi is a popular medicinal plant from Southeast Asia’s rainforests that is used as an aphrodisiac...

A strategy that has the potential to contribute to the achievement of the targets established under SDG 8 (“Decent Work and Economic Growth”) involves the development of sustainable tourism to create productive job and livelihood opportunities and to promote local culture and products. In the province of East Nusa Tenggara (NTT), Indonesia, ikat we...

Long jack (Eurycoma longifolia) is a medicinal plant that has become a common target for exploitation, leading to a population decline in natural forests. This study aimed to determine the stand structure and regeneration status of E. longifolia tree habitat in Batang Lubu Sutam Forest, Padang Lawas, North Sumatra. The research was performed throug...

Styrax benzoin is a native tree to Indonesia, particularly in North Sumatra. This plant species produces benzoin resin, which is beneficial for medicinal treatments, hence its commercial value. Endophytic fungi help produce bioactive metabolites and contribute to resin production. However, the diversity of endophytic fungal species from S. benzoin...

Mangrove forest is one of the forest ecosystems that can be found in tidal areas. Mangrove forest have ecological, socio-economic benefits for organisms that live in the sea. One of the microorganism that live in mangrove forest is fungus. Therefore, this study aimed to isolate and identify phosphate solubilizing and cellulolytic fungi from mangrov...

Gunung Dahu Research Forest (GDRF) is a 250 ha tropical degraded land reforested by native dipterocarps species. The reforestation success was valued by evaluating the planted trees’ growth performance, their potential timber stock, natural regeneration capacity, soil improvement, biological interdependence, and environmental services. This scienti...

Susilowati A, Rachmat HH, Elfiati D, Hidayat A, Hadi AN, Zaitunah A, Nainggolan D, Ginting IM. 2021. Floristic composition and diversity at Keruing (Dipterocarpus spp.) habitat in Tangkahan, Gunung Leuser National Park, Indonesia. Biodiversitas 22: 4448-4456. Dipterocarpus spp., or locally known as Keruing, is a wood-producing tree and has high eco...

Tropical forests are among the most diverse ecosystems in the world, completed by huge biodiversity. An expansion in natural resource extraction through open-pit mining activities leads to increasing land and tropical forest degradation. Proper science-based practices are needed as an effort to reclaim their function. This paper summarizes the exis...

Dipterocarpus or keruing belongs to member Dipterocarpaceae , known as commercial timber producer and oil for pharmacological purposes. Of 70 keruing species in the world, 38 species were found in Indonesia and listed in the IUCN Red List. Due to illegal logging, land conversion, low natural reproduction, and specific habitat requirements, the keru...

Endophytic fungi are a group of microorganisms colonizing the plant tissue without exposing hazardous effects to their host. Higher plants have endophytic microbes that produce bioactive compounds or secondary metabolites. The aim of the study was to isolate and identify endophytic fungi from the leaves, stems and bark of Styrax sumatrana . Samples...

Wild edible mushroom is one of the non-timber forest products that is important to the forest ecosystems. Locally known as Kulat Siau, Hygrocybe conica is one of the wild-edible mushrooms from the peatland ecosystem. In this study, we conducted a survey with the community about the identification, foraging activity, utilization, and economic value...

Styrax sumatrana , native to Sumatra island, Indonesia, is distinctive for its production of benzoin resin. The resin is used for medicinal treatments and commercially valuable. Fungal endophytes are known to produce various bioactive metabolites and may contribute to host resin production or properties. However, the diversity of culturable endophy...

Corn (Zea mays) is a commodity of food crops that are important after rice in Indonesia. Corn plantation produces waste in the form of corncob. Corncob is lignocellulosic biomass that can converted to cellulose, even sugar or another chemical like ethanol. The first step for utilization of corncob is delignification. The purpose of this study was t...

Crude oil pollution in soil is a major environmental problem over the world. After long-term contamination, crude oil can be buried in the soil and leaving the toxic and persistence compounds. Treatment of buried crude oil in soil is a major challenge. In this study, buried crude oil in soil (20 cm-depth) was treated by the co-culture of three fung...

Pinus merkusii Jungh et de Vriese, known as Tusam or Sumatran pine, is the only pine that grows naturally in the south of the Equator with its natural distribution found in Indonesia, the Philippines, Myanmar, Thailand, Laos, Cambodia, and Vietnam. The Sumatran pine is an economically and ecologically important species in Indonesia that covers thre...

The benefits of revegetation provided by the successful growth of planted vegetations. This paper described a successful initiative on the revegetation of tropical degraded land using native trees. More than 250 hectares of intact landscape in Gunung Dahu, West Java—Indonesia have been successfully revegetated using 32 Dipterocarp species. The succ...

Inoculation of arbuscular mycorrhizal (AM) fungi into micropropagated Eucalyptus pellita and Acacia crassicarpa, that may have poor root structures, was conducted. The study aimed to investigate the effects of Acaulospora sp., Acaulospora tuberculata , Entrophospora sp., Gigaspora sp., and two different isolates of Glomus maculosum inoculations on...

Faulina SA, Irfani M, Falah S, Hidayat A, Iswanto AH. 2020. Short Communication: The higher laccase enzyme producer, Cerrena sp. BMd. TA.1, isolated from Gunung Rinjani National Park, West Nusa Tenggara, Indonesia. Biodiversitas 21: 3837-3842. Lies in the Wallace line, Gunung Rinjani National Park (GRNP) offers unique biodiversity, fungi included....

The use of white-rot fungus for dyestuff degradation is alternative of eco-friendly strategy on removal of industrial effluents. This study was conducted to investigate the decolorization of dyes using laccase produced by Cerrena sp. BMD.TA.1 isolated from Gunung Rinjani National Park (GRNP), West Nusa Tenggara – Indonesia. This fungus had capabili...

The restoration of peat swamp forests in Sumatra island has become Indonesian government’s priority to restore ecological functions and their utilization. Indigenous. However, little information is available on the status of arbuscular mycorrhizal (AM) fungi in Sumatera. The objective of this research was to know AM fungi colonization in indigenous...

It has been reported that the lidah mertua plant (Sansevieria trifasciata) can absorb electromagnetic radiation from various electronic equipment. The current study aimed to make a film layer from polyvinyl alcohol (PVA) and a dichloromethane (DCM) fraction of S. trifasciata to reduce heat radiation from smartphones. S. trifasciata leaves were mace...

Tristaniopsis obovata (pelawan) bersimbiosis dengan fungi ektomikoriza yang menghasilkan tubuh buah fungi yang dapat dikonsumsi (edible mushroom) dan bunga pelawan sebagai sumber nektar untuk lebah hutan yang memproduksi madu pahit yang bernilai ekonomi tinggi. Permasalahan yang dihadapi saat ini adalah berkurangnya luasan hutan kerangas akibat kon...

Sari Tristaniopsis obovata (pelawan) bersimbiosis dengan fungi ektomikoriza yang menghasilkan tubuh buah fungi yang dapat dikonsumsi (edible mushroom) dan bunga pelawan sebagai sumber nektar untuk lebah hutan yang memproduksi madu pahit yang bernilai ekonomi tinggi. Permasalahan yang dihadapi saat ini adalah berkurangnya luasan hutan kerangas akiba...

Kemenyan Toba (Styrax sumatrana) is known as endemic resin-producing trees that naturally grow in North Sumatra and distributed throughout five districts within the province. Different growing site may constitute to different characteristics of the species, e.g. morphological differences, chemical constituent, bioactive substances, etc. Different c...

The huge diversity of Indonesian biological resources stands from the vast tropical rainforest to the invisible microbes. They work in harmony to keep system in balance condition. However, the beneficial function of the microbes will disappear when external disturbance, such as illegal logging, forest fires, conversion and exploitation occurred. As...

Rhizophora mucronata is an important ecosystem entity of the Malaysian mangrove forest. Since the species grows in a harsh environment, any organism that is isolated from this species would be of huge interest due to its potential in having novel bioactive compounds. In the present work, we isolated, identified and characterized, a total of 78 fung...

Kemenyan resin from Styrax sumatrana is a unique non-timber forest product (NTFP) native from Sumatera Island, Indonesia. It possesses a wide range of applications in the pharmaceutical, perfume, and cosmetics industries. In this paper, six kemenyan resin samples were investigated to evaluate their free radical scavenging activity using 1,1-dipheny...

The ability of a new isolate tropical fungus Trametes hirsuta D7 to degrade phenanthrene, chrysene, and benzo[a]pyrene (BaP) was investigated in this study. Predicting metabolic pathway was analyzed by the identification of degradation products of phenanthrene using TMS derivatization. Comparison with the NIST-library and the authentic standard wer...

The use of microbial enzymes seems to be an appropriate approach to neutralize synthetic dyes, providing an eco-friendly and cost-competitive alternative solution for treating industrial effluents. The objective of this research was to select the most potential fungal isolate with high laccase activity to decolorize Remazol Brilliant Blue R (RBBR)...

Kekayaan sumber daya Kehutanan Indonesia sangat beragam mulai dari tegakan hutan hujan tropis, binatang dan satwa liar, jasa lingkungan dan beragam jenis mikroba. Mereka memerankan fungsi yang saling bertautan untuk menyimbangkan kondisi lingkungan yang ideal. Beragam jenis pohon hutan dianggap sebagai pusat pembentuk sinergisme komunitas mikroba h...

Jamur pelapuk putih Basidiomycetes adalah kelompok mikroba yang sangat unik. Secara alami mereka dapat mendekomposisi biomassa berlignoselulosa. Keberadaan hutan tropis Indonesia saat ini terus berkurang akibat kebakaran hutan, eksploitasi yang berlebihan, konversi lahan, dan biopiracy. Secara alami, jamur pelapuk putih berpotensi untuk dimanfaatka...

Since the first oil well drilled successfully in 1859, crude oil has been a serious problem around world, including Indonesia. As a source of all petroleum products, crude oil is very complex component and divided into aliphatic, aromatic, resin and asphaltene. Petroleum products have been used for daily life and created large amounts of pollutants...

Lingkungan darat, laut dan udara di bumi ini adalah anugrah Allah, Tuhan YME, dan digunakan sebagai tempat untuk hidup dan berkembang biak. Pada sebuah lingkungan yang normal, setiap mahluk hidup yang ada didalamnya memainkan yang saling menguntungkkan. Tanaman memproduksi oksigen, sementara mikroorganisme mendaur ulang sisa buangan yang tidak berm...

New challenges are associated with crude oil biodegradation by microorganisms during extended bioremediation due to decreasing enzymatic oxidation. In the present study, strategies to maintain enzymatic oxidation during the extended bioremediation of oily soil microcosms were examined using periodic biostimulation and bioaugmentation (PBB). PBB was...

Indonesia has as a country that has a high diversity of agarwood-producing trees (APT) species compared to other countries in Asia. Unfortunately, the populations of APT species have declined significantly. The purpose of this study was to record and maps the agarwood-planted trees in Indonesia as a baseline for future management of this species. T...

Agarwood plays an important role in gaining foreign exchange and as a source of income for people living in, around, and inside the forest of Indonesia. Its production has declined rapidly due to the lack of proven technology for its induction. If no serious action is taken now, agarwood production will not be sustainable in the future. Agarwood fo...

EFFECT OF PIPERONYL BUTOXIDE AND SILVER NITRATE ON DEGRADATION PATHWAYS OF N-OCTADECANE BY Fusarium sp. F092. The aliphatic fraction is usually the largest component in crude oil. Its removal from oil contaminated fields has become an environmental priority and been considered useful for enhancing environmental recovery. Our previous studies report...

Synthetic dyes are major raw material used in the textile industries, which generated about 40% of colored wastewater. The capacities of some fungi via enzymatic reaction to decolorize some dyes have been studied well, but less study in investigating immobilize cell of fungus to degrade the wastewater from textile industries. The objective of this...

p>Chrysene is a class of organic compounds, arranged in four benzene rings, and a polycyclic aromatic hydrocarbon (PAH), It has been found to have a variety of toxicity, mutagenicity, teratogenicity, and carcinogenicity on microorganisms, plants and animals in environment. Nowadays, the most attention on degradation of PAHs is investigating degrada...

This book described the endangered tree of Taxus sumatrana growing naturally in Indonesia from perspective of ecology, biochemistry, and silvicultural aspect, and also determining the appropriate conservation strategy of the species.

Synthetic dyes are widely used in many industries in which 40% waste from 700.000 tons/year dyes resulted more colored wastewater. In water, dyes with only < 1 ppm impedes the growth of microorganism and adversely affect to food chain and water treatments processes. Dyes are also highly resistant to degradation, toxically, and potentially carcinoge...

Textile industry contributes the most disposals of synthetic dyes, and about 40% of textile dyes has been generating high amount of colored wastewater. Polycyclic aromatic hydrocarbons (PAHs), such as phenanthrene, is a group of organic compounds, that structurally comprised of two or more benzene rings, which persist in air, water, and soil. The o...

Biodegradation of crude oil-A and -C, and n-octadecane, by the Fusarium sp. F092 was investigated under saline conditions. In liquid saline culture, less crude oil-C (56%) than crude oil-A (89%) was degrade, which was increased by the addition of optimum surfactant T80 (78%) or T40 (67%), or Mn2+ (67%). In sea sand contaminated with crude oil-C, th...

Degradation of 2,4,8-trichlorodibenzofuran (2,4,8-TCDF) by the isolate F0607, identified as belonging to the genus Cerrena, was investigated in liquid culture medium. Strain F0607 showed good decolonization and production of ligninolytic enzymes. The degradation of 2,4,8-TCDF per-unit biomass increased during the incubation period in presence of 1...

Sixty-two rotted wood and soil samples were used to screen for chrysene-degrading fungi. A strain of Fusarium, named F092, was identified as most capable of degrading chrysene. F092 was active under saline and nonsaline conditions, breaking down 48% of the chrysene in 30 d. The percentage of chrysene degraded did not change at 35‰ salinity with pH...

Polylactic acid (PLA)/kenaf composite is the latest alternative to wood. Research was conducted to determine the degradation of this bio-composite based on its material weight and mechanical properties change as well as physical form observed via visual and scanning electron microscopy. Analysis was also conducted on enzymatic activity, and degrada...

The biodegradation of hydrocarbons in crude oil under saline stress needs to be investigated because degradation was generally lack or slow, whereas crude oil or petroleum hydrocarbons are major pollutants of marine environments. A natural isolate, Fusarium sp. F092, having the ability to degrade chrysene was used to degrade the aliphatic fraction...

Uji asal sumber bibit nilam di Pasaman Barat, Sumatera Barat perlu dilakukan sebagai salah satu tahapan untuk meningkatkan produktivitas hasil panen dan minyak nilam. Penelitian ini dilakukan untuk menguji tiga asal sumber bibit nilam di Pasaman Barat, Sumatera Barat. Rancangan acak kelompok dilakukan pada penelitian dengan menguji tiga asal sumber...

Chrysene is low aqueous solubility and promote its accumulation in non-aqueous phase, as consequence become difficult for microbial degrader. As a polycyclic aromatic hydrocarbon (PAH), it is also an important compound consisting in crude oil. In this study, we focused on evaluating on chrysene and crude oil degradation by Fusarium sp. F092 under s...

Penelitian ini bertujuan untuk mendapatkan informasi tentang pertumbuhan dan kualitas fisik bibit meranti tembaga (Shorea leprosula Miq.) asal perbanyakan stek pucuk pada tiga tingkat umur. Penelitian dilakukan melalui pengamatan parameter pertumbuhan dan penilaian mutu fisik bibit meranti tembaga umur sebelas bulan setelah sapih (11 BSS), 12 BSS,...

Penelitian bertujuan untuk mengetahui pola dan aspek-aspek pemungutan rotan pada dua kelompok pemungut yaitu masyarakat biasa dan masyarakat adat/Kubu yang dikenal dengan sebutan Suku Kubu. Penelitian ini dilakukan dengan melakukan wawancara langsung dengan petani/kelompok tani pemungut/pengumpul. Pengujian faktor dominan dilakukan dengan metode ”o...

Permanenan harus mampu memproduksi kayu sesuai dengan target, ramah lingkungan, efektif dan efisien sehingga keuntungan perusahaan maksimal. Pelaksanaan sistem permanenan yang akan atau telah dilakukan dapat diukur tingkat efisiensinya melalui tiga indikator yaitu indeks tebang, indeks sarad dan indeks angkut. Penelitian ini bertujuan untuk mengeta...

Study of the effect of making undercut and back cut on the accuracy of tree felling direction and its effect on stump and technical wastes was conducted in plantation forest of Pulau Laut, South Kalimantan. Sampling trees were chosen purposively to the amount of 52 trees. Data on treefelling direction accuracy and the produced wastes were analyzed...