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Pengaruh Dosis Fosfor Dan Urin Sapi Terhadap Perkembangan Penyakit BBV (Busuk Batang Vanili) Dan Pertumbuhan Tanaman Vanili (Vanilla planifolia) Haryuni Haryuni; Teguh Supriyadi; Tyas Soemarah Kurnia Dewi; Endang Suprapti; Achmadi Priyatmojo; Alfiansyah Al Afghani Erping Sitompul
JURNAL ILMIAH AGRINECA Vol. 18 No. 1 (2018): JURNAL AGRINECA
Publisher : Fakultas Pertanian, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/afp.v18i1.655

This research aims to know the influence of dosing cow urine phosphorus and against foul disease progression stems vanilla (BBV) and growth of vanilla (Vanilla planifolia). The research method used a basic design with factorial Randomized Complete Design (RAL) consisted of two treatment factors 3 deuteronomy that is a dose of 6 g/phosphorus plant; a dose of phosphorus 9 g/plant; a dose of phosphorus 12 g/plant (named as P1; P2; P3). Cow urine dose treatment consists of 4 levels, namely without the cow urine dose treatment; cow urine dose 10 ml/plant; cow urine dose 20 ml/plant; cow urine dose 30 ml/plant (named as U1; U2; U3; and U4). There are 12 treatment combinations, each combination treatment is repeated as many as 3 times until there are 36 combinations of treatment. The results of this study show that treatment doses of phosphorus had no effect against the real parameters of intensity of attacks, number of leaves, plant height, the weight of the fresh root, root volume, and weight of the dried root but real effect against the length of the roots and the weight of the dry stover. Cow urine dose treatment very real effect against the intensity of the attacks, the weight of the dry stover and dried root weight but has no effect against a real high parameters of plants, number of leaves, fresh root weight, root volume, length of the root. The combination of the treatment effect is evident against the fresh root weight parameters and the weight of the dry stover but do not affect the real intensity of the attack against Fusarium oxysporum f. sp. vanillae cause foul stem of vanilla (BBV), plant height, the number of leaves, fresh stover, heavy volume root, root length, and weight of the dried root. The highest dry weight stover is shown by the P2U2 treatment of 7.5 g as well as the lowest indicated by P1U0 treatment of 3.1 g. Best treatment on the intensity of the attacks of Fusarium oxysporum f.sp. vanillae indicated by P1U0 of 16,67%.

Sekuen Internal Transcribed Spacer (ITS) DNA ribosomal Oncobasidium theobromae dan jamur sekerabat pembanding Internal Transcribed Spacer (ITS) sequences of ribosomal DNA Oncobasidium theobromae and other related fungi as comparison Agustin Sri MULYATNI; Achmadi PRIYATMOJO; Agus PURWANTARA
E-Journal Menara Perkebunan Vol 79, No 1: Juni 2011
Publisher : INDONESIAN RESEARCH INSTITUTE FOR BIOTECHNOLOGY AND BIOINDUSTRY

AbstractThe objective of this research was to sequence ITSregion from ribosomal DNA of Oncobasidium theobromae,and to compare the sequences to the isolates from Vietnamand Malaysia, and also to identify other related fungi speciesbased on the homology of the ITS region. O. theobromae wasisolated from three cocoa plantations in Indonesia that wereJember, Kendari, and Makasar. DNA was isolated from thefungal mycelia, and then amplified using ITS-4 and ITS-5primers, resulted in DNA fragments of 600 bp and 700 bpfor the isolate from Jember, 600 bp for the isolate fromKendari, and 700 bp for the isolate from Makasar. All of thefragments were successfully sequenced, except for 600 bpfragment of the isolate from Jember. The homology analysisusing BLAST was confirmed that ITS sequencesO. theobromae from Jember was homolog with Rhizoctoniasp. and Ceratobasidium sp., whereas isolate from Kendariwas homolog with Botryosphaeria sp. and isolate fromMakasar was homolog with Mycorrhizal basidiomycetes. Thesequences were then compared to the sequences ofO. theobromae from Vietnam and Malaysia. Phylogeneticanalyses using Clustal W program indicated thatO. theobrome from Indonesia which is represented byisolates from Jember showed higher degree of similarity toisolates from Vietnam. On the contrary, isolates fromIndonesia showed lower degree of similarity to isolates fromMalaysia.AbstrakPenelitian ini bertujuan untuk mengetahui sekuen daerahITS dari DNA ribosomal jamur Oncobasidium theobromae,dan membandingkannya dengan sekuen jamur O. theobromaeyang berasal dari Malaysia dan Vietnam, serta untukmengidentifikasi spesies lain yang merupakan kerabat dekatO. theobromae dengan berdasarkan kemiripan sekuenITSnya. Isolat jamur O. theobromae diisolasi dari tiga lokasiperkebunan kakao di Indonesia yaitu Jember, Kendari danMakasar. DNA diisolasi dari miselium jamur. Amplifikasidaerah ITS menggunakan primer ITS-4 dan ITS-5menghasilkan fragmen 600 bp dan 700 bp untuk isolatJember, 600 bp untuk isolat Kendari dan 700 bp untuk isolatMakasar. Semua fragmen berhasil disekuensing kecualifragmen Jember 600 bp. Analisis homologi menggunakanBLAST menunjukkan fragmen isolat Jember 700 bpmemiliki homologi tertinggi dengan Rhizoctonia sp. danCeratobasidium sp., isolat Kendari 600 bp homolog denganBotryosphaeria sp., dan isolat Makasar homolog denganMycorrhizal basidiomycetes. Hasil sekuen tersebut kemudiandibandingkan dengan sekuen daerah ITS O.theobromae dariMalaysia dan Vietnam untuk mengetahui hubungankekerabatannya. Analisis kekerabatan menggunakan programClustal W menunjukkan O. theobromae dari Indonesia yangdiwakili oleh isolat Jember berkerabat dekat dengan isolatVietnam, akan tetapi tidak dengan isolat Malaysia.

Characterization and Pathogenicity of Fusarium oxysporum as the Causal Agent of Fusarium Wilt in Chili (Capsicum annuum L.) REJEKI SITI FERNIAH; BUDI SETIADI DARYONO; RINA SRI KASIAMDARI; ACHMADI PRIYATMOJO
Microbiology Indonesia Vol. 8 No. 3 (2014): September 2014
Publisher : Indonesian Society for microbiology

Fusarium wilt is a serious disease attacking chili plants in Central Java which cause lost of chili productivity. Fusarium wilt is caused by pathogenic fungi Fusarium oxysporum, which is host specific. The objectives of this research were to characterize the pathogenic F. oxysporum as the causal agent of fusarium wilt in chili plants and to observe the virulence of the pathogen. Fungal pathogen was isolated from Tawangmangu as an endemic area of fusarium wilt in Central Java. The fungi was characterized morphologically and identified molecularly by its internal transcribed spacer regions (ITS regions). Pathogenicity test was done to observe the virulence of the pathogen. One pathogenic strain was isolated from Tawangmangu, Karanganyar and was identified Â morphologically and molecularly as F. oxysporum. Â

Effect of Biocontrol Agent (Bacillus and Mycorrhizal Fungi) Application against Twisted Disease (Fusarium spp.) in Off-Season Shallot Production Wibowo, Eko Prasetyo; Widiastuti, Ani; Joko, Tri; Suryanti, Suryanti; Priyatmojo, Achmadi
Jurnal Perlindungan Tanaman Indonesia Vol 26, No 2 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.75579

The demand for shallots has increased along with the Indonesian population. To achieve shallot production goals, farmers began to plant shallots outside usual planting season. However, unfavourable environmental conditions and pest attacks are obstacles faced by farmers. The use of Biological Control Agents (BCA) is a way to improve plant growth and protect plants against plant pathogens or even abiotic stresses. The purpose of this study was to evaluate the response of shallot plants after BCA (Bacillus and Mycorrhizal Fungi) application, especially against twisted disease during off-planting season. This research was conducted by preparing BCA isolates, applying BCA, measuring disease incidence and intensity, observing plant growth development, analyzing phenol content, and analyzing phosphate content. Results showed BCA Bacillus and mycorrhizal fungi did not inhibit Fusarium spp. infection. Agronomic measurements showed no significant difference in crown weight and root weight, but isolate B8 significantly increase the number of leaves while isolate M significantly decreased plant height. Isolates B6, B7, and M significantly reduced the total phenol content in shallot plants. Phosphate analysis on isolate M did not have significant effects on shallot plants, while BCA Bacillus and Mycorrhizal fungi application could not suppress twisted disease. Nevertheless, B8 treatment has the potential to increase shallot growth; therefore, further research must be conducted.

Penyakit Busuk Akar dan Pangkal Batang Tebu di Sumatera Selatan Maryono, Tri; Widiastuti, Ani; Priyatmojo, Achmadi
Jurnal Fitopatologi Indonesia Vol. 13 No. 2 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Root and basal stem rot disease caused by Xylaria sp. is a new diseases in Indonesian sugarcane plantation. The disease has been reported only occurred in sugarcane plantations in Sumatera. Limited information about the disease has slowed down disease diagnosis in the field. The research was aimed to describe symptoms, signs, and spatial distribution of the disease caused by Xylaria. A survey was conducted at a sugarcane plantation in South Sumatera (3° 26’ 16.6” S dan 104°40’ 09.8” E). Typical symptoms of the disease involved drying of all leaves and plant death, dry rot of root and basal stem, and retarded growth of ratoon cane were recorded. Stroma was found on surface of diseased stems and on soil surface of diseased plants, and spatial aggregation of diseased plants was observed in all locations. The distribution of the diseased plant aggregately and the presence of stroma on diseased plants are important characteristics of the disease diagnosis in sugarcane plantations.

Sekuen Internal Transcribed Spacer (ITS) DNA ribosomal Oncobasidium theobromae dan jamur sekerabat pembanding Internal Transcribed Spacer (ITS) sequences of ribosomal DNA Oncobasidium theobromae and other related fungi as comparison Agustin Sri MULYATNI; Achmadi PRIYATMOJO; Agus PURWANTARA
Menara Perkebunan Vol. 79 No. 1: 79 (1), 2011
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v79i1.75

AbstractThe objective of this research was to sequence ITSregion from ribosomal DNA of Oncobasidium theobromae,and to compare the sequences to the isolates from Vietnamand Malaysia, and also to identify other related fungi speciesbased on the homology of the ITS region. O. theobromae wasisolated from three cocoa plantations in Indonesia that wereJember, Kendari, and Makasar. DNA was isolated from thefungal mycelia, and then amplified using ITS-4 and ITS-5primers, resulted in DNA fragments of 600 bp and 700 bpfor the isolate from Jember, 600 bp for the isolate fromKendari, and 700 bp for the isolate from Makasar. All of thefragments were successfully sequenced, except for 600 bpfragment of the isolate from Jember. The homology analysisusing BLAST was confirmed that ITS sequencesO. theobromae from Jember was homolog with Rhizoctoniasp. and Ceratobasidium sp., whereas isolate from Kendariwas homolog with Botryosphaeria sp. and isolate fromMakasar was homolog with Mycorrhizal basidiomycetes. Thesequences were then compared to the sequences ofO. theobromae from Vietnam and Malaysia. Phylogeneticanalyses using Clustal W program indicated thatO. theobrome from Indonesia which is represented byisolates from Jember showed higher degree of similarity toisolates from Vietnam. On the contrary, isolates fromIndonesia showed lower degree of similarity to isolates fromMalaysia.AbstrakPenelitian ini bertujuan untuk mengetahui sekuen daerahITS dari DNA ribosomal jamur Oncobasidium theobromae,dan membandingkannya dengan sekuen jamur O. theobromaeyang berasal dari Malaysia dan Vietnam, serta untukmengidentifikasi spesies lain yang merupakan kerabat dekatO. theobromae dengan berdasarkan kemiripan sekuenITSnya. Isolat jamur O. theobromae diisolasi dari tiga lokasiperkebunan kakao di Indonesia yaitu Jember, Kendari danMakasar. DNA diisolasi dari miselium jamur. Amplifikasidaerah ITS menggunakan primer ITS-4 dan ITS-5menghasilkan fragmen 600 bp dan 700 bp untuk isolatJember, 600 bp untuk isolat Kendari dan 700 bp untuk isolatMakasar. Semua fragmen berhasil disekuensing kecualifragmen Jember 600 bp. Analisis homologi menggunakanBLAST menunjukkan fragmen isolat Jember 700 bpmemiliki homologi tertinggi dengan Rhizoctonia sp. danCeratobasidium sp., isolat Kendari 600 bp homolog denganBotryosphaeria sp., dan isolat Makasar homolog denganMycorrhizal basidiomycetes. Hasil sekuen tersebut kemudiandibandingkan dengan sekuen daerah ITS O.theobromae dariMalaysia dan Vietnam untuk mengetahui hubungankekerabatannya. Analisis kekerabatan menggunakan programClustal W menunjukkan O. theobromae dari Indonesia yangdiwakili oleh isolat Jember berkerabat dekat dengan isolatVietnam, akan tetapi tidak dengan isolat Malaysia.

VIRULENSI 9 ISOLAT FUSARIUM OXYSPORUM F.SP. LYCOPERSICI DAN PERKEMBANGAN GEJALA LAYU FUSARIUM PADA DUA VARIETAS TOMAT DI RUMAH KACA Ambar, Abdul Azis; Priyatmojo, Achmadi; Hadisutrisno, Bambang; Pusposendjojo, Nursamsi
Agrin Vol 14, No 2 (2010): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2010.14.2.104

Penyakit layu fusarium disebabkan oleh Fusarium oxysporum f.sp. lycopersici (Fol), merupakan penyakitpenting tomat. Penelitian ini bertujuan mengetahui tingkat virulensi Fusarium oxysporum f.sp. lycopersici darilokasi berbeda pada varietas Roma dan Money Maker, dan perkembangan penyakit layu fusarium di rumahkaca. Penelitian ini menggunakan suspensi Fol hasil monospora (1 x 107 konidium/ml air steril) dan tomat yangberumur 4 minggu. Akar direndam dalam suspensi Fol selama 30 menit, kemudian di tanam dalam pot yangtelah berisi campuran tanah dan pupuk. Hasil uji virulensi Fol isolat (A1) dan (A2) memperlihatkan virulensitinggi pada 2 varietas tomat yaitu (78%; 75%) untuk Roma dan (92%; 85%) untuk Money Maker. Keduaperlakuan tersebut berbeda nyata dengan kontrol. Rata-rata virulensi isolat Fol pada varietas Roma lebih rendah(< 50%) dibanding varietas Money Maker (> 50%). Hasil ini mengindikasikan bahwa varietas Roma lebih tahandibanding varietas Money Maker. Hasil pengamatan untuk perkembangan gejala layu fusarium di rumah kacaberupa menguningnya kotiledon kemudian kotiledon layu, diikuti mengeringnya ujung daun pertama. Gejalaberlanjut, mengering sampai gugurnya kotiledon yang diiringi dengan awal menguningnya daun, semua ujungdaun kering dan daun menguning, dan akhirnya daun layu. Gejala lain tampak dari penelitian adalah pengerdilantanaman pada kedua varietas.Kata kunci: virulensi fol, perkembangan gejala layu, varietas tomatÂ ABSTRACTFusarium wilt diseases caused by Fusarium oxysporum f.sp. lycopersici (Fol) as important diseases ontomato. The aim of research was to know the levef of Fol virulence from 9 different origin (Centra Java, SouthSulawesi, and DI. Yogyakarta) and development of fusarium wilt diseases in green house. Monosporic colonysuspension (1x 107 conidia/ml) are used in this research. The test of virulence by pouring the monosporicsuspension of Fol isolates for 30 minutes on both varieties Roma and Money Maker were 4 weeks old. The resultshowed that A1 and A2 isolates more severity (78% and75% on Roma variety) and (92% and 85% on MoneyMaker variety) than other isolates. Amount of virulence showed Roma variety (< 50%) lower than MoneyMaker variety (> 50%). This result indicated that Roma variety more resistant than Money Maker variety. Theobservation of fusarium wilt development showed that early symptom of yellow â€“ wilt cotyledont followed withdry of leaf tip. By the time, development of symptom was cotyledon senesence to followed yellow of leaf and theend wilt. The other symptom was inhibition of plant growth on tomato.Key words: fol virulency, development of wilt symptom, tomato variety

Deciphering the signature of seedborne fungi linked to rice sheath rot disease: insights from ITS rDNA sequencing analysis Hoerussalam, Hoerussalam; Afifuddin, Ahmad; Lathif, Yudrik; Widiastuti, Ani; Putra, Eka Tarwaca Susila; Priyatmojo, Achmadi
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.126165-179

Sarocladium oryzae and Fusarium spp. are the causal agents of sheath rot, a re-emerging rice disease that has recently gained importance in Indonesia and can cause yield losses of up to 85%. Both pathogens are seedborne, making their accurate identification and management essential. Conventional morphological identification is time-consuming and often inaccurate due to overlapping symptoms among fungal species. In this study, we demonstrated the seedborne transmission of sheath rot pathogens and provided novel insights by highlighting the predominance of F. equiseti and the detection of infections in asymptomatic seeds. A total of 75 fungal isolates were obtained from rice leaf sheaths, seeds, and harvested grains across CMS, inbred, and hybrid rice varieties. ITS rDNA sequencing identified 42 isolates as S. oryzae and 33 as Fusarium spp., including F. equiseti (29), F. incarnatum (1), and F. proliferatum (3). The detection of these pathogens in both pre-planting seed samples and post-harvest grains demonstrates their ability to spread through seeds. Importantly, their presence in asymptomatic seeds and grains indicates that routine visual inspection is insufficient for seed health monitoring.

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