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Jurnal Fitopatologi Indonesia

jfiti
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Published by Institut Pertanian Bogor

ISSN : 02157950 EISSN : 23392479 DOI : -

Core Subject : Health,

Medicine & Pharmacology

Jurnal Fitopatologi Indonesia (JFI) is an official publication owned by the Indonesian Phytopathology Society (Perhimpunan Fitopatologi Indonesia). In 2010, JFI management was given to PFI Komda Bogor. Since then, JFI has been published 6 times (January, March, May, July, September, and November).

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Articles 412 Documents

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Uji In Vitro Asap Cair terhadap Ralstonia syzygii subsp. celebesensis Penyebab Penyakit Darah pada Pisang Aisyah Imas; Giyanto Giyanto; Meity Suradji Sinaga; Abdjad Asih Nawangsih; Gustan Pari
Jurnal Fitopatologi Indonesia Vol 14 No 4 (2018)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

In Vitro Test of Liquid Smoke against Ralstonia syzygii subsp. Celebesensis, the Cause of Blood Disease in Bananas Blood disease, caused by Ralstonia syzygii subsp. celebesensis, is an important disease of banana plants in Indonesia. Several control methods have been done, but the result were not effective. Liquid smoke from wood waste is reported to be antimicrobial, but its use for controlling R. syzygii subsp. celebesensis has never been reported. Research was conducted to examine the ability of liquid smoke produced from coconut shell (CS-LS), pinecone (P-LS), and oil palm branch (OPB-LS) in inhibiting the growth of R. syzygii subsp. celebensensis in vitro and its effect on bacterial cell morphology. Efficacy test of liquid smoke was carried out by agar diffusion method and measurement of bacterial density by spectrophotometry with ʎ 600 nm. Observation of bacterial cell morphology was carried out by electron microscopy. The CS-LS, P-LS, and OPB-LS starting from 0.5% concentration showed inhibitory activity against R. syzygii subsp. celebesensis both on triphenyl tetrazolium chloride medium and luria bertani broth. Liquid smoke also caused damage to cell walls and cell membranes. Therefore, liquid smoke has the potential to be used as component in control method for R. syzygii subsp. celebesensis.

Eksplorasi dan Karakterisasi Bakteri Agens Hayati dari Imperata cylindrica untuk pengendalian Rigidoporus microporus Tatit Sastrini; Mochamad Yadi Nurjayadi; abdul munif
Jurnal Fitopatologi Indonesia Vol 15 No 2 (2019)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Exploration and Characterization of Biological Agents Bacteria from Imperata cylindrica for Controlling Rigidoporus microporusWhite root disease caused by Rigidoporus microporus is an important disease in rubber plantation. This pathogen causes damage to roots, thus adversely affect plant growth and productivity of rubber plantation. Therefore controling of this pathogen is important to do. The objective of this research was to obtain biological agents bacteria from the various parts of alang-alang (Imperata cylindrica) which have inhibitory activity against the growth of R. microporus The research was conducted through exploration of biological agents from the various parts of alang-alang, antibiosis activity test, and characterization of potential isolates. Based on antibiosis activity test, seven isolates (Rph 7, Rph 8, Rph 15 Rph 17, 15, E47, and isolate 47) showed antibiosis activity against R. microporus. Suppression activity of R. microporus growth by seventh of potential isolates ranged between 26.7-58.9%. The highest inhibition was demonstrated by isolate 47 suspected leaf endophytic bacteria. Seventh of potential isolates are Gram-positive bacterial that can form spores. The biological agen’s bacterial dominated by isolates from the reeds rhizosphere. This result indicates that rhizosphere is a potentialy source in the exploration of biological agents. In addition, R. microporus is a soil-borne pathogen which colonizes the roots therefore exploration from rhizosphere samples allows obtaining potential biological agents.

Deteksi dan Identifikasi Ditylenchus dipsaci dari Umbi Bawang Putih Impor Elmi Muliya; Supramana Supramana; Giyanto Giyanto
Jurnal Fitopatologi Indonesia Vol 14 No 6 (2018)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Detection and Identification of Ditylenchus dipsaci from Imported Garlic BulbsImportation rate of garlic (Allium sativum) increased significantly in Indonesia lately. This situation may lead to the introduction and spread of quarantine pests, one of them is bulbborne nematode Ditylenchus dipsaci. This research is aimed to detect and identify the presence of D. dipsaci on imported garlic bulb from China. Samples of garlic bulbs were taken from imported garlic through Tanjung Priok Sea Port, North Jakarta, within importation period from August to December 2017. Nematode extraction was performed by modified Baermann funnel method. Nematode identification was carried out based on the D. dipsaci key morphological characters and morphometry according to de Man formula. This nematode was successfully detected from 20% of garlic bulbs samples based on morphological characteristics, i.e. slender body shape, body length between 0.56 until 1 mm, well-defined stylet (10-13 mm in length), posterior valve between oesophagus and intestine is not overlapping, median bulb obvious with oval shape, and the tail was conoid with a pointed terminus. The findings of D. dipsaci is an important fact because these nematodes have the potential to cause damage to plants in the field.

Karakteristik morfologi dan sebaran tipe kawin Phytophthora capsici asal lada di Pulau Jawa Bahru Rohmah; Bambang Hadisutrisno; Dyah Manohara; Achmadi Priyatmojo
Jurnal Fitopatologi Indonesia Vol 14 No 5 (2018)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Morphology characters and mating types distribution of Phytophthora capsici from black pepper in Java IslandPepper (Piper nigrum) is one of the most important spice crops in Indonesia. Recently its production declining due to infection of foot rot disease caused by Phytophthora capsici. This pathogen has two different mating types, namely A1 and A2, in which the presence of opposite two mating types is important for sexual reproduction and formation of oospores. The movement of pepper seedling from one area to another is highly facilitated alteration of mating type distribution map of P. capsici. The objectives of this research were to determine the morphological characteristics and the spread of mating types of P. capsici in Java. Morphology characters of P. capsici isolates were indicated by variation in sporangial size and shape, as well as types of colony appearance. The length (l) and width (w) of sporangium were in the range of 15.1–76.2 µm and 9.8–44.8 µm, respectively; while the l/w ratio was 1.12–2.27. Mating type assay showed that A2 type was more dominantly found than A1 type. This study found two different mating types present in the same area, i.e. Regency of Pacitan (East Java) and Regency of Sleman (Special Region of Yogyakarta). The findings of this research suggested that it is required more strict control strategy on the mobilization of black pepper seedling particularly in the area where the certain mating type is not found yet so that the emergence of new more virulent genotype of pathogen can be prevented.

Sclerotium rolfsii, Penyebab Penyakit Busuk Pangkal Batang pada Hippeastrum sp. Antok Wahyu Sektiono; Syamsuddin Djauhari; Putri Devinta Pertiwi
Jurnal Fitopatologi Indonesia Vol 15 No 2 (2019)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Sclerotium rolfsii, a the Causal Agent of Stem Rot Disease on Hippeastrum sp.Symptoms of stem rot that cause Hippeastrum sp. or red lily wither, leaves turn yellow, and eventually die found at Mangliawan Village, District of Pakis, Malang - East Java. The purpose of this study was to identify the pathogens that cause root rot disease on lily plants and find out their host range. Sclerotium from the symptomatic base of the plant was isolated on potato dextrose agar medium. Fungus was identified based on the morphological characteristics of the colonies and mycelium. Host range test of pathogen was carried out by manual inoculation on Rain lily (Zephyranthes) St. Bernard's lily (Chlorophytum) and Beach Spider lily (Hymenocallis). The results of the identification showed that the fungus had white mycelium and formed sclerotium. Sclerotium is irregularly rounded, white when young, and dark brown when ripe, and forms 10 days after incubation. In hyphae, there are branching, septa, and clam connections. Based on the morphological characteristics of the disease the fungus was identified as Sclerotium rolfsii. In the host range test, the fungus was able to infect rain lilies and paris lilies, but not in spider lilies. This is the first report of S. rolfsii infection in lily in Indonesia.

Cover Jurnal Fitopatologi Vol. 13 No. 6, November 2017 Editor Jurnal Fitopatologi Indonesia
Jurnal Fitopatologi Indonesia Vol. 13 No. 6 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (761.949 KB)

DOI: https://doi.org/10.14692/jfi.13.6.i

Aplikasi Gelombang Mikro sebagai Pengendali Cendawan Patogen Terbawa Benih Kedelai Raden Sujayadi; Supyani Supyani; Edi Purwanto
Jurnal Fitopatologi Indonesia Vol. 13 No. 6 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

One of the obstacles in providing high quality soybean (Glycine max) seed is the infection of seed-borne fungal pathogens. Micro wave treatment is one of the alternative methods to control the seed-borne pathogens effectively but it needs to be further developed. This research consisted of two stages. The first stage was aimed to determine the best soybean seed moisture content in maintaining seed physiological quality after exposing to micro wave. The second stage was aimed to determine the most effective duration of micro wave exposure to reduce the rate of infection of seed-borne fungal pathogens using the best moisture content resulted from the first stage. The experiment on seed moisture indicated that 9.20% was the best seed moisture content in maintaining the physiological quality when the seed was exposed to micro wave. Furthermore, micro wave exposure of 60 seconds was able to control Aspergillus flavus, while the exposure of 80 seconds was able to control Fusarium sp., Curvularia sp., and A. niger.

Pengaruh Elektroterapi dan Termoterapi secara in Vitro terhadap Eliminasi Onion yellow dwarf virus Siti Shofiya Nasution; Diny Dinarti; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol. 13 No. 6 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Infection of Onion yellow dwarf virus (OYDV) are reported causing problems in garlic production. Planting virus-free bulbs might help reduce viral disease incidence in the field. This research was aimed to develop method for eliminating OYDV from garlic bulbs using combination of electrotherapy (0, 5, 10, 15, and 20 mA each for 10 minutes) and thermotherapy (23, 28, 33, 38°C each for 4 weeks). Two garlic cultivars, i.e. Sangga Sembalun and Lumbu Hijau were used as seed bulbs for OYDV elimination tests. Virus infection was confirmed using transcription-polymerase chain reaction (RT-PCR). The result showed that thermotherapy at 33 °Cwas the best method to eliminate OYDV in garlic although the efficiency was not the same for all cultivars. The efficiency reached up to 60% for cv. Lumbu Hijau, whereas for cv. Sangga Sembalun only reached up to 40%. Electrotherapy alone or in combination with thermotherapy were not able to produce OYDV-free plantlets.

Asam Salisilat sebagai Penginduksi Ketahanan Tanaman Padi terhadap Penyakit Hawar Daun Bakteri Christoffol Leiwakabessy; Meity Suradji Sinaga; Kikin Hamzah Mutaqin; Trikoesoemaningtyas Trikoesoemaningtyas; Giyanto Giyanto
Jurnal Fitopatologi Indonesia Vol. 13 No. 6 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

The use of salicylic acid as resistance inducers agents in several plants species was well known. Salicylic acid has been believed to play an important role in inducing resistance against some pathogen. This research was aimed to study the role and effectiveness of salicylic acid as inducers for the resistance of some rice variety against bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae. The experiment was arranged in completely randomized factorial design with three factors i.e. rice variety, salicylic acid, and pathotypes, each treatment was replicated three times. The results showed that salicylic acid could prolong the latent period of X. oryzae pv. oryzae pathotypes IV and VIII in paddy rice varieties Conde and Ciherang, induce the resistance of rice varieties as well as reducing the rate of infection of the two mentioned pathotypes. Salicylic acid was also able to induce the resistance of Conde and Ciherang varieties in order to suppress area under disease progress curve (AUDPC) of X. oryzae pv. oryzae pathotypes IV and VIII.

Keanekaragaman dan Patogenisitas Fusarium spp. Asal Beberapa Kultivar Pisang Widya Sari; Suryo Wiyono; Ali Nurmansyah; Abdul Munif; Roedhy Poerwanto
Jurnal Fitopatologi Indonesia Vol. 13 No. 6 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Fusarium wilt disease caused by pathogenic fungus F. oxysporum f. sp. cubense is an important disease in banana plants. This research was aimed to identifiy Fusarium spp. collected from banana plants showing wilt disease based on morphology and molecular characters. The fungi isolates obtained was further examined for its pathogenicity and distribution in various parts of banana plants. Based on morphological characters, i.e. growth rate, total conidia, colony color, macroconidium, microconidium, and chlamydospores, F. oxysporum f. sp. cubense can be differentiated from other species of Fusarium, but not the strain. Molecular analysis using specific primers VCG 01213/16 and Foc1/Foc 2 successfully identified 13 and 7 isolates of F. oxysporum f. sp. cubense TR4 and F. oxysporum f. sp. cubense non TR4, respectively. Analysis using universal primer ITS4/ITS5 identified 7 isolates of F. solani, 1 isolate of F. verticillioides, and 2 isolates non Fusarium. Infection of F. oxysporum f. sp. cubense TR4 and non-TR4 were found mostly in pseudo stems, whereas F. solani and F. verticillioides dominantly colonized banana corm. Pathogenicity test showed that F. oxysporum f. sp. cubense TR4 and non-TR4 caused necrosis on corm of cv. Ambon Kuning. Similar necrosis symptom was also observed on infection of F. solani but with less severity.

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