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All Journal HAYATI Journal of Biosciences Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Microbiology Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Biogenesis: Jurnal Ilmiah Biologi Jurnal Hortikultura AGRIVITA, Journal of Agricultural Science Indonesian Journal of Biotechnology JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Entomologi Indonesia Makara Journal of Science

Abdjad Asih Nawangsih

Department Of Plant Protections, Faculty Of Agriculture, Institut Pertanian Bogor, Jalan Agatis Kampus Dramaga Bogor 16680, Indonesia

Author-ID : 217688

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Veterinary

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Pemanfaatan Mulsa Jerami dan Plant Growth Promoting Rhizobacteria untuk Menekan Penyakit Pustul Bakteri pada Tanaman Kedelai Tita Widjayanti; Abdjad Asih Nawangsih; Kikin Hamzah Mutaqin
Jurnal Fitopatologi Indonesia Vol 8 No 6 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bacterial pustule caused by Xanthomonas axonopodis pv. glycines is one of important bacterial diseases of soybean in Indonesia. The development of alternative control of the disease is required to support integrated diseases management for sustainable agriculture. This research was conducted to observe the effect of straw mulch and plant growth promoting Rhizobacteria (PGPR) on the incidence of bacterial pustule disease on two soybean varieties in the farmer field at Cigombong, Sukabumi, West Java. The result of this research showed that all of the factors as combinations did not significantly affect the value of total area under disease progress curve (AUDPC) of bacterial pustule. Factor that significantly affected the values of AUDPC was soybean varieties. Gepak Kuning variety has lowest AUDPC value compared to Anjasmoro variety. In addition, combination of Gepak Kuning variety and straw mulch showed significantly different effect on AUDPC value. Therefore, this treatment combination should be recommended for the farmers.Key word: PGPR, soybean variety, straw mulch, Xanthomonas axonopodis pv. glycines

Keefektifan Bakteri Endofit dan Bakteri Perakaran Pemacu Pertumbuhan Tanaman dalam Menekan Penyakit Layu Bakteri pada Tomat Zhenita Vinda Tri Handini; Abdjad Asih Nawangsih
Jurnal Fitopatologi Indonesia Vol 10 No 2 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bacterial wilt disease caused by Ralstonia solanacearum is an important disease on tomato. Endophytic bacteria and plant growth promoting rhizobacteria has been reported as potential biocontrol agent for many plant diseases. Research was conducted to determine the effectiveness of some isolates of endophytic bacteria (BC10, Bacillus amyloliquefaciens, dan Staphylococcus epidermidis BC4) and plant growth promoting rhizobacteria (Pseudomonas fluorescence RH4003, Bacillus subtilis AB89) as biocontrol agents for tomato wilt disease. Bacterial isolates was applied as soil drench on tomato seedling in single or combination treatments. Combination of P. fluorescens RH4003 and isolate BC10 (F1*BC10) enhanced the highest plant height, although plant dry mass among treatments was not significantly different. Single application of S. epidermidis BC4 was significantly suppressed disease incidence.

Interaksi antara Bakteri Endofit dan Bakteri Perakaran Pemacu Pertumbuhan Tanaman dalam Menekan Penyakit Layu Bakteri pada Tomat Abdjad Asih Nawangsih; Fitri Fatma Wardani
Jurnal Fitopatologi Indonesia Vol 10 No 5 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

One of the factors affected production of tomato is the incidence of bacterial wilt disease caused by Ralstonia solanacearum. An alternative control to manage the disease which is environmentally friendly is the use of biocontrol agents. Application of endophytic bacteria (Staphylococcus epidermidis BC4) and plant growth promoting rhizobacteria (Pseudomonas fluorescens RH4003 and Bacillus subtilis AB89) as biocontrol of tomato bacterial wilt was expected to be an alternative method. The objective of this study is to evaluate the interaction among endophytic bacteria and PGPR to suppress the development of bacterial wilt disease (R. solanacearum) and promoting the growth of tomato. Bacterial treatment which caused the highest suppression on disease incidence was single application of P. fluorescens RH4003. Disease index caused by S. epidermidis BC4 and P. fluorescens RH4003 applied individually was up to 41.18 dan 45.88%, respectively. Interaction between the endophytic bacteria and both of the PGPRs were antagonistic.

Deteksi dan Identifikasi Dickeya sp. sebagai Organisme Pengganggu Tumbuhan Karantina A2 pada Tanaman Kentang di Jawa Haerani Haerani; Abdjad Asih Nawangsih; Tri Asmira Damayanti
Jurnal Fitopatologi Indonesia Vol 11 No 4 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Erwinia chrysanthemi (currently Dickeya sp.) is one of the A2 quarantine pest that must be concerned of its distribution on potato in Indonesia. The aim of this study is to detect and identify E. chrysanthemi from potato in Java. A total of 400 samples of potato plants showing symptoms of soft rot were obtained from several potato areas in Pangalengan and Garut (West Java), Dieng (Central Java), and Batu-Malang (East Java). Disease incidence was determined by indirect enzyme-linked immunosorbent assay (I-ELISA) using polyclonal antiserum. E.chrysanthemi was isolated from plant samples with positive ELISA results. Furthermore, bacterial isolates were characterized by GEN III OmniLog ID System and PCR using specific primers Ec3F/Ec4R, as well as the universal 16S rRNA primer pair of 27F/1429R. The incidence of E. chrysanthemi based on ELISA was obtained. Based on physiological characters; Gram, catalase, oxidase, and oxidation-fermentation, there were 4 isolates similar to the genus of Erwinia. However, the results of Gen III OmniLog System, PCR, and nucleotide sequences analysis of 16S rRNA confirmed that none of the isolates were identified as E.chrysanthemi. Otherwise, those 4 isolates were identified as Pseudomonas oryzihabitans, Pantoea agglomerans, and Pseudomonas viridiflava. The result of this study indicated that the existence of E. chrysanthemi as an A2 quarantine pest on potato in Java can not be confirmed and remains as an A1 quarantine pest.

Bakteri Endofit asal Tanaman Tembakau sebagai Agens Pengendali Meloidogyne spp. isnainy dinul Mursyalatiyus; Abdul Munif; Abdjad Asih Nawangsih
Jurnal Fitopatologi Indonesia Vol 14 No 6 (2018)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Endophytic Bacteria from Tobacco Plant as Biocontrol Agent of Meloidogyne spp.Soilborne disease on tobacco plants caused by fungal and bacterial infection in association with root-knot nematode (Meloidogyne spp.) may cause significant yield loss. Endophytic bacteria have been recognized as biological control agent for Meloidogyne spp. as well as plant promoting growth agent. Research was conducted to evaluate endophytic bacteria isolated from tobacco plants as biological control agent for Meloidogyne spp. infecting tobacco. A total of 215 isolates of endophytic bacteria were isolated from root of two tobacco varieties, Kemloko and Prancak 95. Biosafety screening showed that 80 isolates (37%) and 7 isolates (8%) gave negative reaction on hypersensitivity test and hemolysis test, respectively. Seven isolates i.e. TPT3.10, TPT2.1, TK3n8, TK2t21, TK2n8, TK3n1 and TK2t11 were able to promote plant growth and increase the mortality of juvenile Meloidogyne spp. Physiological characterization of endophytic bacteria showed that most of the isolates were able to produce protease enzyme, phosphate, nitrogen and HCN. The same isolates were also able to suppress the number of galls from 80.09% up to 93.82%. Two isolates, TPT3.10 and TK2n8, are considered having the best suppression on root gall formation.

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.

Asap Cair Sebagai Pemacu Pertumbuhan dan Ketahanan Tanaman Pisang terhadap Ralstonia syzygii subsp. celebesensis Muhammad Evan Nurrahmawan; Giyanto; Abdjad Asih Nawangsih; Erina Sulistiani
Jurnal Fitopatologi Indonesia Vol 17 No 5 (2021)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.17.5.183-194

Bibit pisang hasil kultur jaringan diketahui rentan terhadap cekaman pada awal pertumbuhan di lapangan. Pra-pengondisian bibit menggunakan agens priming dilaporkan meningkatkan pertumbuhan dan ketahanan tanaman. Asap cair tempurung kelapa dilaporkan mampu memacu pertumbuhan dan menginduksi ketahanan tanaman. Penelitian ini bertujuan mendapatkan informasi pengaruh asap cair asal tempurung kelapa terhadap pertumbuhan dan aktivitas enzim ketahanan pada plantlet pisang Cavendish pada fase induksi perakaran serta penekanan R. syzygii subsp. celebesensis secara in vitro. Tahapan penelitian mencakup uji fitotoksisitas asap cair, analisis pertumbuhan plantlet, analisis aktivitas enzim peroksidase dan polifenol oksidase, isolasi R. syzygii subsp. celebesensis, dan uji toksisitas asap cair terhadap R. syzygii subsp. celebesensis secara in vitro. Hasil penelitian menunjukkan perlakuan asap cair pada konsentrasi ≥ 1.5% bersifat fitotoksik dengan gejala meliputi klorosis, nekrosis, terbentuk lendir dan kematian plantlet. Perlakuan asap cair pada konsentrasi ≤ 1% tidak bersifat fitotoksik, bahkan peningkatan pertumbuhan plantlet optimum ditunjukkan pada perlakuan asap cair 0.1%. Perlakuan asap cair menyebabkan peningkatan aktivitas enzim ketahanan pada 2, 4 dan 6 hari setelah tanam (HST), tetapi menurun pada 30 HST. Selain itu, asap cair bersifat antibakteri melalui terbentuknya zona hambat dan menyebabkan penurunan nilai kerapatan sel R. syzygii subsp. celebesensis. Penelitian ini menunjukkan potensi teknik priming untuk pengendalian penyakit darah pisang terutama pada bibit pisang hasil kultur jaringan.

Screening of Liliaceae Rhizosphere Actinomycetes as Biological Control Agents of Fusarium oxysporum f. sp. cepae Eka Wijayanti; Abdjad Asih Nawangsih; Efi Toding Tondok
Jurnal Fitopatologi Indonesia Vol 17 No 6 (2021)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.17.6.225-232

Penyakit moler yang disebabkan oleh Fusarium oxysporum f. sp. cepae merupakan salah satu penyakit penting pada tanaman bawang merah. Aktinomiset memiliki potensi sebagai agens pengendali hayati F. oxysporum f. sp. cepae karena kemampuannya dalam memproduksi senyawa bioaktif. Penelitian ini bertujuan mengevaluasi dan menyeleksi isolat-isolat aktinomiset yang dapat menekan pertumbuhan F. oxysporum f. sp. cepae dan memacu pertumbuhan tanaman bawang merah. Penelitian dibagi menjadi empat tahap, yaitu: isolasi, seleksi, karakterisasi, dan identifikasi isolat aktinomiset yang potensial. Sebanyak 43 isolat berhasil diisolasi dari tanaman Liliaceae dan sebanyak 14 isolat berhasil diseleksi berdasarkan hasil uji keamanan hayati. Hasil uji antagonisme menunjukkan bahwa 14 isolat menghasilkan penghambatan terhadap F. oxysporum f. sp. cepae sebesar 3.67%–53.67%. Di antara 14 isolat tersebut, sebanyak 13 isolat mampu memproduksi enzim kitinase dengan indeks kitinolitik sebesar 0.31–1.38. Lima isolat terpilih yaitu: ABF42, ABF59, ACF45, AEF35, dan AEF45, mampu melarutkan fosfat dan memproduksi IAA dengan konsentrasi 24.82–82.88 ppm, namun hanya tiga isolat yang mampu memfiksasi nitrogen. Berdasarkan sikuen gen 16S rRNA, lima isolat tersebut berturut-turut teridentifikasi sebagai: Streptomyces rameus, S. lydicus, S. panaciradicis, S. seoulensis, dan S. fuscichromogenes.

Potential of the Endophytic Bacteria from Lantana camara, Palm Oil, and Mangroves to control Meloidogyne spp. on Eggplant Siti Zulaiha; Abdul Munif; Abdjad Asih Nawangsih
Jurnal Fitopatologi Indonesia Vol. 18 No. 5 (2022): September 2022
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.18.5.213-221

Nematoda puru akar (NPA) Meloidogyne spp. merupakan salah satu patogen penting pada tanaman terung. Puru akar sangat merugikan karena menurunkan hasil produksi. Penelitian ini bertujuan mendapatkan bakteri endofit dari Lantana camara dan mengevaluasinya bersama bakteri endofit dari akar kelapa sawit, dan mangrove yang berpotensi untuk mengendalikan Meloidogyne spp. dan menentukan pengaruhnya pada pertumbuhan tanaman terung, serta mengidentifikasi bakteri endofit yang potensial sebagai agens pengendalian hayati. Potensi agens hayati mengacu pada hasil pengujian uji mortalitas, uji senyawa organik volatil (SOV) dan uji penekanan puru akar dievaluasi dengan mengukur persentase penurunan jumlah puru, kerusakan akar, dan jumlah paket telur. Hasil uji menunjukkan seluruh isolat bakteri endofit berpotensi menyebabkan mortalitas, menghasilkan SOV, dan dapat menekan persentase jumlah puru pada akar, serta memberikan pengaruh terhadap bobot dan tinggi tanaman. Bakteri endofit LCA5 dan LCA13 menyebabkan mortalitas lebih dari 90% terhadap Meloidogyne spp. J2. Selama 24 jam dan pada uji SOV menyebabkan mortalitas lebih dari 60% selama 24 jam. Bakteri endofit yang memiliki potensi sebagai pengendalian hayati diidentifikasi sebagai Dyella marensis, Stenotrophomonas rhizophilla, dan Providencia vermicola.

The Potentials of Cabbage Phyllospheric Bacteria as Biocontrol Agents of Soft Rot Disease Caused by Pectobacterium carotovorum on Chinese Cabbage Af’idzatuttama; Nawangsih, Abdjad Asih; Mutaqin, Kikin Hamzah
Jurnal Fitopatologi Indonesia Vol. 18 No. 3 (2022): Mei 2022
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.18.3.115-124

Busuk lunak yang disebabkan oleh Pectobacterium carotovorum (Syn. Erwinia carotovora subsp. carotovora) merupakan salah satu penyakit penting pada tanaman sawi putih. Bakteri ini menghasilkan enzim pektinase yang dapat menguraikan pektin pada dinding sel tanaman bagian lamela tengah. Salah satu alternatif pengendalian penyakit busuk lunak ialah menggunakan agens biokontrol dari filosfer. Penelitian ini bertujuan menyeleksi dan menguji bakteri filosfer dari daun kubis yang berpotensi menghambat penyakit busuk lunak P. carotovorum pada sawi putih. Bakteri filosfer diisolasi dari wilayah Cianjur, Tegal, dan Bogor. Bakteri filosfer diuji keamanan hayati berdasarkan pada reaksi hipersensitivitas dan kemampuan lisis pada agar-agar darah, serta diuji kemampuan penghambatannya terhadap P. carotovorum berdasarkan pada uji antagonis secara in vitro dan uji penghambatan penyakit secara in vivo. Bakteri filosfer dikarakterisasi berdasarkan pada morfologi koloni dan sifat Gram. Dua galur bakteri filosfer paling berpotensi mengendalikan penyakit busuk lunak pada sawi putih diidentifikasi sebagai Chryseobacterium sp.

Co-Authors . Giyanto . Giyanto ABDUL MUNIF Abdul Munif ABDUL MUNIF Abidin, Anugrawati Af'idzatuttama Af’idzatuttama Aisyah Imas Alina Akhdiya Anak Agung Keswari Krisnandika Anja Meryandini Aris Tri Wahyudi Asysyuura, Asysyuura Boedi Tjahjono Budi Marwoto DIMAS ANDRIANTO Edelwinna, Tiara EDI HUSEN Efi Toding Tondok Eka Wijayanti Eka Wijayanti Ely Lailatul Maghfiroh Eny Widajati Erina Sulistiani Firdaus, Muhamad Fajar Fitri Fatma Wardani Giyanto Gustan Pari Gustan Pari Haerani Haerani Hanudin Hanudin Husda Marwan Ida Parida IKA DAMAYANTI Iman Rusmana Imas Aisyah isnainy dinul Mursyalatiyus Juang Gema Kartika Kikin H Mutaqin Krisnandika, A. A. Keswari Marianah, Lisa Meity S. Sinaga Meity Suradji Sinaga Meity Suradji Sinaga Meliah, Siti Muhammad Evan Nurrahmawan Purwanto, Ukhradiya Magharaniq Safira RAHAYU FITRIANI WANGSA PUTRIE Sigiro, Ria Heni Siti Zulaiha Sudir Sudir, Sudir Sulistiyani Suryo Wiyono Tita Widjayanti Tita Widjayanti . Toding Tondok, Efi TRI ASMIRA DAMAYANTI Umi Fatmawati Wati, Cheppy Wiraswati, Sri Martina Yana Anisa . YULIN LESTARI Zhenita Vinda Tri Handini

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