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All Journal Indonesian Journal of Agricultural Science BERITA BIOLOGI JURNAL BIOLOGI INDONESIA
Edy Listanto
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian Jl. Tentara Pelajar No. 3A, Bogor 16111, Indonesia, Telp: +62 (251) 8337975, Fax: +62 (251) 833882
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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EFFECTS OF LATE BLIGHT RESISTANT POTATO CONTAINING RB GENE ON THE SOIL MICROBES, PESTS AND PLANT DISEASES Riyanti, Eny Ida; Listanto, Edy; Ambarwati, Alberta Dinar
Indonesian Journal of Agricultural Science Vol 15, No 2 (2014): October 2014
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Late blight caused by Phytophthora infestans is an important disease on potato.  Several potato hybrids have been generated by crossing local varieties (Atlantic and Granola) with Katahdin SP951 which contains late blight resistance gene RB.  Prior to release, these hybrids need to be evaluated for their environ-mental effects on non-target organisms and natural pests and diseases. The objectives of the study were to investigate the effect of LBR potato hybrids on beneficial soil microbes, pests and diseases. The trial was conducted in the confined field trial (CFT) in Lembang, West Java. The parental non-transgenic (NT) clones (Granola, Atlantic and Katahdin) and LBR hybrids (four clones of Atlantic x Katahdin SP951 hybrids; 10 clones of Granola x Katahdin SP951) were planted at a plant spacing of 30 cm x 70 cm. Fungicide applications were used as treat-ments (no spray, five and twenty times sprays). The experi-ment was arranged in a randomized completely block design with three replications. The parameters determined were popula-tions of N2 fixing and P solubilizing bacteria, soil C/N ratio as well as natural pests and diseases. The results showed that the transgenic LBR potato hybrids did not have negative effect on N fixing bacteria. The bacterial populations were around 1010-11 cells g-1 soil before planting, 1012 cells at 1.5 months after planting (MAP) and 108 cells after harvest. For P- solubilizing bacteria, their populations were 1010 cells before planting, 1012 cells at 1.5 MAP and 1011 cells g-1  soil after harvest. The soil C/N ratio of the transgenic plot was not statistically different compared to non-transgenic plot, i.e. 12-15 before planting, 10-11 at 1.5 MAP, and 10 after harvest in non-spray plot. Pests and diseases such as Alternaria solani, Liriomyza, potato tubber moth, aphid and mites on the transgenic and non-transgenic plots were statistically not different. The resistance score for A. solani was 7.2 (parental tansgenic) and 7.6 (parental non-transgenic); for Liriomyza it was 2.07 (parental transgenic) and 2.32 insect per plant (parental non-transgenic), the PTM was 0.63 (parental transgenic) and 0.73 insect per plant (parental non-transgenic), aphid and mites were 0.75 (parental transgenic) and 1.68 insects per plant (parental non-transgenic). The study indicated that LBR potato hybrids did not have any negative impacts on non-target organisms.
Klon-klon Kentang Transgenik Hasil Persilangan Terseleksi Tahan terhadap Penyakit Hawar Daun Phytophthora infestans Tanpa Penyemprotan Fungisida di Empat Lapangan Uji Terbatas Ambarwati, Alberta Dinar; ,, Kusmana; Listanto, Edy
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i2.2191

Abstract

ABSTRACTThe use of resistant varieties is an appropriate alternative in controlling the late blight, a major diseases on potato, caused by the fungus Phytophthora infestans. The development of late blight resistant potato was done through hybridization between non-transgenic Atlantic or Granola with RB transgenic Katahdin SP904 and SP951. The hybrid clones which have been positively contained the RB gene were evaluated for the resistance to P. infestans in four Confined Field Trials (CFTs) i.e. Pasir Sarongge (2008), Lembang (2009-2010), Pangalengan (2010-2011) and Banjarnegara (2011-2012). There are twelve selected hybrid clones which were resistant to P. infestans both in each location of CFT or in four locations were obtained. These clones consist of five clones from crosses of Atlantic and trangenic Katahdin SP951 (B35, B169, B163, B11, B162) and seven clones from crosses of Granola and transgenic Katahdin SP951 (D76, D12, D25, D48, D38, D37, D15). The selected hybrid clones showed resistance to P. infestans until 14 to 18 days after infection or about 40 to 45 days after planting, in the absence of fungicide spraying. The hybrid clones had a resistance score varied from 7,65 to 8,23 and were significantly different from the parents Atlantic and Granola, with a resistance score of 3,6 and 3,45, respectively. This was also supported by AUDPC values, which showed that AUDPC of the hybrid clones were in the range between Atlantic or Granola and transgewnic Katahdin SP951. This indicate that the resistance level of the hybrid clones is in the range between susceptible and resistant check. The resistant hybrid clones are valuable genetic resources for late blight resistance breeding programs, particularly in reducing  the frequency of fungicide applications. Keywords : transgenic potato, hybrid clones, Phytophthora infestans, confined field trial 
PENINGKATAN PERTUMBUHAN PADI VAR CIHERANG SETELAH DIINOKULASI DENGAN Azospirillum MUTAN MULTIFUNGSI PENAMBAT N2, PELARUT P DAN PENGHASIL FITOHORMON INDOLE ACETIC ACID (IAA). [The growth enhancement of rice var. Ciherang after inoculated with Azospirillum mutants multifunction capable of N2-fixation, P solubilization, and producing phytohormone indole acetic acid (IAA)] Riyanti, Eny Ida; Listanto, Edy
BERITA BIOLOGI Vol 16, No 1 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2391.126 KB) | DOI: 10.14203/beritabiologi.v16i1.2171

Abstract

Modern agriculture rellies on the application of fertilizer to enhanched plant growth. Excessive application of chemical fertilizers in the long term will decrease soil fertility, therefore the use of biological fertilizers is expected to reduce the negative impact. The aim of this study was to determine the effect of multi-functional Azospirillum for N2-fixation, phosphate solubilizer  and producing phytohormone Indole Acetic Acid (IAA) on the growth of rice plants Ciherang in the pot experiment conducted in the BB Biogen’s greenhouse. Two treatments were tested: types of inoculation (not inoculated, were inoculated with the wildtype AjB 6.4.1.2 and inoculated with mutant isolates AJM 3.7.1.14), and 4 levels of fertilizer application (not fertilized, a quarter dose of paddy fertilizer recommendations, a half dose of fertilizer rice in the rice fields, and the appropriate dose of fertilizer in paddy fields). Azospirillum used is wildtype isolate AjB 6.4.1.2 and mutant isolate AJM 3.7.1.14 isolated and and mutated in BB Biogen. Ciherang rice seed inoculated with Azospirillum on the cell density of 106 cells / ml at the different seedlings tub. After the age of 14 days after planting, the seedlings were transferred into pots with three plants per pot. Parameters measured were: plant height, number of tillers, number of panicles per clump, fresh weight and dry panicles per clump, weight of 100 grains, and the content of N and P stover. Results show that inoculantion, affect significantly on the number of panicles per hill, grain weight per panicle and the dry weight of grains per panicle. 
KLON-KLON KENTANG TRANSGENIK HASIL PERSILANGAN TERSELEKSI TAHAN TERHADAP PENYAKIT HAWAR DAUN PHYTOPHTHORA INFESTANS TANPA PENYEMPROTAN FUNGISIDA DI EMPAT LAPANGAN UJI TERBATAS Ambarwati, Alberta Dinar; ,, Kusmana; Listanto, Edy
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i2.2191

Abstract

ABSTRACTThe use of resistant varieties is an appropriate alternative in controlling the late blight, a major diseases on potato, caused by the fungus Phytophthora infestans. The development of late blight resistant potato was done through hybridization between non-transgenic Atlantic or Granola with RB transgenic Katahdin SP904 and SP951. The hybrid clones which have been positively contained the RB gene were evaluated for the resistance to P. infestans in four Confined Field Trials (CFTs) i.e. Pasir Sarongge (2008), Lembang (2009-2010), Pangalengan (2010-2011) and Banjarnegara (2011-2012). There are twelve selected hybrid clones which were resistant to P. infestans both in each location of CFT or in four locations were obtained. These clones consist of five clones from crosses of Atlantic and trangenic Katahdin SP951 (B35, B169, B163, B11, B162) and seven clones from crosses of Granola and transgenic Katahdin SP951 (D76, D12, D25, D48, D38, D37, D15). The selected hybrid clones showed resistance to P. infestans until 14 to 18 days after infection or about 40 to 45 days after planting, in the absence of fungicide spraying. The hybrid clones had a resistance score varied from 7,65 to 8,23 and were significantly different from the parents Atlantic and Granola, with a resistance score of 3,6 and 3,45, respectively. This was also supported by AUDPC values, which showed that AUDPC of the hybrid clones were in the range between Atlantic or Granola and transgewnic Katahdin SP951. This indicate that the resistance level of the hybrid clones is in the range between susceptible and resistant check. The resistant hybrid clones are valuable genetic resources for late blight resistance breeding programs, particularly in reducing  the frequency of fungicide applications. Keywords : transgenic potato, hybrid clones, Phytophthora infestans, confined field trial 
Co-Authors Alberta Dinar Ambarwati Eny Ida Riyanti Kusmana ,, Kusmana