Kajian Plant Promoting Rhizobacteria Sebagai Agens Proteksi Cucumber Mosaic Virus dan Chilli Mottle pada Cabai  

Oleh:

Hendrastuti, Hidayat Sri ; Gede, Suastika ; Mandang, Sumaraw Sientje ; Sriani, Sujiprihati ; Muhammad, Taufik

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Hayati Journal of Biosciences vol. 12 no. 4 (Dec. 2005), page 139-144.
Topik: TUMBUH-TUMBUHAN; Chilli Veinal Mottle Virus pada Cabai; Plant Growth Promoting Rhizobacteria; Agens Proteksi Cucumber Mosaic Virus
Fulltext: 56.pdf (57.59KB)

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Perpustakaan Pusat (Semanggi) Nomor Panggil: HH13.7 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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This study was conducted to evaluate the effectiveness of plant growth promoting rhizobacteria (PGPR) in protecting chillipepper plant from infection on cucumber mosaic virs (CMV) and chilli veinal mottle virus (ChiVMV). Seven isolates of PGPR, i. e. BC1, BTP2H, BTP3G, BTP3O, BTP1, BTP2D and T1F were applied as seed treatment and soil drench. Plants height, number of branch and fruits weight were measured every one and ten weeks after virus inoculation. Virus concentration in plants and disease incidence were confirmed by enzyme-linked immunosorbant assy (ELISA). Result showed that inoculation with PGPR improved the seed germination. Eight days after sowing the percentage of PGPR treated seed germination reached 50-84%, whereas those of untreated seed reached only 18%. In general, PGPR treatment significantly reduced (p <=0.05) the effect of virus infection on plant growth. Two PGPR isolates, i. e. BTP1 and BTP2H, maintained fruit weight of infected plants as good as those of healthy plants. Based on ELISA, PGPR was able to inhibit the disease incidence. The BTP3O and BTP2D isolates even protected the plant from ChiVMV infection. Concentration of salicylic acid and peroxidase were relatively higher on plants treated with PGPR than those without PGPR treatment, This gave an indication that PGPR may act as induction agents for systemic acquired resistance. Therefore, PGPR treatment is a promising strategy to control viral diseases on chillipepper.

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