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Small Bacilliform Particles Associated with Penyakit Habang (Tungro-like) Disease of Rice in Indonesia. Yasuo Saito, Research Plant Pathologist, Institute for Plant Virus Research, 959 Aobacho, Chiba, Japan; Martoadmojo Roechan(2), Dewa M. Tantera(3), and Mitsuro Iwaki(4). (2)(3)(4)Research Assistant, and Research Plant Pathologists, respectively, Central Research Institute for Agriculture, Jalan Merdeka 99, Bogor, Indonesia. Phytopathology 65:793-796. Accepted for publication 22 February 1975. DOI: 10.1094/Phyto-65-793.

Small bacilliform particles of about 25 × 140 nm were found in the phloem cells of rice plants infected with penyakit habang disease in Indonesia. No spherical particles of 30 nm in diameter, such as rice tungro virus, were detected in these preparations. Necrosis of phloem cells was also observed in the diseased tissues. The bacilliform particles were found not only in the diseased rice plants collected from paddy fields, but also in the plants inoculated by means of viruliferous leafhoppers, Nephotettix virescens Distant. Transmission appeared to be a nonpersistent type.