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Teak Rust - Olivea Tectonae Olivea Tectonae Is the Only Rust Known to Occur on Teak, an Important Tropical Tree Grown for Its Beautiful Wood

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Teak Rust - Olivea Tectonae Olivea Tectonae Is the Only Rust Known to Occur on Teak, an Important Tropical Tree Grown for Its Beautiful Wood U.S. Department of Agriculture, Agricultural Research Service Systematic Mycology and Microbiology Laboratory - Invasive Fungi Fact Sheets Teak Rust - Olivea tectonae Olivea tectonae is the only rust known to occur on teak, an important tropical tree grown for its beautiful wood. Although historically known throughout Asia, this rust has recently been discovered in the Caribbean, Central America and Australia on cultivated teak trees (Perez et al. 2008). Olivea tectonae (T.S. Ramakr. & K. Ramakr.) R.L. Mulder Spermogonia and aecia unknown. Uredinia hypophyllous, subepidermal, erumpent, bright yellowish orange, sparse, minute, yellow, 0.2-0.5 mm; paraphyses cylindric, swollen at apex, incurved, wall 2.5 µm thick, peripheral; paraphysate. Urediniospores subglobose, obovoid to ellipsoid, yellowish orange, echinulate, 18-28 × 14-22 µm, walls hyaline, about 2 µm thick, germ pores not seen. Paraphyses incurved, 30-45 × 10-14 µm, walls thick, hyaline to pale brown, smooth. Telia mixed with uredinia, orange, waxy, subepidermal, early erumpent through epidermis; paraphyses as in uredinia. See Mulder & Gibson (1973) and Ramakrishnan & Ramakrishnan (1949) for more detailed descriptions. Host range: Uredinial and telial states reported on Tectona grandis and Tectona spp. (Lamiaceae) Geographic distribution: Known throughout Asia including Bangladesh; Burma; China: Guangdong, Guangxi, Hainan; India: Bihar, Tamil Nadu; Indonesia, Java; Pakistan; Philippines; Sri Lanka; Taiwan; Thailand; Viet Nam. Recently discovered in Australia and the Caribbean and Central America: Cuba; Costa Rica and Panama. Notes: Chaconia tectonae T.S. Ramakr. & K. Ramakr. 1949 (as Olivea tectonae 1949) is valid as an anamorph combination. Minnis et al. (2008) discussed the problem with the nomenclature of this species and proposed to conserve the name Olivea tectonae (T.S. Ramakr. & K. Ramakr.) R.L. Mulder. References: Arguedas, M. 2004. La roya de la tecta Olivea tectonae (Rac.): consideraciones sobre su presencia en Panama y Costa Rica. Kuru: Revista Forest. (Costa Rica) 1: 1-6. Boedijn, K.B. 1959. The Uredinales of Indonesia. Nova Hedwigia 1: 463-496. Daly, A.M., Shivas, R.G., Pegg, G.S., and Mackie, A.E. 2006. First record of teak leaf rust (Olivea tectonae) in Australia. Australasian Plant Disease Notes 1: 25-26. Kaneko, S., Pham, T. Q., and Hiratsuka, Y. 2007. Notes on some rust fungi in Vietnam. Mycoscience 48: 263-265. Kobayashi, T., and D. de Guzman, E. 1988. Notes on Tree Diseases and Associated Micro-organisms Observed from 1977 to 1985 in the Philippines. Japan Agric. Res. Quart. 22: 65-70. Lorsuwan, C., Tontyaporn, S., Visarathanonth, N., Manoch, L., and Kakishima, M. 1984. Materials for the rust flora in Thailand I. Trans. Mycol. Soc. Japan 25: 57-65. Minnis, A.M., Yun, H.Y., and Rossman, A.Y. 2008. Proposal to conserve the name Olivea tectonae (T.S. Ramakr. & K. Ramakr.) R.L. Mulder against Olivea tectonae (Racib.) Thirum. (Basidiomycota). Taxon 57: 1355-1366. Mulder, J.L., and Gibson, I.A.S. 1973. Olivea tectonae. C.M.I. Descr. Pathog. Fungi Bact. 365: 1-2. Ono, Y., and Hennen, J.F. 1983. Taxonomy of the Chaconiaceous genera (Uredinales). Trans. Mycol. Soc. Japan 24: 369-402. Perez, M., Lopez, M.O., and Marti, O. 2008. Olivea tectonae, leaf rust of teak, occurs in Cuba. New Disease Reports 17: 32. Raciborski, M. 1900. Parasitische Algen und Pilze Java's I. Theil. Staatsdruckerei, 39 pages. Ramakrishnan, K., and Ramakrishnan, T.S. 1949. Chaconia tectonae Ramakrishnan T.S. & K. sp. nov. on teak. Indian Phytopathol. 2: 17-19. Zhuang, W.-Y., Ed. 2001. Higher Fungi of Tropical China. Mycotaxon, Ltd., Ithaca, NY, 485 pages. Suggested citation: Yun, H.Y..Systematic Mycology and Microbiology Laboratory, ARS, USDA. Invasive Fungi. Teak Rust - Olivea tectonae. Retrieved September 27, 2021, from /sbmlweb/fungi/index.cfm . Use this link to revisit SMML website Uredinia of Olivea tectonae (x6) Urediniospore of Olivea tectonae (x40) .
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