title: Virus resistance in orchids.
abstract: Orchid plants, Phalaenopsis and Dendrobium in particular, are commercially valuable ornamental plants sold worldwide. Unfortunately, orchid plants are highly susceptible to viral infection by Cymbidium mosaic virus (CymMV) and Odotoglossum ringspot virus (ORSV), posing a major threat and serious economic loss to the orchid industry worldwide. A major challenge is to generate an effective method to overcome plant viral infection. With the development of optimized orchid transformation biotechnological techniques and the establishment of concepts of pathogen-derived resistance (PDR), the generation of plants resistant to viral infection has been achieved. The PDR concept involves introducing genes that is(are) derived from the virus into the host plant to induce RNA- or protein-mediated resistance. We here review the fundamental mechanism of the PDR concept, and illustrate its application in protecting against viral infection of orchid plants.
authors.affiliation: Academia Sinica Biotechnology Center in Southern Taiwan, Tainan, Taiwan.
authors.forename: Kah Wee
authors.initials: KW
authors.lastname: Koh
authors.affiliation: Academia Sinica Biotechnology Center in Southern Taiwan, Tainan, Taiwan.
authors.forename: Hsiang-Chia
authors.initials: HC
authors.lastname: Lu
authors.affiliation: Academia Sinica Biotechnology Center in Southern Taiwan, Tainan, Taiwan; Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan. Electronic address: mbmtchan@gate.sinica.edu.tw.
authors.forename: Ming-Tsair
authors.initials: MT
authors.lastname: Chan
mesh_terms: D060467:Disease Resistance; D005814:Genes, Viral; D029595:Orchidaceae / Q000235:genetics / Q000276:immunology* / Q000821:virology*; D034622:RNA Interference; D014170:Transformation, Genetic
keywords: Coat protein; Cymbidium mosaic virus; Odotoglossum ringspot virus; Pathogen-derived resistance; Post-transcriptional gene silencing