title: PTGBase: an integrated database to study tandem duplicated genes in plants.
abstract: Tandem duplication is a wide-spread phenomenon in plant genomes and plays significant roles in evolution and adaptation to changing environments. Tandem duplicated genes related to certain functions will lead to the expansion of gene families and bring increase of gene dosage in the form of gene cluster arrays. Many tandem duplication events have been studied in plant genomes; yet, there is a surprising shortage of efforts to systematically present the integration of large amounts of information about publicly deposited tandem duplicated gene data across the plant kingdom. To address this shortcoming, we developed the first plant tandem duplicated genes database, PTGBase. It delivers the most comprehensive resource available to date, spanning 39 plant genomes, including model species and newly sequenced species alike. Across these genomes, 54 130 tandem duplicated gene clusters (129 652 genes) are presented in the database. Each tandem array, as well as its member genes, is characterized in complete detail. Tandem duplicated genes in PTGBase can be explored through browsing or searching by identifiers or keywords of functional annotation and sequence similarity. Users can download tandem duplicated gene arrays easily to any scale, up to the complete annotation data set for an entire plant genome. PTGBase will be updated regularly with newly sequenced plant species as they become available.
authors: The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China and Department of Life Science and Technology, Nanyang Normal University, Wolong Road, Nanyang 473061, China.
authors: Jingyin
authors: J
authors: Yu
authors: The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China and Department of Life Science and Technology, Nanyang Normal University, Wolong Road, Nanyang 473061, China.
authors: Tao
authors: T
authors: Ke
authors: The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China and Department of Life Science and Technology, Nanyang Normal University, Wolong Road, Nanyang 473061, China.
authors: Sadia
authors: S
authors: Tehrim
authors: The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China and Department of Life Science and Technology, Nanyang Normal University, Wolong Road, Nanyang 473061, China.
authors: Fengming
authors: F
authors: Sun
authors: The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China and Department of Life Science and Technology, Nanyang Normal University, Wolong Road, Nanyang 473061, China huawei@oilcrops.cn.
authors: Boshou
authors: B
authors: Liao
authors: The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China and Department of Life Science and Technology, Nanyang Normal University, Wolong Road, Nanyang 473061, China huawei@oilcrops.cn.
authors: Wei
authors: W
authors: Hua
mesh_terms: D030561:Databases, Nucleic Acid; D020440:Gene Duplication; D017343:Genes, Plant; D005810:Multigene Family; D010944:Plants / Q000235:genetics*