Phylogenetic inferences in Prunus （Rosaceae） using chloroplast ndhF and nuclear ribosomal ITS sequences  

作　　者：Jun WEN Scott T. BERGGREN Chung-Hee LEE Stefanie ICKERT-BOND Ting-Shuang YI Ki-Oug YOO Lei XIE Joey SHAW Dan POTTER 

机构地区：[1]Department of Botany, National Museum of Natural History, MRC 166, Smithsonian Institution, Washington, DC 20013-7012, USA [2]Department of Biology, Colorado State University, Fort Collins, CO 80523, USA [3]Korean National Arboretum, 51-7 Jikdongni Soheur-eup Pocheon-si Gyeonggi-do, 487-821, Korea [4]UA Museum of the North and Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775-6960, USA [5]Key Laboratory of Plant Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China [6]Division of Life Sciences, Kangwon National University, Chuncheon 200-701, Korea [7]State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China [8]Department of Biological and Environmental Sciences, University of Tennessee, Chattanooga, TN 37403-2598, USA [9]Department of Plant Sciences, MS 2, University of California, Davis, CA 95616, USA

出　　处：《植物分类学报》2008年第3期322-332,共11页Acta Phytotaxonomica Sinica

摘　　要：Sequences of the chloroplast ndhF gene and the nuclear ribosomal ITS regions are employed to recon-struct the phylogeny of Prunus (Rosaceae), and evaluate the classification schemes of this genus. The two data sets are congruent in that the genera Prunus s.l. and Maddenia form a monophyletic group, with Maddenia nested within Prunus. However, the ndhF data set is incongruent with the ITS data supporting two major groups within Prunus: one consisting of subgenera Laurocerasus (including Pygeum) and Padus as well as the genus Maddenia and another of subgenera Amygdalus, Cerasus, and Prunus. The ITS data, on the other hand, support a clade composed of subgenera Amygdalus and Prunus and Prunus sect. Microcerasus in addition to a paraphyletic grade of subgenera Laurocerasus and Padus (and the genus Maddenia) taxa. In general, the subgeneric classifications of Prunus s.l. are not supported. The ITS and ndhF phylogenies differ mainly in interspecific relationships and the relative position of the Padus/Laurocerasus group. Both ITS and ndhF data sets suggest that the formerly recog-nized genus Pygeum is polyphyletic and that the distinction of the subgenera Padus and Laurocerasus is not supported. The biogeographic interactions of the temperate and tropical members in the Padus/Laurocera- sus/Maddenia alliance including Pygeum are shown to be highly dynamic and complex.Sequences of the chloroplast ndhF gene and the nuclear ribosomal ITS regions are employed to reconstruct the phylogeny of Prunus （Rosaceae）, and evaluate the classification schemes of this genus. The two data sets are congruent in that the genera Prunus s.l. and Maddenia form a monophyletic group, with Maddenia nested within Prunus. However, the ndhF data set is incongruent with the ITS data supporting two major groups within Prunus： one consisting of subgenera Laurocerasus （including Pygeum） and Padus as well as the genus Maddenia and another of subgenera Amygdalus, Cerasus, and Prunus. The ITS data, on the other hand, support a clade composed of subgenera Amygdalus and Prunus and Prunus sect. Microcerasus in addition to a paraphyletic grade of subgenera Laurocerasus and Padus （and the genus Maddenia） taxa. In general, the subgeneric classifications of Prunus s.l. are not supported. The ITS and ndhF phylogenies differ mainly in interspecific relationships and the relative position of the Padus/Laurocerasus group. Both ITS and ndhF data sets suggest that the formerly recognized genus Pygeum is polyphyletic and that the distinction of the subgenera Padus and Laurocerasus is not supported. The biogeographic interactions of the temperate and tropical members in the Padus/Luuicocerasus/Maddenia alliance including Pygeum are shown to be highly dynamic and complex.

关 键 词：系统发生学 叶绿体 核糖体 层序 核子 

分 类 号：Q959.21[生物学—动物学] Q945.11