caa a22 4500 463168232 CHVBK 20180406164805.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10530-006-9029-1 doi (NATIONALLICENCE)springer-10.1007/s10530-006-9029-1 Phenotypic plasticity rather than locally adapted ecotypes allows the invasive alligator weed to colonize a wide range of habitats [Elektronische Daten] [Yu-Peng Geng, Xiao-Yun Pan, Cheng-Yuan Xu, Wen-Ju Zhang, Bo Li, Jia-Kuan Chen, Bao-Rong Lu, Zhi-Ping Song] Both phenotypic plasticity and locally adapted ecotypes may contribute to the success of invasive species in a wide range of habitats. Here, we conducted common garden experiments and molecular marker analysis to test the two alternative hypotheses in invasive alligator weed (Alternanthera philoxeroides), which colonizes both aquatic and terrestrial habitats. Ninety individuals from three pairs of aquatic versus terrestrial populations across southern China were analyzed, using inter simple sequence repeat (ISSR) marker, to examine population differentiation in neutral loci. Two common gardens simulating aquatic and terrestrial habitats were set up to examine population differentiation in quantitative traits. We found no evidence of population differentiation in both neutral loci and quantitative traits. Most individuals shared the same ISSR genotype. Meanwhile, plants from different habitats showed similar reaction norms across the two common gardens. In particular, plants allocated much more biomass to the belowground roots in the terrestrial environment, where alligator weed may lose part or all of the aboveground shoots because of periodical or accidental disturbances, than those in the aquatic environment. The combined evidence from molecular marker analysis and common garden experiments support the plasticity hypothesis rather than the ecotype hypothesis in explaining the adaptation of alligator weed in a wide range of habitats. Springer Science+Business Media B.V., 2006 Alternanthera philoxeroides nationallicence Common garden experiment nationallicence Ecotype nationallicence Invasive species nationallicence Molecular marker nationallicence Phenotypic plasticity nationallicence Geng Yu-Peng Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Pan Xiao-Yun Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Xu Cheng-Yuan Lamont Doherty Earth Observatory, Department of Earth and Environmental Sciences, Columbia University, 61 Route 9w, Palisades, 10964, Palisades, NY, USA aut Zhang Wen-Ju Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Li Bo Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Chen Jia-Kuan Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Lu Bao-Rong Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Song Zhi-Ping Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut Biological Invasions Kluwer Academic Publishers 9/3(2007-04-01), 245-256 1387-3547 9:3<245 2007 9 10530 https://doi.org/10.1007/s10530-006-9029-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10530-006-9029-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Geng Yu-Peng Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Pan Xiao-Yun Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Xu Cheng-Yuan Lamont Doherty Earth Observatory, Department of Earth and Environmental Sciences, Columbia University, 61 Route 9w, Palisades, 10964, Palisades, NY, USA aut NATIONALLICENCE 700 1- Zhang Wen-Ju Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Li Bo Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Chen Jia-Kuan Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Lu Bao-Rong Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Song Zhi-Ping Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, 220 Handan Road, 200433, Shanghai, P.R. China aut NATIONALLICENCE 773 0- Biological Invasions Kluwer Academic Publishers 9/3(2007-04-01), 245-256 1387-3547 9:3<245 2007 9 10530 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer