caa a22 4500 463168682 CHVBK 20180406164807.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10530-006-0009-2 doi (NATIONALLICENCE)springer-10.1007/s10530-006-0009-2 Nodule Symbiosis of Invasive Mimosa pigra in Australia and in Ancestral Habitats: A Comparative Analysis [Elektronische Daten] [Matthew Parker, Anna Wurtz, Quentin Paynter] Ninety isolates of root nodule bacteria from an invasive Mimosa pigra population in Australia were characterized by PCR assays and by sequencing of ribosomal genes. All isolates belonged to the same bacterial genus (Burkholderia) that predominates on M. pigra in its native geographic range in tropical America. However, the Australian Burkholderia strains represented several divergent lineages, none of which had a close relationship to currently known Burkholderia strains in American M. pigra populations. Inoculation of M. pigra with Australian strains resulted in equal or higher plant growth and nodule nitrogenase activity (measured by acetylene reduction assays) relative to outcomes with bacteria from M. pigra's native geographic region. The main difference in symbiotic phenotype for bacteria from the two regions involved responses to an alternate Mimosa host species: Central American strains failed to fix nitrogen in association with Mimosa pudica, while most Australian Burkholderia isolates tested had high nodule nitrogenase activity in association with both Mimosa species. Invasive M. pigra populations in Australia have therefore acquired a diverse assemblage of nodule bacteria that are effective nitrogen-fixing symbionts, despite having a broader host range and a distant genetic relationship to bacterial strains found in the plant's ancestral region. Springer, 2006 Burkholderia nationallicence nitrogen fixation nationallicence phylogeography nationallicence ribosomal RNA nationallicence symbiotic compatibility nationallicence Parker Matthew Department of Biological Sciences, State University of New York, 13902, Binghamton, NY, USA aut Wurtz Anna Department of Biological Sciences, State University of New York, 13902, Binghamton, NY, USA aut Paynter Quentin Cooperative Research Centre for Australian Weed Management, CSIRO Entomology, PMB 44, 0822, Winnellie, NT, Australia aut Biological Invasions Kluwer Academic Publishers 9/2(2007-03-01), 127-138 1387-3547 9:2<127 2007 9 10530 https://doi.org/10.1007/s10530-006-0009-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10530-006-0009-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Parker Matthew Department of Biological Sciences, State University of New York, 13902, Binghamton, NY, USA aut NATIONALLICENCE 700 1- Wurtz Anna Department of Biological Sciences, State University of New York, 13902, Binghamton, NY, USA aut NATIONALLICENCE 700 1- Paynter Quentin Cooperative Research Centre for Australian Weed Management, CSIRO Entomology, PMB 44, 0822, Winnellie, NT, Australia aut NATIONALLICENCE 773 0- Biological Invasions Kluwer Academic Publishers 9/2(2007-03-01), 127-138 1387-3547 9:2<127 2007 9 10530 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer