Comparative genomics of lupin rhizobial symbionts

Rey Navarro, Luis and Duran Wendt, David Ricardo and Ruiz Argueso, Tomás and Imperial Ródenas, Juan (2015). Comparative genomics of lupin rhizobial symbionts. In: "XIV International Lupin Conference", 21/06/2015-26/06/2015, Milán (Italia). p. 1.


Title: Comparative genomics of lupin rhizobial symbionts
  • Rey Navarro, Luis
  • Duran Wendt, David Ricardo
  • Ruiz Argueso, Tomás
  • Imperial Ródenas, Juan
Item Type: Presentation at Congress or Conference (Article)
Event Title: XIV International Lupin Conference
Event Dates: 21/06/2015-26/06/2015
Event Location: Milán (Italia)
Title of Book: Developing lupin crop into a major and sustainable food and feed source
Date: 2015
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Biotecnología - Biología Vegetal
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Native bradyrhizobial symbionts of lupins thriving in the Iberian Peninsula were studied. The analysis included five species that preferred neutral or acid soils: L. angustifolius, L. luteus, L. hispanicus, L. micranthus and L. cosentinii, and the unique, recently described lupin species L. mariae-josephae, endemic of alkaline Chromic Luvisol soils (?terra rossa?) in Eastern Spain. Draft genome sequences of at least one strain from each lupin species were obtained by Illumina (PE, 2x300 bp, MySeq v. 3.0) sequencing, assembled with SPAdes, and annotated with the RAST server. Pairwise Average Nucleotide Identities (ANI) between genomes were calculated using JSpecies. The results showed a clear separation between strains nodulating L. mariae-josephae and those that nodulate lupins from acid soils. These results are in agreement with the observed host specificity, i. e. bradyrhizobia from L. mariae-josephae don?t nodulate most of the lupins from acid soils and any bradyrhizobia from acid soil lupins do nodulate, although inefficiently, L. mariae-josephae. In contrast, acid soil lupins are efficiently nodulated by bradyrhizobia isolated from any of these lupins. Consistent with this, comparison of symbiotic regions (nod, fix, nif genes), showed maximum differences between L. mariae-josephae strains and those from other lupins. Another genomic features were also compared and results will be discussed.

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Item ID: 41885
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Deposited by: Memoria Investigacion
Deposited on: 22 Sep 2016 15:05
Last Modified: 22 Sep 2016 15:05
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