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Citation for Study 24850

About Citation title: "Septoglomus mexicanum, a new species of arbuscular mycorrhizal fungi from semiarid regions in Mexico".
About Study name: "Septoglomus mexicanum, a new species of arbuscular mycorrhizal fungi from semiarid regions in Mexico".
About This study is part of submission 24850 (Status: Published).

Citation

Chimal-s?nchez E., Sen?s-guerrero C., Varela L., Monta?o N.M., Garc?a-s?nchez R., Pacheco A., Monta?o-arias S.A., & Camargo-ricalde S.L. 2019. Septoglomus mexicanum, a new species of arbuscular mycorrhizal fungi from semiarid regions in Mexico. Mycologia, .

Authors

  • Chimal-s?nchez E.
  • Sen?s-guerrero C. (submitter) Phone 0448117927970
  • Varela L.
  • Monta?o N.M.
  • Garc?a-s?nchez R.
  • Pacheco A.
  • Monta?o-arias S.A.
  • Camargo-ricalde S.L.

Abstract

Septoglomus mexicanum is here described as 1 a new species of arbuscular mycorrhizal fungi (Glomeromycota) based on morphological and phylogenetic analysis. It was isolated from rhizospheric soil of two endemic Mexican legumes: Prosopis laevigata and Mimosa luisana, which grow in semiarid regions of central Mexico. Septoglomus mexicanum is characterized by forming globose spores (154.5-)202.8(-228.9) ?m diameter, and a spore wall consisting of four layers (SWL1-SWL4): outer wall layer (SWL1) semi-permanent hyaline, (1.7-)3.2(-4.3) ?m thick; SWL2 permanent, laminated and smooth, orange to reddish orange, (3.1-)4.5(-6.1) ?m thick; SWL3 laminated, smooth, reddish orange to reddish brown, (4.1-)5.1(-5.7) ?m thick; and SWL4 semi-flexible layer similar in color to SWL3, (0.93-)1.2(-1.4) ?m thick. None of the spore wall layers stains with Melzer?s reagent. The subtending hypha has a color from yellowish to golden and presents a septum on spore base. Septoglomus mexicanum can be distinguished from all other Septoglomus species by spore size and color, spore wall structure (four layers), and by color change of the subtending hypha. Phylogenetic analysis based on the AMF extended DNA barcode covering a 1.5 kb fragment of the small subunit (SSU), internal transcribed spacer region (ITS1-5.8S-ITS2) and the large subunit (LSU) of rRNA genes, place S. mexicanum in the genus Septoglomus separated from other described Septoglomus species; especially S. turnauae with whom it could be confused morphologically. All available sequences in public databases suggest that this new fungal species has not yet been previously detected. Thus, there are currently 149 Glomeromycota species registered in Mexico, representing 47.4 % of the known species worldwide.

Keywords

Arbuscular mycorrhizae; deserts; fungal species; Glomeromycota; Leguminosae; one new taxon.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S24850
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