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Citation for Study 10677

About Citation title: "Morphological and molecular characterization of two ITS groups of Erysiphe (Erysiphales) occurring on Syringa and Ligustrum (Oleaceae)".
About Study name: "Morphological and molecular characterization of two ITS groups of Erysiphe (Erysiphales) occurring on Syringa and Ligustrum (Oleaceae)".
About This study is part of submission 10667 (Status: Published).

Citation

Seko Y., Kiss L., Heluta V., Grigaliunaite B., & Takamatsu S. 2011. Morphological and molecular characterization of two ITS groups of Erysiphe (Erysiphales) occurring on Syringa and Ligustrum (Oleaceae). Mycoscience, 52(3): 174-182.

Authors

  • Seko Y.
  • Kiss L.
  • Heluta V.
  • Grigaliunaite B.
  • Takamatsu S.

Abstract

ITS sequences determined for 53 Erysiphe specimens on Syringa and Ligustrum collected in Europe, East Asia, and North and South America revealed that these sequences are divided into two ITS groups, S-type and K-type. Phylogenetic analysis showed that these two ITS types do not share a common ancestor and form separate clades. K-type on Ligustrum was identified as Erysiphe ligustri by its unique three dimensional branching pattern of appendages. Morphological observations showed that there are some morphological differences, viz. pigmentation of appendages and number of ascospores per ascus, between S-type and K-type on Syringa. Based on the morphological observations, S-type and K-type on Syringa were identified as E. syringae and E. syringae-japonicae, respectively. Recent abundant production of chasmothecia by lilac mildew in Europe may have caused by E. syringae-japonicae introduced from East Asia. DNA sequence analyses of rDNA ITS region, 28S rDNA, mitochondria SSU rDNA, tub2, CYP51, and Chs1 genes did not support interspecific hybrid origin of E. syringae-japonicae. Haplotype analysis suggested North America as a geographic origin of E. syringae and its independent migration to East Asia and Europe/South America.

Keywords

Erysiphaceae ? Erysiphe syringae ? Erysiphe syringae-japonicae ? Microsphaera ? Geographic origin

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S10677
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