Leveillula, G. Arnaud, 1921
publication ID |
https://doi.org/ 10.11646/phytotaxa.260.3.6 |
persistent identifier |
https://treatment.plazi.org/id/0392586F-9D04-FFF6-FF10-F89EFE93F7BB |
treatment provided by |
Felipe |
scientific name |
Leveillula |
status |
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Leveillula View in CoL View at ENA on Ficus
There is no record of the genes Leveillula on Moraceae in Braun and Cook’s taxonomic manual. The only report of this fungus on Moraceae belongs to L. taurica ( Salari et al. 2010) . According to the drawing provided by the author, conidium morphology of the fungus is different from those of L. taurica . Hence, morphology of the fungus was reexamined. According to our observation primary conidium are broadly ellipsoid, ovoid, to lanceolate, secondary conidia ellipsoid-cylindric to ovoid ( Fig. 6). Such characteristics more or less resemble Leveillula contractirostris V.P. Heluta & Simonyan. Moreover , during this study rDNA ITS of herbarium material was sequenced.
Fig.5 View FIGURE 5 compares the nucleotide sequences of the rDNA ITS region from Ficus and some related specimens. As shown in Fig. 5 View FIGURE 5 , three substitutions have been occurred in Ficus isolates at position 139, 368 and 400, when compared to ITS sequences of L. taurica on Zygophyllum fabago , type host of the species. Such substitutions are similar to L. contractirostris on Alcea spp. However, two deletion sites were found at positions 170–175 and 182–184, that are found in some Leveillula isolates such as Leveillula on Medicago and Tropaeolum .
In ME and NJ trees the Ficus isolate clustered with L. contractirostris ( Fig. 1 View FIGURE 1 ). However, in MP tree Ficus powdery mildew clustered with Medicago powdery mildew group with high bootstrap value (96%). As a result we suggest that Ficus powdery mildew is closely related to L. contractirostris .
Specimen examined. IRAN, Sistan and Bluchestan Province, Zabol, on Ficus carica L., 6 Nov 2007, J. Abkhoo (GUM 718).
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