First Report of Eastern Dodder (Cuscuta monogyna) Parasitizing Licorice (Glycyrrhiza glabra) in Armenia (original) (raw)

Abstract

Cuscuta monogyna Vahl. (Convolvulaceae, subgenus Monogynella) is an aerial (stem) hemi-parasitic noxious weed attributed mostly to the Mediterranean region, SouthEastern Europe, and Central and Western Asia. The main botanical features of Eastern dodder are: i) stem pink, purple, or brown, 1 to 2 mm, rootless; ii) inflorescences loosely or densely spicate-paniculate; iii) flowers subsessile or pedicellate, lobes 5, white, pinkish to purplish, 3 to 4(6) mm long, pedicel 1.5-8.0 mm long, stamens 5, filaments 1-2 mm long; iv) calyx lobes 5, 2-3 х 1.5-2.5 mm long; v) ovary globular to conical, 1.5-2.0 mm × 2-2.5 mm, style 1, stigmas 2, capitate; vi) capsule conical, 5 to 8 mm long, with usually 1 to 4 subcordate seeds, ca. 3 mm (Piwowarczyk et al. 2018). It has diverse host preferences, though it has been recorded parasitizing a broad range of hosts, mostly wild and cultivated trees, shrubs or vines (Vitis,

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References (5)

  1. Fried, G., and Tison, J.-M. 2014. Biocosme mésogéen, Nice 31:5.
  2. Nguyen, L.-T. 2015. Mol Biol Evol, 32:1.
  3. Piwowarczyk, R., et al. 2018. Plant Dis. 102:2664.
  4. Weed Seeds Order. 2016. http://laws-lois.justice.gc.ca/eng/regulations/SOR-2016- 93/FullText.html Caption : Fig. 1. An Eastern dodder (Cuscuta monogyna Vahl.) at the Crimean Peninsula: (A) self- parasitizing stems; (B) flowers at different developmental stages; (C) fruits; (D) seeds; (E), (H) extensive infestation of C. monogyna on a common fig (Ficus carica) gone wild in Morskoye (=Qapsihor) village environs, 1.5 km NWW from Ay-Foka Cape, Voron River mouth, seaside, June 31, 2018 (E), 5. April 2018 (H);
  5. F), (I) functional haustoria formation on a fig stems; (G), (J) functional haustoria formation on a fig branches. Scale bar: A-D = 1 cm. 219x219mm (150 x 150 DPI)