Peronospora arborescens
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Peronospora arborescens - a+b) conidiophores, c) ultimate branchlets, d-h) conidia, i-k) oogonia and oospores - scale bars: a) 100 µm, b) 50 µm, c–k) 20 µm (click on image to enlarge it)
Authors: Hermann Voglmayr, Miguel Montes-Borrego and Blanca B. Landa
Source: PLoS ONE (2014), 9 (5), e96838
Authors: Hermann Voglmayr, Miguel Montes-Borrego and Blanca B. Landa
Source: PLoS ONE (2014), 9 (5), e96838
Peronospora arborescens (Berk.) de Bary 1855
This oomycete is widely distributed and causes mainly downy mildew of poppy. It was originally described from Papaver rhoeas, but also infects other Papaver species, including Papaver somniferum. In addition, several other plants of the family Papaveraceae can be infected, like those belonging to the genera Argemone (prickly poppy) or Meconopsis (blue poppy). Infected plants show deformations, a light yellowish green discolouration, and gray-violet mycelium on the lower leaf surface during moist conditions.
