Supplementary Video from ‘Sneezing’ plants: pathogen transport via jumping-droplet condensation
Saurabh Nath
S. Farzad Ahmadi
Hope A. Gruszewski
Stuti Budhiraja
E. Bisbano
Sunghwan Jung
David G. Schmale
Jonathan B. Boreyko
10.6084/m9.figshare.8216255.v1
https://rs.figshare.com/articles/media/Supplementary_Video_from_Sneezing_plants_pathogen_transport_via_jumping-droplet_condensation/8216255
We show that condensation growing on wheat leaves infected with <i>P. triticina</i> is capable of spontaneously launching urediniospores off the plant. This surprising liberation mechanism is enabled by the superhydrophobicity of wheat leaves, which promotes a jumping-droplet mode of condensation powered by the surface energy released from coalescence events. We found that urediniospores often adhere to the self-propelled condensate, resulting in liberation rates approximately 10 cm<sup>−2</sup> h<sup>−1</sup> for leaves infected with rust. Urediniospores were catapulted up to 5 mm from the leaf’s surface, a distance sufficient to clear the laminar boundary layer for subsequent dispersal even in gentle winds.
2019-06-01 13:12:06
wheat leaf
superhydrophobic
jumping-droplet condensation
spores
liberation
dispersal