The role of hydrophobicity in attachment of urediniospores and sporelings of Uromyces viciae-fabae

Study of pellet formation of filamentous fungi Rhizopus oryzae using a multiple logistic regression model

“…It has been found that the mechanism of pellet formation is varied from one microorganism to another (Dynesen and Nielsen, 2003). The study of intermolecular forces provides several possible mechanisms of pellet (Clement et al, 1994;Jones, 1994;Terhune and Hoch, 1993). For example of Aspergillus niger, hydrophobicity of the fungal cell wall was the driving force of pellet formation (Ryoo and Choi, 1999).…”

Apoplastic Diffusion Barriers in Arabidopsis

“…They act as substrates for the attachment of colonizing organisms to the leaf surface (Clement et al, 1994;Tucker and Talbot, 2001), and they also play crucial roles in plant-pathogen and plant-pest signaling (Kolattukudy et al, 1995;Chassot and Métraux, 2005;Reina-Pinto and Yephremov, 2009). It is well established that some wax components, such as triterpenoids and aldehydes, are important in pre-invasion processes, including spore germination and appressorium formation, in different plant species (Podila et al, 1993;Gniwotta et al, 2005;Reisige et al, 2006;Inada and Savory, 2011).…”

Germination ofPhyllosticta ampelicidaPycnidiospores: Prerequisite of Adhesion to the Substratum and the Relationship of Substratum Wettability

“…Initial indications were that the time required for pycnidiospores to become attached to the substratum was relatively short, which would indicate that the conidia attached passively with a quick release of prepackaged "glue-like" material such as that in the tip of M. grisea conidia (Hamer et al, 1988) or from around the conidium surface as in urediospores of many rust fungi (Clement et al, 1994;Deising et al, 1992). When pycnidiospores in ddH 2 O were deposited as a 10-l spore suspension onto polystyrene (a Ն 82°) for varying periods of time before being subjected to a hydraulic shearing force, >40% of the spores remained attached after settling for 5 min, and nearly all remained after 20 min (Fig.…”

“…Passive adhesion involves preformed adhesive materials located on, or near, the spore surface such as with the spore tip mucilage of Magnaporthe grisea (Hamer et al, 1988). In other instances, the adhesive material is released from the spore upon hydration with either free water or atmospheric moisture, as an extracellular glue-like material following deposition of the spore onto the substratum (Clement et al, 1994;Deising et al, 1992;Terhune and Hoch, 1993). Active release of the adhesive material from spores occurs over a longer period of time and is dependent upon metabolic processes of the fungal propagule as with Cochliobolus heterostrophus (Braun and Howard, 1994a), Nectria haeThis paper was accepted under the editorship of Robert Brambl.…”