Analysis of soil water matric potential requirement for infection of turnip withPlasmodiophora brassicaeusing negative pressure water circulation technique

Factors affecting the pattern of the dose response curve of clubroot disease caused byPlasmodiophora brassicae

“…It was reported that the incidence of clubroot depended on the liming sources, soil pH, soil texture, and water content (Hamilton and Crete 1978;Webster and Dixon 1991a, b;Iwama et al 1994). Young et al (1991) suggested that phenolic compounds (gentisic acid) were more effective in disease suppression than the pH, concentrations of Ca.…”

Complete characterization of pore size distribution of tilled and orchard soil using water retention curve, mercury porosimetry, nitrogen adsorption, and water desorption methods

“…A detailed description of pore size distribution of soil displaying multi-peak PSD can help improve multidomain simulation of water and solute flow, pore-size dependent sorption (Durner and Flühler, 1996;Mallants et al, 1997), microorganisms (Iwama et al, 1993) and the movement of colloids in relation to soil management practices. Mallants et al (1997) reported that the agreement between the predicted and observed water contents and hydraulic conductivities using the Mualem-van Genuchten model substantially increased when uni-, bi-, or trimodal pore size distributions were consecutively used.…”

Environmental conditions modulate the effect of epigenetic factors controlling the response of Arabidopsis thaliana to Plasmodiophora brassicae

“…The abiotic constraints applied were chosen according to the characteristics and needs of both A. thaliana and the pathogen P. brassicae . Only a moderate drought was thus applied, as the zoospores of P. brassicae require high soil moisture to move and properly infect the plants ( Aist and Williams, 1971 ; Iwama et al., 1994 ). Although the plant displayed reduced leaf growth, no wilting was observed, confirming that the drought applied is a moderate constraint for the plant ( Bac-Molenaar et al., 2016 ).…”