10 research outputs found
Quantitative trait loci for slow-rusting resistance in wheat to leaf rust and stripe rust identified with multi-environment analysis
No full textAnalysis of leaf and stripe rust severities reveals pathotype changes and multiple minor QTLs associated with resistance in an Avocet × Pastor wheat population
No full textLeaf tip necrosis, molecular markers and a1-proteasome subunits associated with the slow rusting resistance genes Lr46/Yr29
No full textA database on genes increasing the resistance of wheat and its related species against pathogenic fungi
No full textThe apoplast of ectomycorrhizal roots – site of nutrient uptake and nutrient exchange between the symbiotic partners
No full textPaired arbuscules in the Arum-type arbuscular mycorrhizal symbiosis with Linum usitatissimum
No full text Experiments were conducted to investigate the "paired" arbuscules characteristic of Arum-type mycorrhizal colonization in Linum usitatissimum L. The development and senescence of arbuscular structures were followed in a time course study. Roots were freeze-sectioned longitudinally and mycorrhizal structures visualized using nitroblue tetrazolium, a vital stain to indicate metabolically active arbuscules and intercellular hyphae, followed by acid fuchsin counterstaining. Arbuscules were imaged using laser scanning confocal microscopy. The volume and surface area of each arbuscule of a developing paired structure were measured using three-dimensional imaging software. Arbuscules occurred in pairs in adjacent cortical cells arising from a single, radial intercellular hypha. These "paired" arbuscules often appeared to be at different developmental stages. Logistic regression and measurement of surface area indicated that there was a delay in initiation of the second arbuscule.Key words: Arum-type arbuscular mycorrhiza, double staining, metabolic activity, morphology, confocal microscopy, Linum usitatissimum. </jats:p
