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Article
Open AccessSeed tuber imprinting shapes the next-generation potato microbiome
Potato seed tubers are colonized and inhabited by soil-borne microbes, that can affect the performance of the emerging daughter plant in the next season. In this study, we investigated the intergenerational in...
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Article
Obligate biotroph downy mildew consistently induces near-identical protective microbiomes in Arabidopsis thaliana
Hyaloperonospora arabidopsidis (Hpa) is an obligately biotrophic downy mildew that is routinely cultured on Arabidopsis thaliana hosts that harbour complex microbiomes. We hypothesized that the culturing procedur...
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Article
Plant commensal type VII secretion system causes iron leakage from roots to promote colonization
Competition for iron is an important factor for microbial niche establishment in the rhizosphere. Pathogenic and beneficial symbiotic bacteria use various secretion systems to interact with their hosts and acq...
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Protocol
Techniques to Study Common Root Responses to Beneficial Microbes and Iron Deficiency
Iron (Fe) plays a central role in the vital processes of a plant. The Fe status of a plant influences growth and immunity, but it also dictates interactions of roots with soil microbiota through the production...
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Article
A coumarin exudation pathway mitigates arbuscular mycorrhizal incompatibility in Arabidopsis thaliana
Overexpression of genes involved in coumarin production and secretion can mitigate mycorrhizal incompatibility in nonhost Arabidopsis plants. The coumarin scopoletin, in particular, stimulates pre-penetration ...
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Article
Open AccessA family of pathogen-induced cysteine-rich transmembrane proteins is involved in plant disease resistance
Overexpression of pathogen-induced cysteine-rich transmembrane proteins (PCMs) in Arabidopsis thaliana enhances resistance against biotrophic pathogens and stimulates hypocotyl growth, suggesting a potential role...
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Article
Open AccessPseudomonas simiae WCS417: star track of a model beneficial rhizobacterium
Since the 1980s, numerous mutualistic Pseudomonas spp. strains have been used in studies on the biology of plant growth-promoting rhizobacteria (PGPR) and their interactions with host plants. In 1988, a strain fr...
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Protocol
Collection of Sterile Root Exudates from Foliar Pathogen-Inoculated Plants
In nature and agriculture, plants interact with an astonishing number of microbes, collectively referred to as the “plant microbiome.” Roots are a microbial hotspot where beneficial plant-microbe interactions ...
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Protocol
Soil-Borne Legacies of Disease in Arabidopsis thaliana
The rhizosphere microbiome of plants is essential for plant growth and health. Recent studies have shown that upon infection of leaves with a foliar pathogen, the composition of the root microbiome is altered ...
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Article
Open AccessCarbonic anhydrases CA1 and CA4 function in atmospheric CO2-modulated disease resistance
Carbonic anhydrases CA1 and CA4 attenuate plant immunity and can contribute to altered disease resistance levels in response to changing atmospheric CO2 conditions.
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Protocol
Bioassays to Evaluate the Resistance of Whole Plants to the Herbivorous Insect Thrips
Thrips are tiny, cell-content–feeding insects that are a major pest on crops and ornamentals. Besides causing direct feeding damage, thrips may also cause indirect damage by vectoring tospoviruses. Novel resis...
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Foreword
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Article
Johanna Westerdijk (1881–1961) – the impact of the grand lady of phytopathology in the Netherlands from 1917 to 2017
One century ago, on February 10, 1917, Johanna Westerdijk delivered her inaugural speech at Utrecht University entitled “New directions in phytopathological research”. By doing so, she became the very first fe...
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Article
Open AccessEffect of atmospheric CO2 on plant defense against leaf and root pathogens of Arabidopsis
Climate change and the associated increase in atmospheric CO2 levels may affect the severity of plant diseases and threaten future crop yields. Here, we compared responses of the model plant Arabidopsis thaliana ...
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Article
Open AccessMining the natural genetic variation in Arabidopsis thaliana for adaptation to sequential abiotic and biotic stresses
In this genome-wide association study, we obtained novel insights into the genetic basis of the effect of herbivory or drought stress on the level of resistance against the fungus Botrytis cinerea.
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Open AccessNatural genetic variation in Arabidopsis for responsiveness to plant growth-promoting rhizobacteria
The plant growth-promoting rhizobacterium (PGPR) Pseudomonas simiae WCS417r stimulates lateral root formation and increases shoot growth in Arabidopsis thaliana (Arabidopsis). These plant growth-stimulating effec...
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Article
Open AccessUnearthing the genomes of plant-beneficial Pseudomonas model strains WCS358, WCS374 and WCS417
Plant growth-promoting rhizobacteria (PGPR) can protect plants against pathogenic microbes through a diversity of mechanisms including competition for nutrients, production of antibiotics, and stimulation of t...
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Chapter
Induced Disease Resistance
During the co-evolutionary arms race between plants and pathogens, plants evolved a sophisticated defense system to ward off their enemies. In this plant immune system , plant receptor proteins recognize non-s...
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Protocol
Bioassays for Assessing Jasmonate-Dependent Defenses Triggered by Pathogens, Herbivorous Insects, or Beneficial Rhizobacteria
Jasmonates, together with other plant hormones, are important orchestrators of the plant immune system. The different hormone-controlled signaling pathways cross-communicate in an antagonistic or a synergistic...
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Article
Open AccessModulation of ethylene- and heat-controlled hyponastic leaf movement in Arabidopsis thaliana by the plant defence hormones jasmonate and salicylate
Upward leaf movement (hyponastic growth) is adopted by several plant species including Arabidopsis thaliana, as a mechanism to escape adverse growth conditions. Among the signals that trigger hyponastic growth ar...