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abscissic acid/arabidopsis
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Biological control of bacterial wilt in Arabidopsis thaliana involves abscissic acid signalling.
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Means to control bacterial wilt caused by the phytopathogenic root bacteria Ralstonia solanacearum are limited. Mutants in a large cluster of genes (hrp) involved in the pathogenicity of R. solanacearum were successfully used in a previous study as endophytic biocontrol agents in challenge
Abscissic acid specific expression of RAB18 involves activation of anion channels in Arabidopsis thaliana suspension cells.
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The abscissic acid (ABA) transduction cascade following the plasmalemma perception was analyzed in intact Arabidopsis thaliana suspension cells. In response to impermeant ABA, anion currents were activated and K(+) inward rectifying currents were inhibited. Anion current activation was required for
A novel leucine-rich repeat receptor-like kinase gene in potato, StLRPK1, is involved in response to diverse stresses.
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A potato gene, StLRPK1 (Solanum tuberosum L. leucine-rich-repeat receptor-like protein kinases 1), encoding a protein belonging to leucine-rich repeat receptor-like kinases (LRR-RLKs) was identified. It encodes 796 amino acids with 88% of identity to SRF3 of Arabidopsis thaliana and contains a
Heterologous expression of wheat VERNALIZATION 2 (TaVRN2) gene in Arabidopsis delays flowering and enhances freezing tolerance.
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The vernalization gene 2 (VRN2), is a major flowering repressor in temperate cereals that is regulated by low temperature and photoperiod. Here we show that the gene from Triticum aestivum (TaVRN2) is also regulated by salt, heat shock, dehydration, wounding and abscissic acid. Promoter analysis
Cytokinins negatively regulate the root iron uptake machinery in Arabidopsis through a growth-dependent pathway.
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Plants display a number of biochemical and developmental responses to low iron availability in order to increase iron uptake from the soil. The ferric-chelate reductase FRO2 and the ferrous iron transporter IRT1 control iron entry from the soil into the root epidermis. In Arabidopsis, expression of
Trichoderma spp. Improve growth of Arabidopsis seedlings under salt stress through enhanced root development, osmolite production, and Na⁺ elimination through root exudates.
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Salt stress is an important constraint to world agriculture. Here, we report on the potential of Trichoderma virens and T. atroviride to induce tolerance to salt in Arabidopsis seedlings. We first characterized the effect of several salt concentrations on shoot biomass production and root
Hydrogen peroxide is a regulator of ABI1, a protein phosphatase 2C from Arabidopsis.
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Protein phosphatases 2C (PP2Cs) exhibit diverse regulatory functions in signalling pathways of animals, yeast and plants. ABI1 is a PP2C of Arabidopsis that exerts negative control on signalling of the phytohormone abscissic acid (ABA). Characterisation of the redox sensitivity of ABI1 revealed a
Wounding-induced WRKY8 is involved in basal defense in Arabidopsis.
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The WRKY family of plant transcription factors controls several types of plant stress responses. Arabidopsis WRKY8, localized to the nucleus, is mainly induced by abscissic acid, H(2)O(2), wounding, Pseudomonas syringae and Botrytis cinerea infection, and aphid and maggot feeding. To determine its
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